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The arguments must be of the same type."),(0,l.yg)("h2",{id:"array_agg"},"ARRAY_AGG"),(0,l.yg)("p",null,(0,l.yg)("inlineCode",{parentName:"p"},"ARRAY_AGG([DISTINCT] expr, [<NUMERIC>])")),(0,l.yg)("p",null,(0,l.yg)("strong",{parentName:"p"},"Function type:")," ",(0,l.yg)("a",{parentName:"p",href:"/docs/29.0.0/querying/sql-aggregations"},"Aggregation")),(0,l.yg)("p",null,"Returns an array of all values of the specified expression."),(0,l.yg)("h2",{id:"array_append"},"ARRAY_APPEND"),(0,l.yg)("p",null,(0,l.yg)("inlineCode",{parentName:"p"},"ARRAY_APPEND(arr1, expr)")),(0,l.yg)("p",null,(0,l.yg)("strong",{parentName:"p"},"Function type:")," ",(0,l.yg)("a",{parentName:"p",href:"/docs/29.0.0/querying/sql-array-functions"},"Array")),(0,l.yg)("p",null,"Appends ",(0,l.yg)("inlineCode",{parentName:"p"},"expr")," to ",(0,l.yg)("inlineCode",{parentName:"p"},"arr"),", the resulting array type determined by the type of ",(0,l.yg)("inlineCode",{parentName:"p"},"arr1"),"."),(0,l.yg)("h2",{id:"array_concat"},"ARRAY_CONCAT"),(0,l.yg)("p",null,(0,l.yg)("inlineCode",{parentName:"p"},"ARRAY_CONCAT(arr1, arr2)")),(0,l.yg)("p",null,(0,l.yg)("strong",{parentName:"p"},"Function type:")," ",(0,l.yg)("a",{parentName:"p",href:"/docs/29.0.0/querying/sql-array-functions"},"Array")),(0,l.yg)("p",null,"Concatenates ",(0,l.yg)("inlineCode",{parentName:"p"},"arr2")," to ",(0,l.yg)("inlineCode",{parentName:"p"},"arr1"),". 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If no matching elements exist in the array, returns ",(0,l.yg)("inlineCode",{parentName:"p"},"null")," or ",(0,l.yg)("inlineCode",{parentName:"p"},"-1")," if ",(0,l.yg)("inlineCode",{parentName:"p"},"druid.generic.useDefaultValueForNull=true")," (deprecated legacy mode)."),(0,l.yg)("h2",{id:"array_ordinal"},"ARRAY_ORDINAL"),(0,l.yg)("p",null,(0,l.yg)("strong",{parentName:"p"},"Function type:")," ",(0,l.yg)("a",{parentName:"p",href:"/docs/29.0.0/querying/sql-array-functions"},"Array")),(0,l.yg)("p",null,(0,l.yg)("inlineCode",{parentName:"p"},"ARRAY_ORDINAL(arr, long)")),(0,l.yg)("p",null,"Returns the array element at the 1-based index supplied, or null for an out of range index."),(0,l.yg)("h2",{id:"array_ordinal_of"},"ARRAY_ORDINAL_OF"),(0,l.yg)("p",null,(0,l.yg)("inlineCode",{parentName:"p"},"ARRAY_ORDINAL_OF(arr, expr)")),(0,l.yg)("p",null,(0,l.yg)("strong",{parentName:"p"},"Function type:")," ",(0,l.yg)("a",{parentName:"p",href:"/docs/29.0.0/querying/sql-array-functions"},"Array")),(0,l.yg)("p",null,"Returns the 1-based index of the first occurrence of ",(0,l.yg)("inlineCode",{parentName:"p"},"expr")," in the array. If no matching elements exist in the array, returns ",(0,l.yg)("inlineCode",{parentName:"p"},"null")," or ",(0,l.yg)("inlineCode",{parentName:"p"},"-1")," if ",(0,l.yg)("inlineCode",{parentName:"p"},"druid.generic.useDefaultValueForNull=true")," (deprecated legacy mode)."),(0,l.yg)("h2",{id:"array_overlap"},"ARRAY_OVERLAP"),(0,l.yg)("p",null,(0,l.yg)("inlineCode",{parentName:"p"},"ARRAY_OVERLAP(arr1, arr2)")),(0,l.yg)("p",null,(0,l.yg)("strong",{parentName:"p"},"Function type:")," ",(0,l.yg)("a",{parentName:"p",href:"/docs/29.0.0/querying/sql-array-functions"},"Array")),(0,l.yg)("p",null,"Returns 1 if ",(0,l.yg)("inlineCode",{parentName:"p"},"arr1")," and ",(0,l.yg)("inlineCode",{parentName:"p"},"arr2")," have any elements in common, else 0.