🕷️ Crawler Inspector

URL Lookup

Direct Parameter Lookup

Raw Queries and Responses

1. Shard Calculation

Query:

Response:

Calculated Shard: 89 (from laksa179)

2. Crawled Status Check

Query:

curl -X POST \
  'http://laksa089.int.ahrefs:8124/' \
  -H 'Content-Type: text/plain' \
  -H 'X-ClickHouse-Database: crawler3' \
  -H 'Authorization: Basic YXBpOg==' \
  -d 'SELECT getAhrefsURLFromUnparsed(src_unparsed) AS found_url, ifNull(toUnixTimestamp(download_stamp), 0) AS crawl_time, ifNull(toUnixTimestamp(props_url_first_seen), 0) AS first_indexed_time, download_http_code AS http_code, src_unparsed AS src_unparsed, src_root_hash AS src_root_hash, history_drop_reason AS history_drop_reason, meta_title AS meta_title, meta_descriptions AS meta_descriptions, attrs_boilerpipe_text AS attrs_boilerpipe_text, attrs_markdown AS attrs_markdown, attrs_readable_markdown AS attrs_readable_markdown, meta_canonical AS meta_canonical FROM crawler3.page_info_local FINAL PREWHERE (src_root_hash, src_unparsed) IN ((getAhrefsRootHashFromUnparsed(getAhrefsUnparsedNoserviceFromURL(\'https://clickhouse.com/docs/sql-reference/aggregate-functions/reference/max\')), getAhrefsUnparsedNoserviceFromURL(\'https://clickhouse.com/docs/sql-reference/aggregate-functions/reference/max\'))) FORMAT JSONEachRow'

Response:

{"found_url":"https:\/\/clickhouse.com\/docs\/sql-reference\/aggregate-functions\/reference\/max","crawl_time":1775314006,"first_indexed_time":1740105439,"http_code":200,"src_unparsed":"com,clickhouse!\/docs\/sql-reference\/aggregate-functions\/reference\/max s443","src_root_hash":"12633450985039531489","history_drop_reason":null,"meta_title":"max | ClickHouse Docs","meta_descriptions":["Aggregate function that calculates the maximum across a group of values."],"attrs_boilerpipe_text":"max\n\nIntroduced in: v1.1.0\nAggregate function that calculates the maximum across a group of values.\nSyntax\nmax\n(\ncolumn\n)\nArguments\ncolumn\n— Column name or expression.\nAny\nReturned value\nThe maximum value across the group with type equal to that of the input.\nAny\nExamples\nSimple max example\nQuery\nCREATE\nTABLE\nemployees\n(\nname String\n,\nsalary UInt32\n)\nENGINE\n=\nMemory\n;\nINSERT\nINTO\nemployees\nVALUES\n(\n'Alice'\n,\n3000\n)\n,\n(\n'Bob'\n,\n4000\n)\n,\n(\n'Charlie'\n,\n3500\n)\n;\nSELECT\nmax\n(\nsalary\n)\nFROM\nemployees\n;\nResponse\n┌─max(salary)─┐\n│        4000 │\n└─────────────┘\nMax with GROUP BY\nQuery\nCREATE\nTABLE\nsales\n(\ndepartment String\n,\nrevenue UInt32\n)\nENGINE\n=\nMemory\n;\nINSERT\nINTO\nsales\nVALUES\n(\n'Engineering'\n,\n100000\n)\n,\n(\n'Engineering'\n,\n120000\n)\n,\n(\n'Marketing'\n,\n80000\n)\n,\n(\n'Marketing'\n,\n90000\n)\n;\nSELECT\ndepartment\n,\nmax\n(\nrevenue\n)\nFROM\nsales\nGROUP\nBY\ndepartment\nORDER\nBY\ndepartment\n;\nResponse\n┌─department──┬─max(revenue)─┐\n│ Engineering │       120000 │\n│ Marketing   │        90000 │\n└─────────────┴──────────────┘\nNote about non-aggregate maximum\nQuery\n-- If you need non-aggregate function to choose a maximum of two values, see greatest():\nSELECT\ngreatest\n(\na\n,\nb\n)\nFROM\ntable\n;\nResponse","attrs_markdown":"[Skip to main content](https:\/\/clickhouse.com\/docs\/sql-reference\/aggregate-functions\/reference\/max#__docusaurus_skipToContent_fallback)\n\n[![ClickHouse](https:\/\/clickhouse.com\/docs\/img\/ch_logo_docs.svg)](https:\/\/clickhouse.com\/)\n\n- [Products](https:\/\/clickhouse.com\/docs\/sql-reference\/aggregate-functions\/reference\/max)\n  \n  - [ClickHouse Cloud Best way to use ClickHouse. 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[Syntax](https:\/\/clickhouse.com\/docs\/sql-reference\/syntax)\n  - [Input and Output Formats](https:\/\/clickhouse.com\/docs\/sql-reference\/formats)\n  - [Data types](https:\/\/clickhouse.com\/docs\/sql-reference\/data-types)\n  - [Statements](https:\/\/clickhouse.com\/docs\/sql-reference\/statements)\n  - [Operators](https:\/\/clickhouse.com\/docs\/sql-reference\/operators)\n- [Engines](https:\/\/clickhouse.com\/docs\/engines)\n  - [Database Engines](https:\/\/clickhouse.com\/docs\/engines\/database-engines)\n  - [Table Engines](https:\/\/clickhouse.com\/docs\/engines\/table-engines)\n- [Functions](https:\/\/clickhouse.com\/docs\/sql-reference\/functions)\n  - [Regular functions](https:\/\/clickhouse.com\/docs\/sql-reference\/functions\/regular-functions)\n  - [Aggregate functions](https:\/\/clickhouse.com\/docs\/sql-reference\/aggregate-functions)\n    - [Aggregate Functions](https:\/\/clickhouse.com\/docs\/sql-reference\/aggregate-functions\/reference)\n      - [aggThrow](https:\/\/clickhouse.com\/docs\/sql-reference\/aggregate-functions\/reference\/aggthrow)\n      - [analysisOfVariance](https:\/\/clickhouse.com\/docs\/sql-reference\/aggregate-functions\/reference\/analysis_of_variance)\n      - [any](https:\/\/clickhouse.com\/docs\/sql-reference\/aggregate-functions\/reference\/any)\n      - [anyHeavy](https:\/\/clickhouse.com\/docs\/sql-reference\/aggregate-functions\/reference\/anyheavy)\n      - [anyLast](https:\/\/clickhouse.com\/docs\/sql-reference\/aggregate-functions\/reference\/anylast)\n      - [approx\\_top\\_k](https:\/\/clickhouse.com\/docs\/sql-reference\/aggregate-functions\/reference\/approxtopk)\n      - [approx\\_top\\_sum](https:\/\/clickhouse.com\/docs\/sql-reference\/aggregate-functions\/reference\/approxtopsum)\n      - [argAndMax](https:\/\/clickhouse.com\/docs\/sql-reference\/aggregate-functions\/reference\/argandmax)\n      - [argAndMin](https:\/\/clickhouse.com\/docs\/sql-reference\/aggregate-functions\/reference\/argandmin)\n      - [argMax](https:\/\/clickhouse.com\/docs\/sql-reference\/aggregate-functions\/reference\/argmax)\n      - [argMin](https:\/\/clickhouse.com\/docs\/sql-reference\/aggregate-functions\/reference\/argmin)\n      - [avg](https:\/\/clickhouse.com\/docs\/sql-reference\/aggregate-functions\/reference\/avg)\n      - [avgWeighted](https:\/\/clickhouse.com\/docs\/sql-reference\/aggregate-functions\/reference\/avgweighted)\n      - [boundingRatio](https:\/\/clickhouse.com\/docs\/sql-reference\/aggregate-functions\/reference\/boundingRatio)\n      - [categoricalInformationValue](https:\/\/clickhouse.com\/docs\/sql-reference\/aggregate-functions\/reference\/categoricalinformationvalue)\n      - [contingency](https:\/\/clickhouse.com\/docs\/sql-reference\/aggregate-functions\/reference\/contingency)\n      - [corr](https:\/\/clickhouse.com\/docs\/sql-reference\/aggregate-functions\/reference\/corr)\n      - [corrMatrix](https:\/\/clickhouse.com\/docs\/sql-reference\/aggregate-functions\/reference\/corrmatrix)\n      - [corrStable](https:\/\/clickhouse.com\/docs\/sql-reference\/aggregate-functions\/reference\/corrstable)\n      - [count](https:\/\/clickhouse.com\/docs\/sql-reference\/aggregate-functions\/reference\/count)\n      - [covarPop](https:\/\/clickhouse.com\/docs\/sql-reference\/aggregate-functions\/reference\/covarpop)\n      - [covarPopMatrix](https:\/\/clickhouse.com\/docs\/sql-reference\/aggregate-functions\/reference\/covarpopmatrix)\n      - [covarPopStable](https:\/\/clickhouse.com\/docs\/sql-reference\/aggregate-functions\/reference\/covarpopstable)\n      - [covarSamp](https:\/\/clickhouse.com\/docs\/sql-reference\/aggregate-functions\/reference\/covarsamp)\n      - [covarSampMatrix](https:\/\/clickhouse.com\/docs\/sql-reference\/aggregate-functions\/reference\/covarsampmatrix)\n      - [covarSampStable](https:\/\/clickhouse.com\/docs\/sql-reference\/aggregate-functions\/reference\/covarsampstable)\n      - [cramersV](https:\/\/clickhouse.com\/docs\/sql-reference\/aggregate-functions\/reference\/cramersv)\n      - [cramersVBiasCorrected](https:\/\/clickhouse.com\/docs\/sql-reference\/aggregate-functions\/reference\/cramersvbiascorrected)\n      - [deltaSum](https:\/\/clickhouse.com\/docs\/sql-reference\/aggregate-functions\/reference\/deltasum)\n      - [deltaSumTimestamp](https:\/\/clickhouse.com\/docs\/sql-reference\/aggregate-functions\/reference\/deltasumtimestamp)\n      - [distinctDynamicTypes](https:\/\/clickhouse.com\/docs\/sql-reference\/aggregate-functions\/reference\/distinctdynamictypes)\n      - [distinctJSONPaths](https:\/\/clickhouse.com\/docs\/sql-reference\/aggregate-functions\/reference\/distinctjsonpaths)\n      - [distinctJSONPathsAndTypes](https:\/\/clickhouse.com\/docs\/sql-reference\/aggregate-functions\/reference\/distinctJSONPathsAndTypes)\n      - [entropy](https:\/\/clickhouse.com\/docs\/sql-reference\/aggregate-functions\/reference\/entropy)\n      - [estimateCompressionRatio](https:\/\/clickhouse.com\/docs\/sql-reference\/aggregate-functions\/reference\/estimateCompressionRatio)\n      - [exponentialMovingAverage](https:\/\/clickhouse.com\/docs\/sql-reference\/aggregate-functions\/reference\/exponentialMovingAverage)\n      - [exponentialTimeDecayedAvg](https:\/\/clickhouse.com\/docs\/sql-reference\/aggregate-functions\/reference\/exponentialTimeDecayedAvg)\n      - [exponentialTimeDecayedCount](https:\/\/clickhouse.com\/docs\/sql-reference\/aggregate-functions\/reference\/exponentialTimeDecayedCount)\n      - [exponentialTimeDecayedMax](https:\/\/clickhouse.com\/docs\/sql-reference\/aggregate-functions\/reference\/exponentialTimeDecayedMax)\n      - [exponentialTimeDecayedSum](https:\/\/clickhouse.com\/docs\/sql-reference\/aggregate-functions\/reference\/exponentialTimeDecayedSum)\n      - [first\\_value](https:\/\/clickhouse.com\/docs\/sql-reference\/aggregate-functions\/reference\/first_value)\n      - [flameGraph](https:\/\/clickhouse.com\/docs\/sql-reference\/aggregate-functions\/reference\/flame_graph)\n      - [groupArray](https:\/\/clickhouse.com\/docs\/sql-reference\/aggregate-functions\/reference\/grouparray)\n      - [groupArrayArray](https:\/\/clickhouse.com\/docs\/sql-reference\/aggregate-functions\/reference\/grouparrayarray)\n      - [groupArrayInsertAt](https:\/\/clickhouse.com\/docs\/sql-reference\/aggregate-functions\/reference\/grouparrayinsertat)\n      - [groupArrayIntersect](https:\/\/clickhouse.com\/docs\/sql-reference\/aggregate-functions\/reference\/grouparrayintersect)\n      - [groupArrayLast](https:\/\/clickhouse.com\/docs\/sql-reference\/aggregate-functions\/reference\/grouparraylast)\n      - [groupArrayMovingAvg](https:\/\/clickhouse.com\/docs\/sql-reference\/aggregate-functions\/reference\/grouparraymovingavg)\n      - [groupArrayMovingSum](https:\/\/clickhouse.com\/docs\/sql-reference\/aggregate-functions\/reference\/grouparraymovingsum)\n      - [groupArraySample](https:\/\/clickhouse.com\/docs\/sql-reference\/aggregate-functions\/reference\/grouparraysample)\n      - [groupArraySorted](https:\/\/clickhouse.com\/docs\/sql-reference\/aggregate-functions\/reference\/grouparraysorted)\n      - [groupBitAnd](https:\/\/clickhouse.com\/docs\/sql-reference\/aggregate-functions\/reference\/groupbitand)\n      - [groupBitOr](https:\/\/clickhouse.com\/docs\/sql-reference\/aggregate-functions\/reference\/groupbitor)\n      - [groupBitXor](https:\/\/clickhouse.com\/docs\/sql-reference\/aggregate-functions\/reference\/groupbitxor)\n      - [groupBitmap](https:\/\/clickhouse.com\/docs\/sql-reference\/aggregate-functions\/reference\/groupbitmap)\n      - [groupBitmapAnd](https:\/\/clickhouse.com\/docs\/sql-reference\/aggregate-functions\/reference\/groupbitmapand)\n      - [groupBitmapOr](https:\/\/clickhouse.com\/docs\/sql-reference\/aggregate-functions\/reference\/groupbitmapor)\n      - [groupBitmapXor](https:\/\/clickhouse.com\/docs\/sql-reference\/aggregate-functions\/reference\/groupbitmapxor)\n      - [groupConcat](https:\/\/clickhouse.com\/docs\/sql-reference\/aggregate-functions\/reference\/groupconcat)\n      - [groupUniqArray](https:\/\/clickhouse.com\/docs\/sql-reference\/aggregate-functions\/reference\/groupuniqarray)\n      - [intervalLengthSum](https:\/\/clickhouse.com\/docs\/sql-reference\/aggregate-functions\/reference\/intervalLengthSum)\n      - [kolmogorovSmirnovTest](https:\/\/clickhouse.com\/docs\/sql-reference\/aggregate-functions\/reference\/kolmogorovsmirnovtest)\n      - [kurtPop](https:\/\/clickhouse.com\/docs\/sql-reference\/aggregate-functions\/reference\/kurtpop)\n      - [kurtSamp](https:\/\/clickhouse.com\/docs\/sql-reference\/aggregate-functions\/reference\/kurtsamp)\n      - [largestTriangleThreeBuckets](https:\/\/clickhouse.com\/docs\/sql-reference\/aggregate-functions\/reference\/largestTriangleThreeBuckets)\n      - [last\\_value](https:\/\/clickhouse.com\/docs\/sql-reference\/aggregate-functions\/reference\/last_value)\n      - [mannWhitneyUTest](https:\/\/clickhouse.com\/docs\/sql-reference\/aggregate-functions\/reference\/mannwhitneyutest)\n      - [max](https:\/\/clickhouse.com\/docs\/sql-reference\/aggregate-functions\/reference\/max)\n      - [maxIntersections](https:\/\/clickhouse.com\/docs\/sql-reference\/aggregate-functions\/reference\/maxintersections)\n      - [maxIntersectionsPosition](https:\/\/clickhouse.com\/docs\/sql-reference\/aggregate-functions\/reference\/maxintersectionsposition)\n      - [maxMap](https:\/\/clickhouse.com\/docs\/sql-reference\/aggregate-functions\/reference\/maxmap)\n      - [meanZTest](https:\/\/clickhouse.com\/docs\/sql-reference\/aggregate-functions\/reference\/meanztest)\n      - [median](https:\/\/clickhouse.com\/docs\/sql-reference\/aggregate-functions\/reference\/median)\n      - [min](https:\/\/clickhouse.com\/docs\/sql-reference\/aggregate-functions\/reference\/min)\n      - [minMap](https:\/\/clickhouse.com\/docs\/sql-reference\/aggregate-functions\/reference\/minmap)\n      - [quantile](https:\/\/clickhouse.com\/docs\/sql-reference\/aggregate-functions\/reference\/quantile)\n      - [quantileBFloat16](https:\/\/clickhouse.com\/docs\/sql-reference\/aggregate-functions\/reference\/quantilebfloat16)\n      - [quantileDD](https:\/\/clickhouse.com\/docs\/sql-reference\/aggregate-functions\/reference\/quantileddsketch)\n      - [quantileDeterministic](https:\/\/clickhouse.com\/docs\/sql-reference\/aggregate-functions\/reference\/quantiledeterministic)\n      - [quantileExact Functions](https:\/\/clickhouse.com\/docs\/sql-reference\/aggregate-functions\/reference\/quantileexact)\n      - [quantileExactExclusive](https:\/\/clickhouse.com\/docs\/sql-reference\/aggregate-functions\/reference\/quantileExactExclusive)\n      - [quantileExactHigh](https:\/\/clickhouse.com\/docs\/sql-reference\/aggregate-functions\/reference\/quantileExactHigh)\n      - [quantileExactInclusive](https:\/\/clickhouse.com\/docs\/sql-reference\/aggregate-functions\/reference\/quantileExactInclusive)\n      - [quantileExactLow](https:\/\/clickhouse.com\/docs\/sql-reference\/aggregate-functions\/reference\/quantileExactLow)\n      - [quantileExactWeighted](https:\/\/clickhouse.com\/docs\/sql-reference\/aggregate-functions\/reference\/quantileexactweighted)\n      - [quantileExactWeightedInterpolated](https:\/\/clickhouse.com\/docs\/sql-reference\/aggregate-functions\/reference\/quantileExactWeightedInterpolated)\n      - [quantileGK](https:\/\/clickhouse.com\/docs\/sql-reference\/aggregate-functions\/reference\/quantileGK)\n      - [quantileInterpolatedWeighted](https:\/\/clickhouse.com\/docs\/sql-reference\/aggregate-functions\/reference\/quantileInterpolatedWeighted)\n      - [quantilePrometheusHistogram](https:\/\/clickhouse.com\/docs\/sql-reference\/aggregate-functions\/reference\/quantilePrometheusHistogram)\n      - [quantileTDigest](https:\/\/clickhouse.com\/docs\/sql-reference\/aggregate-functions\/reference\/quantiletdigest)\n      - [quantileTDigestWeighted](https:\/\/clickhouse.com\/docs\/sql-reference\/aggregate-functions\/reference\/quantiletdigestweighted)\n      - [quantileTiming](https:\/\/clickhouse.com\/docs\/sql-reference\/aggregate-functions\/reference\/quantiletiming)\n      - [quantileTimingWeighted](https:\/\/clickhouse.com\/docs\/sql-reference\/aggregate-functions\/reference\/quantiletimingweighted)\n      - [quantiles Functions](https:\/\/clickhouse.com\/docs\/sql-reference\/aggregate-functions\/reference\/quantiles)\n      - [quantilesExactExclusive](https:\/\/clickhouse.com\/docs\/sql-reference\/aggregate-functions\/reference\/quantilesExactExclusive)\n      - [quantilesExactInclusive](https:\/\/clickhouse.com\/docs\/sql-reference\/aggregate-functions\/reference\/quantilesExactInclusive)\n      - [quantilesGK](https:\/\/clickhouse.com\/docs\/sql-reference\/aggregate-functions\/reference\/quantilesGK)\n      - [quantilesTimingWeighted](https:\/\/clickhouse.com\/docs\/sql-reference\/aggregate-functions\/reference\/quantilestimingweighted)\n      - [rankCorr](https:\/\/clickhouse.com\/docs\/sql-reference\/aggregate-functions\/reference\/rankCorr)\n      - [simpleLinearRegression](https:\/\/clickhouse.com\/docs\/sql-reference\/aggregate-functions\/reference\/simplelinearregression)\n      - [singleValueOrNull](https:\/\/clickhouse.com\/docs\/sql-reference\/aggregate-functions\/reference\/singlevalueornull)\n      - [skewPop](https:\/\/clickhouse.com\/docs\/sql-reference\/aggregate-functions\/reference\/skewpop)\n      - [skewSamp](https:\/\/clickhouse.com\/docs\/sql-reference\/aggregate-functions\/reference\/skewsamp)\n      - [sparkbar](https:\/\/clickhouse.com\/docs\/sql-reference\/aggregate-functions\/reference\/sparkbar)\n      - [stddevPop](https:\/\/clickhouse.com\/docs\/sql-reference\/aggregate-functions\/reference\/stddevpop)\n      - [stddevPopStable](https:\/\/clickhouse.com\/docs\/sql-reference\/aggregate-functions\/reference\/stddevpopstable)\n      - [stddevSamp](https:\/\/clickhouse.com\/docs\/sql-reference\/aggregate-functions\/reference\/stddevsamp)\n      - [stddevSampStable](https:\/\/clickhouse.com\/docs\/sql-reference\/aggregate-functions\/reference\/stddevsampstable)\n      - [stochasticLinearRegression](https:\/\/clickhouse.com\/docs\/sql-reference\/aggregate-functions\/reference\/stochasticlinearregression)\n      - [stochasticLogisticRegression](https:\/\/clickhouse.com\/docs\/sql-reference\/aggregate-functions\/reference\/stochasticlogisticregression)\n      - [studentTTest](https:\/\/clickhouse.com\/docs\/sql-reference\/aggregate-functions\/reference\/studentttest)\n      - [studentTTestOneSample](https:\/\/clickhouse.com\/docs\/sql-reference\/aggregate-functions\/reference\/studentttestonesample)\n      - [sum](https:\/\/clickhouse.com\/docs\/sql-reference\/aggregate-functions\/reference\/sum)\n      - [sumCount](https:\/\/clickhouse.com\/docs\/sql-reference\/aggregate-functions\/reference\/sumcount)\n      - [sumKahan](https:\/\/clickhouse.com\/docs\/sql-reference\/aggregate-functions\/reference\/sumkahan)\n      - [sumMapWithOverflow](https:\/\/clickhouse.com\/docs\/sql-reference\/aggregate-functions\/reference\/summapwithoverflow)\n      - [sumMap](https:\/\/clickhouse.com\/docs\/sql-reference\/aggregate-functions\/reference\/summap)\n      - [sumWithOverflow](https:\/\/clickhouse.com\/docs\/sql-reference\/aggregate-functions\/reference\/sumwithoverflow)\n      - [theilsU](https:\/\/clickhouse.com\/docs\/sql-reference\/aggregate-functions\/reference\/theilsu)\n      - [timeSeriesChangesToGrid](https:\/\/clickhouse.com\/docs\/sql-reference\/aggregate-functions\/reference\/timeSeriesChangesToGrid)\n      - [timeSeriesDeltaToGrid](https:\/\/clickhouse.com\/docs\/sql-reference\/aggregate-functions\/reference\/timeSeriesDeltaToGrid)\n      - [timeSeriesDerivToGrid](https:\/\/clickhouse.com\/docs\/sql-reference\/aggregate-functions\/reference\/timeSeriesDerivToGrid)\n      - [timeSeriesGroupArray](https:\/\/clickhouse.com\/docs\/sql-reference\/aggregate-functions\/reference\/timeSeriesGroupArray)\n      - [timeSeriesInstantDeltaToGrid](https:\/\/clickhouse.com\/docs\/sql-reference\/aggregate-functions\/reference\/timeSeriesInstantDeltaToGrid)\n      - [timeSeriesInstantRateToGrid](https:\/\/clickhouse.com\/docs\/sql-reference\/aggregate-functions\/reference\/timeSeriesInstantRateToGrid)\n      - [timeSeriesLastTwoSamples](https:\/\/clickhouse.com\/docs\/sql-reference\/aggregate-functions\/reference\/timeSeriesLastTwoSamples)\n      - [timeSeriesPredictLinearToGrid](https:\/\/clickhouse.com\/docs\/sql-reference\/aggregate-functions\/reference\/timeSeriesPredictLinearToGrid)\n      - [timeSeriesRateToGrid](https:\/\/clickhouse.com\/docs\/sql-reference\/aggregate-functions\/reference\/timeSeriesRateToGrid)\n      - [timeSeriesResampleToGridWithStaleness](https:\/\/clickhouse.com\/docs\/sql-reference\/aggregate-functions\/reference\/timeSeriesResampleToGridWithStaleness)\n      - [timeSeriesResetsToGrid](https:\/\/clickhouse.com\/docs\/sql-reference\/aggregate-functions\/reference\/timeSeriesResetsToGrid)\n      - [topK](https:\/\/clickhouse.com\/docs\/sql-reference\/aggregate-functions\/reference\/topk)\n      - [topKWeighted](https:\/\/clickhouse.com\/docs\/sql-reference\/aggregate-functions\/reference\/topkweighted)\n      - [uniq](https:\/\/clickhouse.com\/docs\/sql-reference\/aggregate-functions\/reference\/uniq)\n      - [uniqCombined](https:\/\/clickhouse.com\/docs\/sql-reference\/aggregate-functions\/reference\/uniqcombined)\n      - [uniqCombined64](https:\/\/clickhouse.com\/docs\/sql-reference\/aggregate-functions\/reference\/uniqcombined64)\n      - [uniqExact](https:\/\/clickhouse.com\/docs\/sql-reference\/aggregate-functions\/reference\/uniqexact)\n      - [uniqHLL12](https:\/\/clickhouse.com\/docs\/sql-reference\/aggregate-functions\/reference\/uniqhll12)\n      - [uniqTheta](https:\/\/clickhouse.com\/docs\/sql-reference\/aggregate-functions\/reference\/uniqthetasketch)\n      - [varPop](https:\/\/clickhouse.com\/docs\/sql-reference\/aggregate-functions\/reference\/varPop)\n      - [varPopStable](https:\/\/clickhouse.com\/docs\/sql-reference\/aggregate-functions\/reference\/varpopstable)\n      - [varSamp](https:\/\/clickhouse.com\/docs\/sql-reference\/aggregate-functions\/reference\/varSamp)\n      - [varSampStable](https:\/\/clickhouse.com\/docs\/sql-reference\/aggregate-functions\/reference\/varsampstable)\n      - [welchTTest](https:\/\/clickhouse.com\/docs\/sql-reference\/aggregate-functions\/reference\/welchttest)\n    - [Combinators](https:\/\/clickhouse.com\/docs\/sql-reference\/aggregate-functions\/combinators)\n    - [Parametric](https:\/\/clickhouse.com\/docs\/sql-reference\/aggregate-functions\/parametric-functions)\n    - [GROUPING](https:\/\/clickhouse.com\/docs\/sql-reference\/aggregate-functions\/grouping_function)\n    - [Combinator examples](https:\/\/clickhouse.com\/docs\/sql-reference\/aggregate-functions\/reference\/max)\n  - [Table functions](https:\/\/clickhouse.com\/docs\/sql-reference\/table-functions)\n  - [Window functions](https:\/\/clickhouse.com\/docs\/sql-reference\/window-functions)\n- [Formats](https:\/\/clickhouse.com\/docs\/interfaces\/formats)\n- [Data Lakes](https:\/\/clickhouse.com\/docs\/sql-reference\/datalakes)\n\n- [Functions](https:\/\/clickhouse.com\/docs\/sql-reference\/functions)\n- [Aggregate functions](https:\/\/clickhouse.com\/docs\/sql-reference\/aggregate-functions)\n- [Aggregate Functions](https:\/\/clickhouse.com\/docs\/sql-reference\/aggregate-functions\/reference)\n- max\n\n[Edit this page](https:\/\/github.com\/ClickHouse\/ClickHouse\/tree\/master\/docs\/en\/sql-reference\/aggregate-functions\/reference\/max.md)\n\n# max\n## max[](https:\/\/clickhouse.com\/docs\/sql-reference\/aggregate-functions\/reference\/max#max \"Direct link to max\")\nIntroduced in: v1.1.0\n\nAggregate function that calculates the maximum across a group of values.\n\n**Syntax**\n```\nmax(column)\n```\n**Arguments**\n\n- `column` — Column name or expression. [`Any`](https:\/\/clickhouse.com\/docs\/sql-reference\/data-types)\n\n**Returned value**\n\nThe maximum value across the group with type equal to that of the input. [`Any`](https:\/\/clickhouse.com\/docs\/sql-reference\/data-types)\n\n**Examples**\n\n**Simple max example**\n\nQuery\n```\nCREATE TABLE employees (name String, salary UInt32) ENGINE = Memory;\nINSERT INTO employees VALUES ('Alice', 3000), ('Bob', 4000), ('Charlie', 3500);\n\nSELECT max(salary) FROM employees;\n```\n\nResponse\n```\n┌─max(salary)─┐\n│        4000 │\n└─────────────┘\n```\n\n**Max with GROUP BY**\n\nQuery\n```\nCREATE TABLE sales (department String, revenue UInt32) ENGINE = Memory;\nINSERT INTO sales VALUES ('Engineering', 100000), ('Engineering', 120000), ('Marketing', 80000), ('Marketing', 90000);\n\nSELECT department, max(revenue) FROM sales GROUP BY department ORDER BY department;\n```\n\nResponse\n```\n┌─department──┬─max(revenue)─┐\n│ Engineering │       120000 │\n│ Marketing   │        90000 │\n└─────────────┴──────────────┘\n```\n\n**Note about non-aggregate maximum**\n\nQuery\n```\n-- If you need non-aggregate function to choose a maximum of two values, see greatest():\nSELECT greatest(a, b) FROM table;\n```\n\nResponse\n```\n\n```\n\n[Previous mannWhitneyUTest](https:\/\/clickhouse.com\/docs\/sql-reference\/aggregate-functions\/reference\/mannwhitneyutest)\n\n[Next maxIntersections](https:\/\/clickhouse.com\/docs\/sql-reference\/aggregate-functions\/reference\/maxintersections)\n\n- [max](https:\/\/clickhouse.com\/docs\/sql-reference\/aggregate-functions\/reference\/max#max)\n\nWas this page helpful?\n\n###### Try ClickHouse Cloud for FREE\nSeparation of storage and compute, automatic scaling, built-in SQL console, and lots more. \\$300 in free credits when signing up.\n\n[Try it for Free](https:\/\/console.clickhouse.cloud\/signUp?loc=doc-card-banner&glxid=e11da10b-7316-4529-b55e-c6a99b25f7e2&pagePath=%2Fdocs%2Fsql-reference%2Faggregate-functions%2Freference%2Fmax&origPath=%2Fdocs%2Fsql-reference%2Faggregate-functions%2Freference%2Fmax&utm_ga=GA1.1.354384807.1775314009)\n\n© 2016–2026 ClickHouse, Inc.\n\n[Trademark](https:\/\/clickhouse.com\/legal\/trademark-policy)·[Privacy](https:\/\/clickhouse.com\/legal\/privacy-policy)·[Security](https:\/\/trust.clickhouse.com\/)·[Terms of Service](https:\/\/clickhouse.com\/legal\/agreements\/terms-of-service)\n\n![](https:\/\/static.scarf.sh\/a.png?x-pxid=e6377503-591b-4886-9398-e69c7fee0b91)\n\n© 2016–2026 ClickHouse, Inc.\n\n[Trademark](https:\/\/clickhouse.com\/legal\/trademark-policy)·[Privacy](https:\/\/clickhouse.com\/legal\/privacy-policy)·[Security](https:\/\/trust.clickhouse.com\/)·[Terms of Service](https:\/\/clickhouse.com\/legal\/agreements\/terms-of-service)\n\n![](https:\/\/static.scarf.sh\/a.png?x-pxid=e6377503-591b-4886-9398-e69c7fee0b91)\n\n[![ClickHouse](https:\/\/clickhouse.com\/docs\/img\/ch_logo_docs.svg)](https:\/\/clickhouse.com\/)\n\nEN\n\n- Get started▼\n- Cloud▼\n- Manage data▼\n- Server admin▼\n- Reference▼\n- Integrations▼\n- ClickStack▼\n- chDB▼\n- About▼\n\n[![ClickHouse](https:\/\/clickhouse.com\/docs\/img\/ch_logo_docs.svg)](https:\/\/clickhouse.com\/)\n\nEN\n\nmain-menu\n\n- Introduction▼\n  - [Syntax](https:\/\/clickhouse.com\/docs\/sql-reference\/syntax)\n  - [Input and Output Formats](https:\/\/clickhouse.com\/docs\/sql-reference\/formats)\n  - Data types▼\n  - Statements▼\n  - Operators▼\n- Engines▼\n- Functions▼\n  - Regular functions▼\n  - Aggregate functions▼\n    - Aggregate Functions▼\n      - [aggThrow](https:\/\/clickhouse.com\/docs\/sql-reference\/aggregate-functions\/reference\/aggthrow)\n      - [analysisOfVariance](https:\/\/clickhouse.com\/docs\/sql-reference\/aggregate-functions\/reference\/analysis_of_variance)\n      - [any](https:\/\/clickhouse.com\/docs\/sql-reference\/aggregate-functions\/reference\/any)\n      - [anyHeavy](https:\/\/clickhouse.com\/docs\/sql-reference\/aggregate-functions\/reference\/anyheavy)\n      - [anyLast](https:\/\/clickhouse.com\/docs\/sql-reference\/aggregate-functions\/reference\/anylast)\n      - [approx\\_top\\_k](https:\/\/clickhouse.com\/docs\/sql-reference\/aggregate-functions\/reference\/approxtopk)\n      - [approx\\_top\\_sum](https:\/\/clickhouse.com\/docs\/sql-reference\/aggregate-functions\/reference\/approxtopsum)\n      - [argAndMax](https:\/\/clickhouse.com\/docs\/sql-reference\/aggregate-functions\/reference\/argandmax)\n      - [argAndMin](https:\/\/clickhouse.com\/docs\/sql-reference\/aggregate-functions\/reference\/argandmin)\n      - [argMax](https:\/\/clickhouse.com\/docs\/sql-reference\/aggregate-functions\/reference\/argmax)\n      - [argMin](https:\/\/clickhouse.com\/docs\/sql-reference\/aggregate-functions\/reference\/argmin)\n      - [avg](https:\/\/clickhouse.com\/docs\/sql-reference\/aggregate-functions\/reference\/avg)\n      - [avgWeighted](https:\/\/clickhouse.com\/docs\/sql-reference\/aggregate-functions\/reference\/avgweighted)\n      - [boundingRatio](https:\/\/clickhouse.com\/docs\/sql-reference\/aggregate-functions\/reference\/boundingRatio)\n      - [categoricalInformationValue](https:\/\/clickhouse.com\/docs\/sql-reference\/aggregate-functions\/reference\/categoricalinformationvalue)\n      - [contingency](https:\/\/clickhouse.com\/docs\/sql-reference\/aggregate-functions\/reference\/contingency)\n      - [corr](https:\/\/clickhouse.com\/docs\/sql-reference\/aggregate-functions\/reference\/corr)\n      - [corrMatrix](https:\/\/clickhouse.com\/docs\/sql-reference\/aggregate-functions\/reference\/corrmatrix)\n      - [corrStable](https:\/\/clickhouse.com\/docs\/sql-reference\/aggregate-functions\/reference\/corrstable)\n      - [count](https:\/\/clickhouse.com\/docs\/sql-reference\/aggregate-functions\/reference\/count)\n      - [covarPop](https:\/\/clickhouse.com\/docs\/sql-reference\/aggregate-functions\/reference\/covarpop)\n      - [covarPopMatrix](https:\/\/clickhouse.com\/docs\/sql-reference\/aggregate-functions\/reference\/covarpopmatrix)\n      - [covarPopStable](https:\/\/clickhouse.com\/docs\/sql-reference\/aggregate-functions\/reference\/covarpopstable)\n      - [covarSamp](https:\/\/clickhouse.com\/docs\/sql-reference\/aggregate-functions\/reference\/covarsamp)\n      - [covarSampMatrix](https:\/\/clickhouse.com\/docs\/sql-reference\/aggregate-functions\/reference\/covarsampmatrix)\n      - [covarSampStable](https:\/\/clickhouse.com\/docs\/sql-reference\/aggregate-functions\/reference\/covarsampstable)\n      - [cramersV](https:\/\/clickhouse.com\/docs\/sql-reference\/aggregate-functions\/reference\/cramersv)\n      - [cramersVBiasCorrected](https:\/\/clickhouse.com\/docs\/sql-reference\/aggregate-functions\/reference\/cramersvbiascorrected)\n      - [deltaSum](https:\/\/clickhouse.com\/docs\/sql-reference\/aggregate-functions\/reference\/deltasum)\n      - [deltaSumTimestamp](https:\/\/clickhouse.com\/docs\/sql-reference\/aggregate-functions\/reference\/deltasumtimestamp)\n      - [distinctDynamicTypes](https:\/\/clickhouse.com\/docs\/sql-reference\/aggregate-functions\/reference\/distinctdynamictypes)\n      - [distinctJSONPaths](https:\/\/clickhouse.com\/docs\/sql-reference\/aggregate-functions\/reference\/distinctjsonpaths)\n      - [distinctJSONPathsAndTypes](https:\/\/clickhouse.com\/docs\/sql-reference\/aggregate-functions\/reference\/distinctJSONPathsAndTypes)\n      - [entropy](https:\/\/clickhouse.com\/docs\/sql-reference\/aggregate-functions\/reference\/entropy)\n      - [estimateCompressionRatio](https:\/\/clickhouse.com\/docs\/sql-reference\/aggregate-functions\/reference\/estimateCompressionRatio)\n      - [exponentialMovingAverage](https:\/\/clickhouse.com\/docs\/sql-reference\/aggregate-functions\/reference\/exponentialMovingAverage)\n      - [exponentialTimeDecayedAvg](https:\/\/clickhouse.com\/docs\/sql-reference\/aggregate-functions\/reference\/exponentialTimeDecayedAvg)\n      - [exponentialTimeDecayedCount](https:\/\/clickhouse.com\/docs\/sql-reference\/aggregate-functions\/reference\/exponentialTimeDecayedCount)\n      - [exponentialTimeDecayedMax](https:\/\/clickhouse.com\/docs\/sql-reference\/aggregate-functions\/reference\/exponentialTimeDecayedMax)\n      - [exponentialTimeDecayedSum](https:\/\/clickhouse.com\/docs\/sql-reference\/aggregate-functions\/reference\/exponentialTimeDecayedSum)\n      - [first\\_value](https:\/\/clickhouse.com\/docs\/sql-reference\/aggregate-functions\/reference\/first_value)\n      - [flameGraph](https:\/\/clickhouse.com\/docs\/sql-reference\/aggregate-functions\/reference\/flame_graph)\n      - [groupArray](https:\/\/clickhouse.com\/docs\/sql-reference\/aggregate-functions\/reference\/grouparray)\n      - [groupArrayArray](https:\/\/clickhouse.com\/docs\/sql-reference\/aggregate-functions\/reference\/grouparrayarray)\n      - [groupArrayInsertAt](https:\/\/clickhouse.com\/docs\/sql-reference\/aggregate-functions\/reference\/grouparrayinsertat)\n      - [groupArrayIntersect](https:\/\/clickhouse.com\/docs\/sql-reference\/aggregate-functions\/reference\/grouparrayintersect)\n      - [groupArrayLast](https:\/\/clickhouse.com\/docs\/sql-reference\/aggregate-functions\/reference\/grouparraylast)\n      - [groupArrayMovingAvg](https:\/\/clickhouse.com\/docs\/sql-reference\/aggregate-functions\/reference\/grouparraymovingavg)\n      - [groupArrayMovingSum](https:\/\/clickhouse.com\/docs\/sql-reference\/aggregate-functions\/reference\/grouparraymovingsum)\n      - [groupArraySample](https:\/\/clickhouse.com\/docs\/sql-reference\/aggregate-functions\/reference\/grouparraysample)\n      - [groupArraySorted](https:\/\/clickhouse.com\/docs\/sql-reference\/aggregate-functions\/reference\/grouparraysorted)\n      - [groupBitAnd](https:\/\/clickhouse.com\/docs\/sql-reference\/aggregate-functions\/reference\/groupbitand)\n      - [groupBitOr](https:\/\/clickhouse.com\/docs\/sql-reference\/aggregate-functions\/reference\/groupbitor)\n      - [groupBitXor](https:\/\/clickhouse.com\/docs\/sql-reference\/aggregate-functions\/reference\/groupbitxor)\n      - [groupBitmap](https:\/\/clickhouse.com\/docs\/sql-reference\/aggregate-functions\/reference\/groupbitmap)\n      - [groupBitmapAnd](https:\/\/clickhouse.com\/docs\/sql-reference\/aggregate-functions\/reference\/groupbitmapand)\n      - [groupBitmapOr](https:\/\/clickhouse.com\/docs\/sql-reference\/aggregate-functions\/reference\/groupbitmapor)\n      - [groupBitmapXor](https:\/\/clickhouse.com\/docs\/sql-reference\/aggregate-functions\/reference\/groupbitmapxor)\n      - [groupConcat](https:\/\/clickhouse.com\/docs\/sql-reference\/aggregate-functions\/reference\/groupconcat)\n      - [groupUniqArray](https:\/\/clickhouse.com\/docs\/sql-reference\/aggregate-functions\/reference\/groupuniqarray)\n      - [intervalLengthSum](https:\/\/clickhouse.com\/docs\/sql-reference\/aggregate-functions\/reference\/intervalLengthSum)\n      - [kolmogorovSmirnovTest](https:\/\/clickhouse.com\/docs\/sql-reference\/aggregate-functions\/reference\/kolmogorovsmirnovtest)\n      - [kurtPop](https:\/\/clickhouse.com\/docs\/sql-reference\/aggregate-functions\/reference\/kurtpop)\n      - [kurtSamp](https:\/\/clickhouse.com\/docs\/sql-reference\/aggregate-functions\/reference\/kurtsamp)\n      - [largestTriangleThreeBuckets](https:\/\/clickhouse.com\/docs\/sql-reference\/aggregate-functions\/reference\/largestTriangleThreeBuckets)\n      - [last\\_value](https:\/\/clickhouse.com\/docs\/sql-reference\/aggregate-functions\/reference\/last_value)\n      - [mannWhitneyUTest](https:\/\/clickhouse.com\/docs\/sql-reference\/aggregate-functions\/reference\/mannwhitneyutest)\n      - [max](https:\/\/clickhouse.com\/docs\/sql-reference\/aggregate-functions\/reference\/max)\n      - [maxIntersections](https:\/\/clickhouse.com\/docs\/sql-reference\/aggregate-functions\/reference\/maxintersections)\n      - [maxIntersectionsPosition](https:\/\/clickhouse.com\/docs\/sql-reference\/aggregate-functions\/reference\/maxintersectionsposition)\n      - [maxMap](https:\/\/clickhouse.com\/docs\/sql-reference\/aggregate-functions\/reference\/maxmap)\n      - [meanZTest](https:\/\/clickhouse.com\/docs\/sql-reference\/aggregate-functions\/reference\/meanztest)\n      - [median](https:\/\/clickhouse.com\/docs\/sql-reference\/aggregate-functions\/reference\/median)\n      - [min](https:\/\/clickhouse.com\/docs\/sql-reference\/aggregate-functions\/reference\/min)\n      - [minMap](https:\/\/clickhouse.com\/docs\/sql-reference\/aggregate-functions\/reference\/minmap)\n      - [quantile](https:\/\/clickhouse.com\/docs\/sql-reference\/aggregate-functions\/reference\/quantile)\n      - [quantileBFloat16](https:\/\/clickhouse.com\/docs\/sql-reference\/aggregate-functions\/reference\/quantilebfloat16)\n      - [quantileDD](https:\/\/clickhouse.com\/docs\/sql-reference\/aggregate-functions\/reference\/quantileddsketch)\n      - [quantileDeterministic](https:\/\/clickhouse.com\/docs\/sql-reference\/aggregate-functions\/reference\/quantiledeterministic)\n      - [quantileExact Functions](https:\/\/clickhouse.com\/docs\/sql-reference\/aggregate-functions\/reference\/quantileexact)\n      - [quantileExactExclusive](https:\/\/clickhouse.com\/docs\/sql-reference\/aggregate-functions\/reference\/quantileExactExclusive)\n      - [quantileExactHigh](https:\/\/clickhouse.com\/docs\/sql-reference\/aggregate-functions\/reference\/quantileExactHigh)\n      - [quantileExactInclusive](https:\/\/clickhouse.com\/docs\/sql-reference\/aggregate-functions\/reference\/quantileExactInclusive)\n      - [quantileExactLow](https:\/\/clickhouse.com\/docs\/sql-reference\/aggregate-functions\/reference\/quantileExactLow)\n      - [quantileExactWeighted](https:\/\/clickhouse.com\/docs\/sql-reference\/aggregate-functions\/reference\/quantileexactweighted)\n      - [quantileExactWeightedInterpolated](https:\/\/clickhouse.com\/docs\/sql-reference\/aggregate-functions\/reference\/quantileExactWeightedInterpolated)\n      - [quantileGK](https:\/\/clickhouse.com\/docs\/sql-reference\/aggregate-functions\/reference\/quantileGK)\n      - [quantileInterpolatedWeighted](https:\/\/clickhouse.com\/docs\/sql-reference\/aggregate-functions\/reference\/quantileInterpolatedWeighted)\n      - [quantilePrometheusHistogram](https:\/\/clickhouse.com\/docs\/sql-reference\/aggregate-functions\/reference\/quantilePrometheusHistogram)\n      - [quantileTDigest](https:\/\/clickhouse.com\/docs\/sql-reference\/aggregate-functions\/reference\/quantiletdigest)\n      - [quantileTDigestWeighted](https:\/\/clickhouse.com\/docs\/sql-reference\/aggregate-functions\/reference\/quantiletdigestweighted)\n      - [quantileTiming](https:\/\/clickhouse.com\/docs\/sql-reference\/aggregate-functions\/reference\/quantiletiming)\n      - [quantileTimingWeighted](https:\/\/clickhouse.com\/docs\/sql-reference\/aggregate-functions\/reference\/quantiletimingweighted)\n      - [quantiles Functions](https:\/\/clickhouse.com\/docs\/sql-reference\/aggregate-functions\/reference\/quantiles)\n      - [quantilesExactExclusive](https:\/\/clickhouse.com\/docs\/sql-reference\/aggregate-functions\/reference\/quantilesExactExclusive)\n      - [quantilesExactInclusive](https:\/\/clickhouse.com\/docs\/sql-reference\/aggregate-functions\/reference\/quantilesExactInclusive)\n      - [quantilesGK](https:\/\/clickhouse.com\/docs\/sql-reference\/aggregate-functions\/reference\/quantilesGK)\n      - [quantilesTimingWeighted](https:\/\/clickhouse.com\/docs\/sql-reference\/aggregate-functions\/reference\/quantilestimingweighted)\n      - [rankCorr](https:\/\/clickhouse.com\/docs\/sql-reference\/aggregate-functions\/reference\/rankCorr)\n      - [simpleLinearRegression](https:\/\/clickhouse.com\/docs\/sql-reference\/aggregate-functions\/reference\/simplelinearregression)\n      - [singleValueOrNull](https:\/\/clickhouse.com\/docs\/sql-reference\/aggregate-functions\/reference\/singlevalueornull)\n      - [skewPop](https:\/\/clickhouse.com\/docs\/sql-reference\/aggregate-functions\/reference\/skewpop)\n      - [skewSamp](https:\/\/clickhouse.com\/docs\/sql-reference\/aggregate-functions\/reference\/skewsamp)\n      - [sparkbar](https:\/\/clickhouse.com\/docs\/sql-reference\/aggregate-functions\/reference\/sparkbar)\n      - [stddevPop](https:\/\/clickhouse.com\/docs\/sql-reference\/aggregate-functions\/reference\/stddevpop)\n      - [stddevPopStable](https:\/\/clickhouse.com\/docs\/sql-reference\/aggregate-functions\/reference\/stddevpopstable)\n      - [stddevSamp](https:\/\/clickhouse.com\/docs\/sql-reference\/aggregate-functions\/reference\/stddevsamp)\n      - [stddevSampStable](https:\/\/clickhouse.com\/docs\/sql-reference\/aggregate-functions\/reference\/stddevsampstable)\n      - [stochasticLinearRegression](https:\/\/clickhouse.com\/docs\/sql-reference\/aggregate-functions\/reference\/stochasticlinearregression)\n      - [stochasticLogisticRegression](https:\/\/clickhouse.com\/docs\/sql-reference\/aggregate-functions\/reference\/stochasticlogisticregression)\n      - [studentTTest](https:\/\/clickhouse.com\/docs\/sql-reference\/aggregate-functions\/reference\/studentttest)\n      - [studentTTestOneSample](https:\/\/clickhouse.com\/docs\/sql-reference\/aggregate-functions\/reference\/studentttestonesample)\n      - [sum](https:\/\/clickhouse.com\/docs\/sql-reference\/aggregate-functions\/reference\/sum)\n      - [sumCount](https:\/\/clickhouse.com\/docs\/sql-reference\/aggregate-functions\/reference\/sumcount)\n      - [sumKahan](https:\/\/clickhouse.com\/docs\/sql-reference\/aggregate-functions\/reference\/sumkahan)\n      - [sumMapWithOverflow](https:\/\/clickhouse.com\/docs\/sql-reference\/aggregate-functions\/reference\/summapwithoverflow)\n      - [sumMap](https:\/\/clickhouse.com\/docs\/sql-reference\/aggregate-functions\/reference\/summap)\n      - [sumWithOverflow](https:\/\/clickhouse.com\/docs\/sql-reference\/aggregate-functions\/reference\/sumwithoverflow)\n      - [theilsU](https:\/\/clickhouse.com\/docs\/sql-reference\/aggregate-functions\/reference\/theilsu)\n      - [timeSeriesChangesToGrid](https:\/\/clickhouse.com\/docs\/sql-reference\/aggregate-functions\/reference\/timeSeriesChangesToGrid)\n      - [timeSeriesDeltaToGrid](https:\/\/clickhouse.com\/docs\/sql-reference\/aggregate-functions\/reference\/timeSeriesDeltaToGrid)\n      - [timeSeriesDerivToGrid](https:\/\/clickhouse.com\/docs\/sql-reference\/aggregate-functions\/reference\/timeSeriesDerivToGrid)\n      - [timeSeriesGroupArray](https:\/\/clickhouse.com\/docs\/sql-reference\/aggregate-functions\/reference\/timeSeriesGroupArray)\n      - [timeSeriesInstantDeltaToGrid](https:\/\/clickhouse.com\/docs\/sql-reference\/aggregate-functions\/reference\/timeSeriesInstantDeltaToGrid)\n      - [timeSeriesInstantRateToGrid](https:\/\/clickhouse.com\/docs\/sql-reference\/aggregate-functions\/reference\/timeSeriesInstantRateToGrid)\n      - [timeSeriesLastTwoSamples](https:\/\/clickhouse.com\/docs\/sql-reference\/aggregate-functions\/reference\/timeSeriesLastTwoSamples)\n      - [timeSeriesPredictLinearToGrid](https:\/\/clickhouse.com\/docs\/sql-reference\/aggregate-functions\/reference\/timeSeriesPredictLinearToGrid)\n      - [timeSeriesRateToGrid](https:\/\/clickhouse.com\/docs\/sql-reference\/aggregate-functions\/reference\/timeSeriesRateToGrid)\n      - [timeSeriesResampleToGridWithStaleness](https:\/\/clickhouse.com\/docs\/sql-reference\/aggregate-functions\/reference\/timeSeriesResampleToGridWithStaleness)\n      - [timeSeriesResetsToGrid](https:\/\/clickhouse.com\/docs\/sql-reference\/aggregate-functions\/reference\/timeSeriesResetsToGrid)\n      - [topK](https:\/\/clickhouse.com\/docs\/sql-reference\/aggregate-functions\/reference\/topk)\n      - [topKWeighted](https:\/\/clickhouse.com\/docs\/sql-reference\/aggregate-functions\/reference\/topkweighted)\n      - [uniq](https:\/\/clickhouse.com\/docs\/sql-reference\/aggregate-functions\/reference\/uniq)\n      - [uniqCombined](https:\/\/clickhouse.com\/docs\/sql-reference\/aggregate-functions\/reference\/uniqcombined)\n      - [uniqCombined64](https:\/\/clickhouse.com\/docs\/sql-reference\/aggregate-functions\/reference\/uniqcombined64)\n      - [uniqExact](https:\/\/clickhouse.com\/docs\/sql-reference\/aggregate-functions\/reference\/uniqexact)\n      - [uniqHLL12](https:\/\/clickhouse.com\/docs\/sql-reference\/aggregate-functions\/reference\/uniqhll12)\n      - [uniqTheta](https:\/\/clickhouse.com\/docs\/sql-reference\/aggregate-functions\/reference\/uniqthetasketch)\n      - [varPop](https:\/\/clickhouse.com\/docs\/sql-reference\/aggregate-functions\/reference\/varPop)\n      - [varPopStable](https:\/\/clickhouse.com\/docs\/sql-reference\/aggregate-functions\/reference\/varpopstable)\n      - [varSamp](https:\/\/clickhouse.com\/docs\/sql-reference\/aggregate-functions\/reference\/varSamp)\n      - [varSampStable](https:\/\/clickhouse.com\/docs\/sql-reference\/aggregate-functions\/reference\/varsampstable)\n      - [welchTTest](https:\/\/clickhouse.com\/docs\/sql-reference\/aggregate-functions\/reference\/welchttest)\n    - [Combinators](https:\/\/clickhouse.com\/docs\/sql-reference\/aggregate-functions\/combinators)\n    - [Parametric](https:\/\/clickhouse.com\/docs\/sql-reference\/aggregate-functions\/parametric-functions)\n    - [GROUPING](https:\/\/clickhouse.com\/docs\/sql-reference\/aggregate-functions\/grouping_function)\n    - Combinator examples▼\n  - Table functions▼\n  - Window functions▼\n- Formats▼\n- [Data Lakes](https:\/\/clickhouse.com\/docs\/sql-reference\/datalakes)","attrs_readable_markdown":"## max[](https:\/\/clickhouse.com\/docs\/sql-reference\/aggregate-functions\/reference\/max#max \"Direct link to max\")\nIntroduced in: v1.1.0\n\nAggregate function that calculates the maximum across a group of values.\n\n**Syntax**\n```\nmax(column)\n```\n**Arguments**\n\n- `column` — Column name or expression. [`Any`](https:\/\/clickhouse.com\/docs\/sql-reference\/data-types)\n\n**Returned value**\n\nThe maximum value across the group with type equal to that of the input. [`Any`](https:\/\/clickhouse.com\/docs\/sql-reference\/data-types)\n\n**Examples**\n\n**Simple max example**\n\nQuery\n```\nCREATE TABLE employees (name String, salary UInt32) ENGINE = Memory;\nINSERT INTO employees VALUES ('Alice', 3000), ('Bob', 4000), ('Charlie', 3500);\n\nSELECT max(salary) FROM employees;\n```\n\nResponse\n```\n┌─max(salary)─┐\n│        4000 │\n└─────────────┘\n```\n\n**Max with GROUP BY**\n\nQuery\n```\nCREATE TABLE sales (department String, revenue UInt32) ENGINE = Memory;\nINSERT INTO sales VALUES ('Engineering', 100000), ('Engineering', 120000), ('Marketing', 80000), ('Marketing', 90000);\n\nSELECT department, max(revenue) FROM sales GROUP BY department ORDER BY department;\n```\n\nResponse\n```\n┌─department──┬─max(revenue)─┐\n│ Engineering │       120000 │\n│ Marketing   │        90000 │\n└─────────────┴──────────────┘\n```\n\n**Note about non-aggregate maximum**\n\nQuery\n```\n-- If you need non-aggregate function to choose a maximum of two values, see greatest():\nSELECT greatest(a, b) FROM table;\n```\n\nResponse","meta_canonical":null}

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URL	https://clickhouse.com/docs/sql-reference/aggregate-functions/reference/max
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First Indexed	2025-02-21 02:37:19 (1 year ago)
HTTP Status Code	200
Meta Title	max \| ClickHouse Docs
Meta Description	Aggregate function that calculates the maximum across a group of values.