|"),(0,l.yg)("h2",{id:"array_prepend"},"ARRAY_PREPEND"),(0,l.yg)("p",null,(0,l.yg)("inlineCode",{parentName:"p"},"ARRAY_PREPEND(expr, arr)")),(0,l.yg)("p",null,(0,l.yg)("strong",{parentName:"p"},"Function type:")," ",(0,l.yg)("a",{parentName:"p",href:"/docs/29.0.0/querying/sql-array-functions"},"Array")),(0,l.yg)("p",null,"Prepends ",(0,l.yg)("inlineCode",{parentName:"p"},"expr")," to ",(0,l.yg)("inlineCode",{parentName:"p"},"arr")," at the beginning, the resulting array type determined by the type of ",(0,l.yg)("inlineCode",{parentName:"p"},"arr"),"."),(0,l.yg)("h2",{id:"array_slice"},"ARRAY_SLICE"),(0,l.yg)("p",null,(0,l.yg)("inlineCode",{parentName:"p"},"ARRAY_SLICE(arr, start, end)")),(0,l.yg)("p",null,(0,l.yg)("strong",{parentName:"p"},"Function type:")," ",(0,l.yg)("a",{parentName:"p",href:"/docs/29.0.0/querying/sql-array-functions"},"Array")),(0,l.yg)("p",null,"Returns the subarray of ",(0,l.yg)("inlineCode",{parentName:"p"},"arr")," from the 0-based index ",(0,l.yg)("inlineCode",{parentName:"p"},"start")," (inclusive) to ",(0,l.yg)("inlineCode",{parentName:"p"},"end")," (exclusive). 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numeric expression."),(0,l.yg)("h2",{id:"char_length"},"CHAR_LENGTH"),(0,l.yg)("p",null,(0,l.yg)("inlineCode",{parentName:"p"},"CHAR_LENGTH(expr)")),(0,l.yg)("p",null,(0,l.yg)("strong",{parentName:"p"},"Function type:")," ",(0,l.yg)("a",{parentName:"p",href:"/docs/29.0.0/querying/sql-scalar#string-functions"},"Scalar, string")),(0,l.yg)("p",null,"Alias for ",(0,l.yg)("a",{parentName:"p",href:"#length"},(0,l.yg)("inlineCode",{parentName:"a"},"LENGTH")),"."),(0,l.yg)("h2",{id:"character_length"},"CHARACTER_LENGTH"),(0,l.yg)("p",null,(0,l.yg)("inlineCode",{parentName:"p"},"CHARACTER_LENGTH(expr)")),(0,l.yg)("p",null,(0,l.yg)("strong",{parentName:"p"},"Function type:")," ",(0,l.yg)("a",{parentName:"p",href:"/docs/29.0.0/querying/sql-scalar#string-functions"},"Scalar, string")),(0,l.yg)("p",null,"Alias for ",(0,l.yg)("a",{parentName:"p",href:"#length"},(0,l.yg)("inlineCode",{parentName:"a"},"LENGTH")),"."),(0,l.yg)("h2",{id:"coalesce"},"COALESCE"),(0,l.yg)("p",null,(0,l.yg)("inlineCode",{parentName:"p"},"COALESCE(expr, expr, ...)")),(0,l.yg)("p",null,(0,l.yg)("strong",{parentName:"p"},"Function type:")," ",(0,l.yg)("a",{parentName:"p",href:"/docs/29.0.0/querying/sql-scalar#other-scalar-functions"},"Scalar, other")),(0,l.yg)("p",null,"Returns the first non-null value."),(0,l.yg)("h2",{id:"concat"},"CONCAT"),(0,l.yg)("p",null,(0,l.yg)("inlineCode",{parentName:"p"},"CONCAT(expr, expr...)")),(0,l.yg)("p",null,(0,l.yg)("strong",{parentName:"p"},"Function type:")," ",(0,l.yg)("a",{parentName:"p",href:"/docs/29.0.0/querying/sql-scalar#string-functions"},"Scalar, string")),(0,l.yg)("p",null,"Concatenates a list of expressions."),(0,l.yg)("h2",{id:"contains_string"},"CONTAINS_STRING"),(0,l.yg)("p",null,(0,l.yg)("inlineCode",{parentName:"p"},"CONTAINS_STRING(<CHARACTER>, 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trigonometric cotangent of an angle expressed in radians."),(0,l.yg)("h2",{id:"count"},"COUNT"),(0,l.yg)("p",null,(0,l.yg)("inlineCode",{parentName:"p"},"COUNT([DISTINCT] expr)")),(0,l.yg)("p",null,(0,l.yg)("inlineCode",{parentName:"p"},"COUNT(*)")),(0,l.yg)("p",null,(0,l.yg)("strong",{parentName:"p"},"Function type:")," ",(0,l.yg)("a",{parentName:"p",href:"/docs/29.0.0/querying/sql-aggregations"},"Aggregation")),(0,l.yg)("p",null,"Counts the number of rows."),(0,l.yg)("h2",{id:"current_date"},"CURRENT_DATE"),(0,l.yg)("p",null,(0,l.yg)("inlineCode",{parentName:"p"},"CURRENT_DATE")),(0,l.yg)("p",null,(0,l.yg)("strong",{parentName:"p"},"Function type:")," ",(0,l.yg)("a",{parentName:"p",href:"/docs/29.0.0/querying/sql-scalar#date-and-time-functions"},"Scalar, date and time")),(0,l.yg)("p",null,"Returns the current date in the connection's time 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",(0,l.yg)("a",{parentName:"p",href:"/docs/29.0.0/querying/sql-aggregations"},"Aggregation")),(0,l.yg)("p",null,"Returns the value of a numeric or string expression corresponding to the earliest time value from ",(0,l.yg)("inlineCode",{parentName:"p"},"timestampExpr"),"."),(0,l.yg)("h2",{id:"exp"},"EXP"),(0,l.yg)("p",null,(0,l.yg)("inlineCode",{parentName:"p"},"EXP(<NUMERIC>)")),(0,l.yg)("p",null,(0,l.yg)("strong",{parentName:"p"},"Function type:")," ",(0,l.yg)("a",{parentName:"p",href:"/docs/29.0.0/querying/sql-scalar#numeric-functions"},"Scalar, numeric")),(0,l.yg)("p",null,"Calculates ",(0,l.yg)("em",{parentName:"p"},"e")," raised to the power of the numeric expression."),(0,l.yg)("h2",{id:"extract"},"EXTRACT"),(0,l.yg)("p",null,(0,l.yg)("inlineCode",{parentName:"p"},"EXTRACT(<TIME_UNIT> FROM <TIMESTAMP>)")),(0,l.yg)("p",null,(0,l.yg)("strong",{parentName:"p"},"Function type:")," ",(0,l.yg)("a",{parentName:"p",href:"/docs/29.0.0/querying/sql-scalar#date-and-time-functions"},"Scalar, 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",(0,l.yg)("a",{parentName:"p",href:"/docs/29.0.0/querying/sql-scalar#sketch-functions"},"Scalar, sketch")),(0,l.yg)("p",null,"Returns a human-readable string representation of an HLL sketch."),(0,l.yg)("h2",{id:"hll_sketch_union"},"HLL_SKETCH_UNION"),(0,l.yg)("p",null,(0,l.yg)("inlineCode",{parentName:"p"},"HLL_SKETCH_UNION([lgK, tgtHllType], expr0, expr1, ...)")),(0,l.yg)("p",null,(0,l.yg)("strong",{parentName:"p"},"Function type:")," ",(0,l.yg)("a",{parentName:"p",href:"/docs/29.0.0/querying/sql-scalar#sketch-functions"},"Scalar, sketch")),(0,l.yg)("p",null,"Returns a union of HLL sketches."),(0,l.yg)("h2",{id:"human_readable_binary_byte_format"},"HUMAN_READABLE_BINARY_BYTE_FORMAT"),(0,l.yg)("p",null,(0,l.yg)("inlineCode",{parentName:"p"},"HUMAN_READABLE_BINARY_BYTE_FORMAT(value[, precision])")),(0,l.yg)("p",null,(0,l.yg)("strong",{parentName:"p"},"Function