Meta Canonical	null
Boilerpipe Text	max Introduced in: v1.1.0 Aggregate function that calculates the maximum across a group of values. Syntax max ( column ) Arguments column — Column name or expression. Any Returned value The maximum value across the group with type equal to that of the input. Any Examples Simple max example Query CREATE TABLE employees ( name String , salary UInt32 ) ENGINE = Memory ; INSERT INTO employees VALUES ( 'Alice' , 3000 ) , ( 'Bob' , 4000 ) , ( 'Charlie' , 3500 ) ; SELECT max ( salary ) FROM employees ; Response ┌─max(salary)─┐ │ 4000 │ └─────────────┘ Max with GROUP BY Query CREATE TABLE sales ( department String , revenue UInt32 ) ENGINE = Memory ; INSERT INTO sales VALUES ( 'Engineering' , 100000 ) , ( 'Engineering' , 120000 ) , ( 'Marketing' , 80000 ) , ( 'Marketing' , 90000 ) ; SELECT department , max ( revenue ) FROM sales GROUP BY department ORDER BY department ; Response ┌─department──┬─max(revenue)─┐ │ Engineering │ 120000 │ │ Marketing │ 90000 │ └─────────────┴──────────────┘ Note about non-aggregate maximum Query -- If you need non-aggregate function to choose a maximum of two values, see greatest(): SELECT greatest ( a , b ) FROM table ; Response
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[Table Engines](https://clickhouse.com/docs/engines/table-engines) - [Functions](https://clickhouse.com/docs/sql-reference/functions) - [Regular functions](https://clickhouse.com/docs/sql-reference/functions/regular-functions) - [Aggregate functions](https://clickhouse.com/docs/sql-reference/aggregate-functions) - [Aggregate Functions](https://clickhouse.com/docs/sql-reference/aggregate-functions/reference) - [aggThrow](https://clickhouse.com/docs/sql-reference/aggregate-functions/reference/aggthrow) - [analysisOfVariance](https://clickhouse.com/docs/sql-reference/aggregate-functions/reference/analysis_of_variance) - [any](https://clickhouse.com/docs/sql-reference/aggregate-functions/reference/any) - [anyHeavy](https://clickhouse.com/docs/sql-reference/aggregate-functions/reference/anyheavy) - [anyLast](https://clickhouse.com/docs/sql-reference/aggregate-functions/reference/anylast) - [approx\_top\_k](https://clickhouse.com/docs/sql-reference/aggregate-functions/reference/approxtopk) - [approx\_top\_sum](https://clickhouse.com/docs/sql-reference/aggregate-functions/reference/approxtopsum) - [argAndMax](https://clickhouse.com/docs/sql-reference/aggregate-functions/reference/argandmax) - [argAndMin](https://clickhouse.com/docs/sql-reference/aggregate-functions/reference/argandmin) - [argMax](https://clickhouse.com/docs/sql-reference/aggregate-functions/reference/argmax) - [argMin](https://clickhouse.com/docs/sql-reference/aggregate-functions/reference/argmin) - [avg](https://clickhouse.com/docs/sql-reference/aggregate-functions/reference/avg) - [avgWeighted](https://clickhouse.com/docs/sql-reference/aggregate-functions/reference/avgweighted) - [boundingRatio](https://clickhouse.com/docs/sql-reference/aggregate-functions/reference/boundingRatio) - [categoricalInformationValue](https://clickhouse.com/docs/sql-reference/aggregate-functions/reference/categoricalinformationvalue) - [contingency](https://clickhouse.com/docs/sql-reference/aggregate-functions/reference/contingency) - [corr](https://clickhouse.com/docs/sql-reference/aggregate-functions/reference/corr) - [corrMatrix](https://clickhouse.com/docs/sql-reference/aggregate-functions/reference/corrmatrix) - [corrStable](https://clickhouse.com/docs/sql-reference/aggregate-functions/reference/corrstable) - [count](https://clickhouse.com/docs/sql-reference/aggregate-functions/reference/count) - [covarPop](https://clickhouse.com/docs/sql-reference/aggregate-functions/reference/covarpop) - [covarPopMatrix](https://clickhouse.com/docs/sql-reference/aggregate-functions/reference/covarpopmatrix) - [covarPopStable](https://clickhouse.com/docs/sql-reference/aggregate-functions/reference/covarpopstable) - [covarSamp](https://clickhouse.com/docs/sql-reference/aggregate-functions/reference/covarsamp) - [covarSampMatrix](https://clickhouse.com/docs/sql-reference/aggregate-functions/reference/covarsampmatrix) - [covarSampStable](https://clickhouse.com/docs/sql-reference/aggregate-functions/reference/covarsampstable) - [cramersV](https://clickhouse.com/docs/sql-reference/aggregate-functions/reference/cramersv) - [cramersVBiasCorrected](https://clickhouse.com/docs/sql-reference/aggregate-functions/reference/cramersvbiascorrected) - [deltaSum](https://clickhouse.com/docs/sql-reference/aggregate-functions/reference/deltasum) - [deltaSumTimestamp](https://clickhouse.com/docs/sql-reference/aggregate-functions/reference/deltasumtimestamp) - [distinctDynamicTypes](https://clickhouse.com/docs/sql-reference/aggregate-functions/reference/distinctdynamictypes) - [distinctJSONPaths](https://clickhouse.com/docs/sql-reference/aggregate-functions/reference/distinctjsonpaths) - [distinctJSONPathsAndTypes](https://clickhouse.com/docs/sql-reference/aggregate-functions/reference/distinctJSONPathsAndTypes) - [entropy](https://clickhouse.com/docs/sql-reference/aggregate-functions/reference/entropy) - [estimateCompressionRatio](https://clickhouse.com/docs/sql-reference/aggregate-functions/reference/estimateCompressionRatio) - [exponentialMovingAverage](https://clickhouse.com/docs/sql-reference/aggregate-functions/reference/exponentialMovingAverage) - [exponentialTimeDecayedAvg](https://clickhouse.com/docs/sql-reference/aggregate-functions/reference/exponentialTimeDecayedAvg) - [exponentialTimeDecayedCount](https://clickhouse.com/docs/sql-reference/aggregate-functions/reference/exponentialTimeDecayedCount) - [exponentialTimeDecayedMax](https://clickhouse.com/docs/sql-reference/aggregate-functions/reference/exponentialTimeDecayedMax) - [exponentialTimeDecayedSum](https://clickhouse.com/docs/sql-reference/aggregate-functions/reference/exponentialTimeDecayedSum) - [first\_value](https://clickhouse.com/docs/sql-reference/aggregate-functions/reference/first_value) - [flameGraph](https://clickhouse.com/docs/sql-reference/aggregate-functions/reference/flame_graph) - [groupArray](https://clickhouse.com/docs/sql-reference/aggregate-functions/reference/grouparray) - [groupArrayArray](https://clickhouse.com/docs/sql-reference/aggregate-functions/reference/grouparrayarray) - [groupArrayInsertAt](https://clickhouse.com/docs/sql-reference/aggregate-functions/reference/grouparrayinsertat) - 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[last\_value](https://clickhouse.com/docs/sql-reference/aggregate-functions/reference/last_value) - [mannWhitneyUTest](https://clickhouse.com/docs/sql-reference/aggregate-functions/reference/mannwhitneyutest) - [max](https://clickhouse.com/docs/sql-reference/aggregate-functions/reference/max) - [maxIntersections](https://clickhouse.com/docs/sql-reference/aggregate-functions/reference/maxintersections) - [maxIntersectionsPosition](https://clickhouse.com/docs/sql-reference/aggregate-functions/reference/maxintersectionsposition) - [maxMap](https://clickhouse.com/docs/sql-reference/aggregate-functions/reference/maxmap) - [meanZTest](https://clickhouse.com/docs/sql-reference/aggregate-functions/reference/meanztest) - [median](https://clickhouse.com/docs/sql-reference/aggregate-functions/reference/median) - [min](https://clickhouse.com/docs/sql-reference/aggregate-functions/reference/min) - [minMap](https://clickhouse.com/docs/sql-reference/aggregate-functions/reference/minmap) - [quantile](https://clickhouse.com/docs/sql-reference/aggregate-functions/reference/quantile) - [quantileBFloat16](https://clickhouse.com/docs/sql-reference/aggregate-functions/reference/quantilebfloat16) - [quantileDD](https://clickhouse.com/docs/sql-reference/aggregate-functions/reference/quantileddsketch) - [quantileDeterministic](https://clickhouse.com/docs/sql-reference/aggregate-functions/reference/quantiledeterministic) - [quantileExact Functions](https://clickhouse.com/docs/sql-reference/aggregate-functions/reference/quantileexact) - [quantileExactExclusive](https://clickhouse.com/docs/sql-reference/aggregate-functions/reference/quantileExactExclusive) - [quantileExactHigh](https://clickhouse.com/docs/sql-reference/aggregate-functions/reference/quantileExactHigh) - [quantileExactInclusive](https://clickhouse.com/docs/sql-reference/aggregate-functions/reference/quantileExactInclusive) - [quantileExactLow](https://clickhouse.com/docs/sql-reference/aggregate-functions/reference/quantileExactLow) - [quantileExactWeighted](https://clickhouse.com/docs/sql-reference/aggregate-functions/reference/quantileexactweighted) - [quantileExactWeightedInterpolated](https://clickhouse.com/docs/sql-reference/aggregate-functions/reference/quantileExactWeightedInterpolated) - [quantileGK](https://clickhouse.com/docs/sql-reference/aggregate-functions/reference/quantileGK) - [quantileInterpolatedWeighted](https://clickhouse.com/docs/sql-reference/aggregate-functions/reference/quantileInterpolatedWeighted) - [quantilePrometheusHistogram](https://clickhouse.com/docs/sql-reference/aggregate-functions/reference/quantilePrometheusHistogram) - [quantileTDigest](https://clickhouse.com/docs/sql-reference/aggregate-functions/reference/quantiletdigest) - [quantileTDigestWeighted](https://clickhouse.com/docs/sql-reference/aggregate-functions/reference/quantiletdigestweighted) - [quantileTiming](https://clickhouse.com/docs/sql-reference/aggregate-functions/reference/quantiletiming) - [quantileTimingWeighted](https://clickhouse.com/docs/sql-reference/aggregate-functions/reference/quantiletimingweighted) - [quantiles Functions](https://clickhouse.com/docs/sql-reference/aggregate-functions/reference/quantiles) - 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[sumKahan](https://clickhouse.com/docs/sql-reference/aggregate-functions/reference/sumkahan) - [sumMapWithOverflow](https://clickhouse.com/docs/sql-reference/aggregate-functions/reference/summapwithoverflow) - [sumMap](https://clickhouse.com/docs/sql-reference/aggregate-functions/reference/summap) - [sumWithOverflow](https://clickhouse.com/docs/sql-reference/aggregate-functions/reference/sumwithoverflow) - [theilsU](https://clickhouse.com/docs/sql-reference/aggregate-functions/reference/theilsu) - [timeSeriesChangesToGrid](https://clickhouse.com/docs/sql-reference/aggregate-functions/reference/timeSeriesChangesToGrid) - [timeSeriesDeltaToGrid](https://clickhouse.com/docs/sql-reference/aggregate-functions/reference/timeSeriesDeltaToGrid) - [timeSeriesDerivToGrid](https://clickhouse.com/docs/sql-reference/aggregate-functions/reference/timeSeriesDerivToGrid) - [timeSeriesGroupArray](https://clickhouse.com/docs/sql-reference/aggregate-functions/reference/timeSeriesGroupArray) - [timeSeriesInstantDeltaToGrid](https://clickhouse.com/docs/sql-reference/aggregate-functions/reference/timeSeriesInstantDeltaToGrid) - 