type:")," ",(0,l.yg)("a",{parentName:"p",href:"/docs/29.0.0/querying/sql-scalar#numeric-functions"},"Scalar, 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",(0,l.yg)("inlineCode",{parentName:"p"},"e1"),"."),(0,l.yg)("h2",{id:"parse_json"},"PARSE_JSON"),(0,l.yg)("p",null,(0,l.yg)("strong",{parentName:"p"},"Function type:")," ",(0,l.yg)("a",{parentName:"p",href:"/docs/29.0.0/querying/sql-json-functions"},"JSON")),(0,l.yg)("p",null,(0,l.yg)("inlineCode",{parentName:"p"},"PARSE_JSON(expr)")),(0,l.yg)("p",null,"Parses ",(0,l.yg)("inlineCode",{parentName:"p"},"expr")," into a ",(0,l.yg)("inlineCode",{parentName:"p"},"COMPLEX<json>")," object. 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If the input is not a ",(0,l.yg)("inlineCode",{parentName:"p"},"VARCHAR")," or it is invalid JSON, this function will result in an error."),(0,l.yg)("h2",{id:"parse_long"},"PARSE_LONG"),(0,l.yg)("p",null,(0,l.yg)("inlineCode",{parentName:"p"},"PARSE_LONG(<CHARACTER>, [<INTEGER>])")),(0,l.yg)("p",null,(0,l.yg)("strong",{parentName:"p"},"Function type:")," ",(0,l.yg)("a",{parentName:"p",href:"/docs/29.0.0/querying/sql-scalar#string-functions"},"Scalar, string")),(0,l.yg)("p",null,"Converts a string into a BIGINT with the given base or into a DECIMAL data type if the base is not specified."),(0,l.yg)("h2",{id:"position"},"POSITION"),(0,l.yg)("p",null,(0,l.yg)("inlineCode",{parentName:"p"},"POSITION(<CHARACTER> IN <CHARACTER> [FROM <INTEGER>])")),(0,l.yg)("p",null,(0,l.yg)("strong",{parentName:"p"},"Function type:")," ",(0,l.yg)("a",{parentName:"p",href:"/docs/29.0.0/querying/sql-scalar#string-functions"},"Scalar, string")),(0,l.yg)("p",null,"Returns the one-based index position of a substring within an expression, optionally starting from a given one-based index."),(0,l.yg)("h2",{id:"power"},"POWER"),(0,l.yg)("p",null,(0,l.yg)("inlineCode",{parentName:"p"},"POWER(expr, power)")),(0,l.yg)("p",null,(0,l.yg)("strong",{parentName:"p"},"Function type:")," ",(0,l.yg)("a",{parentName:"p",href:"/docs/29.0.0/querying/sql-scalar#numeric-functions"},"Scalar, numeric")),(0,l.yg)("p",null,"Calculates a numerical expression raised to the specified power."),(0,l.yg)("h2",{id:"radians"},"RADIANS"),(0,l.yg)("p",null,(0,l.yg)("inlineCode",{parentName:"p"},"RADIANS(expr)")),(0,l.yg)("p",null,(0,l.yg)("strong",{parentName:"p"},"Function type:")," ",(0,l.yg)("a",{parentName:"p",href:"/docs/29.0.0/querying/sql-scalar#numeric-functions"},"Scalar, numeric")),(0,l.yg)("p",null,"Converts an angle from degrees to radians."),(0,l.yg)("h2",{id:"regexp_extract"},"REGEXP_EXTRACT"),(0,l.yg)("p",null,(0,l.yg)("inlineCode",{parentName:"p"},"REGEXP_EXTRACT(<CHARACTER>, <CHARACTER>, [<INTEGER>])")),(0,l.yg)("p",null,(0,l.yg)("strong",{parentName:"p"},"Function type:")," ",(0,l.yg)("a",{parentName:"p",href:"/docs/29.0.0/querying/sql-scalar#string-functions"},"Scalar, string")),(0,l.yg)("p",null,"Applies a regular expression to the string expression and returns the _n_th match."),(0,l.yg)("h2",{id:"regexp_like"},"REGEXP_LIKE"),(0,l.yg)("p",null,(0,l.yg)("inlineCode",{parentName:"p"},"REGEXP_LIKE(<CHARACTER>, <CHARACTER>)")),(0,l.yg)("p",null,(0,l.yg)("strong",{parentName:"p"},"Function type:")," ",(0,l.yg)("a",{parentName:"p",href:"/docs/29.0.0/querying/sql-scalar#string-functions"},"Scalar, string")),(0,l.yg)("p",null,"Returns true or false signifying whether the regular expression finds a match in the string expression."),(0,l.yg)("h2",{id:"regexp_replace"},"REGEXP_REPLACE"),(0,l.yg)("p",null,(0,l.yg)("inlineCode",{parentName:"p"},"REGEXP_REPLACE(<CHARACTER>, <CHARACTER>, <CHARACTER>)")),(0,l.yg)("p",null,(0,l.yg)("strong",{parentName:"p"},"Function type:")," ",(0,l.yg)("a",{parentName:"p",href:"/docs/29.0.0/querying/sql-scalar#string-functions"},"Scalar, string")),(0,l.yg)("p",null,"Replaces all occurrences of a regular expression in a string expression with a replacement string. 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",(0,l.yg)("a",{parentName:"p",href:"/docs/29.0.0/querying/sql-scalar#numeric-functions"},"Scalar, numeric")),(0,l.yg)("p",null,"Calculates the rounded value for a numerical expression."),(0,l.yg)("h2",{id:"rpad"},"RPAD"),(0,l.yg)("p",null,(0,l.yg)("inlineCode",{parentName:"p"},"RPAD(<CHARACTER>, <INTEGER>, [<CHARACTER>])")),(0,l.yg)("p",null,(0,l.yg)("strong",{parentName:"p"},"Function type:")," ",(0,l.yg)("a",{parentName:"p",href:"/docs/29.0.0/querying/sql-scalar#string-functions"},"Scalar, string")),(0,l.yg)("p",null,"Returns the rightmost number of characters from an expression, optionally padded with the given characters."),(0,l.yg)("h2",{id:"rtrim"},"RTRIM"),(0,l.yg)("p",null,(0,l.yg)("inlineCode",{parentName:"p"},"RTRIM(<CHARACTER>, [<CHARACTER>])")),(0,l.yg)("p",null,(0,l.yg)("strong",{parentName:"p"},"Function type:")," ",(0,l.yg)("a",{parentName:"p",href:"/docs/29.0.0/querying/sql-scalar#string-functions"},"Scalar, string")),(0,l.yg)("p",null,"Trims characters from the 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",(0,l.yg)("a",{parentName:"p",href:"/docs/29.0.0/querying/sql-aggregations"},"Aggregation")),(0,l.yg)("p",null,"Calculates the population standard deviation of a set of values."),(0,l.yg)("h2",{id:"stddev_samp"},"STDDEV_SAMP"),(0,l.yg)("p",null,(0,l.yg)("inlineCode",{parentName:"p"},"STDDEV_SAMP(expr)")),(0,l.yg)("p",null,(0,l.yg)("strong",{parentName:"p"},"Function type:")," ",(0,l.yg)("a",{parentName:"p",href:"/docs/29.0.0/querying/sql-aggregations"},"Aggregation")),(0,l.yg)("p",null,"Calculates the sample standard deviation of a set of values."),(0,l.yg)("h2",{id:"string_agg"},"STRING_AGG"),(0,l.yg)("p",null,(0,l.yg)("inlineCode",{parentName:"p"},"STRING_AGG(expr, separator, [size])")),(0,l.yg)("p",null,(0,l.yg)("strong",{parentName:"p"},"Function type:")," ",(0,l.yg)("a",{parentName:"p",href:"/docs/29.0.0/querying/sql-aggregations"},"Aggregation")),(0,l.yg)("p",null,"Collects all values of an expression into a single 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