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Syntax ``` max(column) ``` Arguments - `column` — Column name or expression. [`Any`](https://clickhouse.com/docs/sql-reference/data-types) Returned value The maximum value across the group with type equal to that of the input. [`Any`](https://clickhouse.com/docs/sql-reference/data-types) Examples Simple max example Query ``` CREATE TABLE employees (name String, salary UInt32) ENGINE = Memory; INSERT INTO employees VALUES ('Alice', 3000), ('Bob', 4000), ('Charlie', 3500); SELECT max(salary) FROM employees; ``` Response ``` ┌─max(salary)─┐ │ 4000 │ └─────────────┘ ``` Max with GROUP BY Query ``` CREATE TABLE sales (department String, revenue UInt32) ENGINE = Memory; INSERT INTO sales VALUES ('Engineering', 100000), ('Engineering', 120000), ('Marketing', 80000), ('Marketing', 90000); SELECT department, max(revenue) FROM sales GROUP BY department ORDER BY department; ``` Response ``` ┌─department──┬─max(revenue)─┐ │ Engineering │ 120000 │ │ Marketing │ 90000 │ └─────────────┴──────────────┘ ``` Note about non-aggregate maximum Query ``` -- If you need non-aggregate function to choose a maximum of two values, see greatest(): SELECT greatest(a, b) FROM table; ``` Response ``` ``` [Previous mannWhitneyUTest](https://clickhouse.com/docs/sql-reference/aggregate-functions/reference/mannwhitneyutest) [Next maxIntersections](https://clickhouse.com/docs/sql-reference/aggregate-functions/reference/maxintersections) - [max](https://clickhouse.com/docs/sql-reference/aggregate-functions/reference/max#max) Was this page helpful? ###### Try ClickHouse Cloud for FREE Separation of storage and compute, automatic scaling, built-in SQL console, and lots more. \$300 in free credits when signing up. 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[quantileExactHigh](https://clickhouse.com/docs/sql-reference/aggregate-functions/reference/quantileExactHigh) - [quantileExactInclusive](https://clickhouse.com/docs/sql-reference/aggregate-functions/reference/quantileExactInclusive) - [quantileExactLow](https://clickhouse.com/docs/sql-reference/aggregate-functions/reference/quantileExactLow) - [quantileExactWeighted](https://clickhouse.com/docs/sql-reference/aggregate-functions/reference/quantileexactweighted) - [quantileExactWeightedInterpolated](https://clickhouse.com/docs/sql-reference/aggregate-functions/reference/quantileExactWeightedInterpolated) - [quantileGK](https://clickhouse.com/docs/sql-reference/aggregate-functions/reference/quantileGK) - [quantileInterpolatedWeighted](https://clickhouse.com/docs/sql-reference/aggregate-functions/reference/quantileInterpolatedWeighted) - [quantilePrometheusHistogram](https://clickhouse.com/docs/sql-reference/aggregate-functions/reference/quantilePrometheusHistogram) - [quantileTDigest](https://clickhouse.com/docs/sql-reference/aggregate-functions/reference/quantiletdigest) - [quantileTDigestWeighted](https://clickhouse.com/docs/sql-reference/aggregate-functions/reference/quantiletdigestweighted) - [quantileTiming](https://clickhouse.com/docs/sql-reference/aggregate-functions/reference/quantiletiming) - [quantileTimingWeighted](https://clickhouse.com/docs/sql-reference/aggregate-functions/reference/quantiletimingweighted) - [quantiles Functions](https://clickhouse.com/docs/sql-reference/aggregate-functions/reference/quantiles) - [quantilesExactExclusive](https://clickhouse.com/docs/sql-reference/aggregate-functions/reference/quantilesExactExclusive) - [quantilesExactInclusive](https://clickhouse.com/docs/sql-reference/aggregate-functions/reference/quantilesExactInclusive) - [quantilesGK](https://clickhouse.com/docs/sql-reference/aggregate-functions/reference/quantilesGK) - [quantilesTimingWeighted](https://clickhouse.com/docs/sql-reference/aggregate-functions/reference/quantilestimingweighted) - [rankCorr](https://clickhouse.com/docs/sql-reference/aggregate-functions/reference/rankCorr) - [simpleLinearRegression](https://clickhouse.com/docs/sql-reference/aggregate-functions/reference/simplelinearregression) - [singleValueOrNull](https://clickhouse.com/docs/sql-reference/aggregate-functions/reference/singlevalueornull) - [skewPop](https://clickhouse.com/docs/sql-reference/aggregate-functions/reference/skewpop) - [skewSamp](https://clickhouse.com/docs/sql-reference/aggregate-functions/reference/skewsamp) - [sparkbar](https://clickhouse.com/docs/sql-reference/aggregate-functions/reference/sparkbar) - [stddevPop](https://clickhouse.com/docs/sql-reference/aggregate-functions/reference/stddevpop) - [stddevPopStable](https://clickhouse.com/docs/sql-reference/aggregate-functions/reference/stddevpopstable) - [stddevSamp](https://clickhouse.com/docs/sql-reference/aggregate-functions/reference/stddevsamp) - [stddevSampStable](https://clickhouse.com/docs/sql-reference/aggregate-functions/reference/stddevsampstable) - [stochasticLinearRegression](https://clickhouse.com/docs/sql-reference/aggregate-functions/reference/stochasticlinearregression) - [stochasticLogisticRegression](https://clickhouse.com/docs/sql-reference/aggregate-functions/reference/stochasticlogisticregression) - [studentTTest](https://clickhouse.com/docs/sql-reference/aggregate-functions/reference/studentttest) - [studentTTestOneSample](https://clickhouse.com/docs/sql-reference/aggregate-functions/reference/studentttestonesample) - [sum](https://clickhouse.com/docs/sql-reference/aggregate-functions/reference/sum) - [sumCount](https://clickhouse.com/docs/sql-reference/aggregate-functions/reference/sumcount) - [sumKahan](https://clickhouse.com/docs/sql-reference/aggregate-functions/reference/sumkahan) - [sumMapWithOverflow](https://clickhouse.com/docs/sql-reference/aggregate-functions/reference/summapwithoverflow) - [sumMap](https://clickhouse.com/docs/sql-reference/aggregate-functions/reference/summap) - [sumWithOverflow](https://clickhouse.com/docs/sql-reference/aggregate-functions/reference/sumwithoverflow) - [theilsU](https://clickhouse.com/docs/sql-reference/aggregate-functions/reference/theilsu) - [timeSeriesChangesToGrid](https://clickhouse.com/docs/sql-reference/aggregate-functions/reference/timeSeriesChangesToGrid) - [timeSeriesDeltaToGrid](https://clickhouse.com/docs/sql-reference/aggregate-functions/reference/timeSeriesDeltaToGrid) - [timeSeriesDerivToGrid](https://clickhouse.com/docs/sql-reference/aggregate-functions/reference/timeSeriesDerivToGrid) - [timeSeriesGroupArray](https://clickhouse.com/docs/sql-reference/aggregate-functions/reference/timeSeriesGroupArray) - [timeSeriesInstantDeltaToGrid](https://clickhouse.com/docs/sql-reference/aggregate-functions/reference/timeSeriesInstantDeltaToGrid) - [timeSeriesInstantRateToGrid](https://clickhouse.com/docs/sql-reference/aggregate-functions/reference/timeSeriesInstantRateToGrid) - [timeSeriesLastTwoSamples](https://clickhouse.com/docs/sql-reference/aggregate-functions/reference/timeSeriesLastTwoSamples) - [timeSeriesPredictLinearToGrid](https://clickhouse.com/docs/sql-reference/aggregate-functions/reference/timeSeriesPredictLinearToGrid) - [timeSeriesRateToGrid](https://clickhouse.com/docs/sql-reference/aggregate-functions/reference/timeSeriesRateToGrid) - [timeSeriesResampleToGridWithStaleness](https://clickhouse.com/docs/sql-reference/aggregate-functions/reference/timeSeriesResampleToGridWithStaleness) - [timeSeriesResetsToGrid](https://clickhouse.com/docs/sql-reference/aggregate-functions/reference/timeSeriesResetsToGrid) - [topK](https://clickhouse.com/docs/sql-reference/aggregate-functions/reference/topk) - [topKWeighted](https://clickhouse.com/docs/sql-reference/aggregate-functions/reference/topkweighted) - [uniq](https://clickhouse.com/docs/sql-reference/aggregate-functions/reference/uniq) - [uniqCombined](https://clickhouse.com/docs/sql-reference/aggregate-functions/reference/uniqcombined) - [uniqCombined64](https://clickhouse.com/docs/sql-reference/aggregate-functions/reference/uniqcombined64) - [uniqExact](https://clickhouse.com/docs/sql-reference/aggregate-functions/reference/uniqexact) - [uniqHLL12](https://clickhouse.com/docs/sql-reference/aggregate-functions/reference/uniqhll12) - [uniqTheta](https://clickhouse.com/docs/sql-reference/aggregate-functions/reference/uniqthetasketch) - [varPop](https://clickhouse.com/docs/sql-reference/aggregate-functions/reference/varPop) - [varPopStable](https://clickhouse.com/docs/sql-reference/aggregate-functions/reference/varpopstable) - [varSamp](https://clickhouse.com/docs/sql-reference/aggregate-functions/reference/varSamp) - [varSampStable](https://clickhouse.com/docs/sql-reference/aggregate-functions/reference/varsampstable) - [welchTTest](https://clickhouse.com/docs/sql-reference/aggregate-functions/reference/welchttest) - [Combinators](https://clickhouse.com/docs/sql-reference/aggregate-functions/combinators) - [Parametric](https://clickhouse.com/docs/sql-reference/aggregate-functions/parametric-functions) - [GROUPING](https://clickhouse.com/docs/sql-reference/aggregate-functions/grouping_function) - Combinator examples▼ - Table functions▼ - Window functions▼ - Formats▼ - [Data Lakes](https://clickhouse.com/docs/sql-reference/datalakes)
Readable Markdown	## max[](https://clickhouse.com/docs/sql-reference/aggregate-functions/reference/max#max "Direct link to max") Introduced in: v1.1.0 Aggregate function that calculates the maximum across a group of values. Syntax ``` max(column) ``` Arguments - `column` — Column name or expression. [`Any`](https://clickhouse.com/docs/sql-reference/data-types) Returned value The maximum value across the group with type equal to that of the input. [`Any`](https://clickhouse.com/docs/sql-reference/data-types) Examples Simple max example Query ``` CREATE TABLE employees (name String, salary UInt32) ENGINE = Memory; INSERT INTO employees VALUES ('Alice', 3000), ('Bob', 4000), ('Charlie', 3500); SELECT max(salary) FROM employees; ``` Response ``` ┌─max(salary)─┐ │ 4000 │ └─────────────┘ ``` Max with GROUP BY Query ``` CREATE TABLE sales (department String, revenue UInt32) ENGINE = Memory; INSERT INTO sales VALUES ('Engineering', 100000), ('Engineering', 120000), ('Marketing', 80000), ('Marketing', 90000); SELECT department, max(revenue) FROM sales GROUP BY department ORDER BY department; ``` Response ``` ┌─department──┬─max(revenue)─┐ │ Engineering │ 120000 │ │ Marketing │ 90000 │ └─────────────┴──────────────┘ ``` Note about non-aggregate maximum Query ``` -- If you need non-aggregate function to choose a maximum of two values, see greatest(): SELECT greatest(a, b) FROM table; ``` Response
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