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Code Editor : functions-mysql.ini

[ABS]
declaration=X
category=Numeric Functions
description=Returns the absolute value of X, or NULL if X is NULL
[ACOS]
declaration=X
category=Numeric Functions
description=Returns the arc cosine of X, that is, the value whose cosine is X
[ADDDATE]
declaration=date,INTERVAL expr unit
category=Date and Time Functions
description=When invoked with the INTERVAL form of the second argument, ADDDATE() is a\nsynonym for DATE_ADD()
[ADDTIME]
declaration=expr1,expr2
category=Date and Time Functions
description=ADDTIME() adds expr2 to expr1 and returns the result
[AES_DECRYPT]
declaration=crypt_str,key_str[,init_vector]
category=Encryption Functions
description=This function decrypts data using the official AES (Advanced Encryption\nStandard) algorithm
[AES_ENCRYPT]
declaration=str,key_str[,init_vector]
category=Encryption Functions
description=AES_ENCRYPT() and AES_DECRYPT() implement encryption and decryption of data\nusing the official AES (Advanced Encryption Standard) algorithm, previously\nknown as "Rijndael
[ANY_VALUE]
declaration=arg
category=Miscellaneous Functions
description=This function is useful for GROUP BY queries when the ONLY_FULL_GROUP_BY\nSQL mode is enabled, for cases when MySQL rejects a query that you know is\nvalid for reasons that MySQL cannot determine
[ASCII]
declaration=str
category=String Functions
description=Returns the numeric value of the leftmost character of the string str
[ASIN]
declaration=X
category=Numeric Functions
description=Returns the arc sine of X, that is, the value whose sine is X
[ASYMMETRIC_DECRYPT]
declaration=algorithm, crypt_str, key_str
category=Enterprise Encryption Functions
description=Decrypts an encrypted string using the given algorithm and key string, and\nreturns the resulting plaintext as a binary string
[ASYMMETRIC_DERIVE]
declaration=pub_key_str, priv_key_str
category=Enterprise Encryption Functions
description=Derives a symmetric key using the private key of one party and the public\nkey of another, and returns the resulting key as a binary string
[ASYMMETRIC_ENCRYPT]
declaration=algorithm, str, key_str
category=Enterprise Encryption Functions
description=Encrypts a string using the given algorithm and key string, and returns the\nresulting ciphertext as a binary string
[ASYMMETRIC_SIGN]
declaration=algorithm, digest_str, priv_key_str, digest_type
category=Enterprise Encryption Functions
description=Signs a digest string using a private key string, and returns the signature\nas a binary string
[ASYMMETRIC_VERIFY]
declaration=algorithm, digest_str, sig_str, pub_key_str,
digest_type
category=Enterprise Encryption Functions
description=Verifies whether the signature string matches the digest string, and\nreturns 1 or 0 to indicate whether verification succeeded or failed
[ATAN]
declaration=X
category=Numeric Functions
description=Returns the arc tangent of X, that is, the value whose tangent is X
[AVG]
declaration=[DISTINCT] expr
category=Aggregate Functions and Modifiers
description=Returns the average value of expr
[BENCHMARK]
declaration=count,expr
category=Information Functions
description=The BENCHMARK() function executes the expression expr repeatedly count\ntimes
[BIN]
declaration=N
category=String Functions
description=Returns a string representation of the binary value of N, where N is a\nlonglong (BIGINT) number
[BIN_TO_UUID]
declaration=binary_uuid
category=Miscellaneous Functions
description=BIN_TO_UUID() is the inverse of UUID_TO_BIN()
[BIT_AND]
declaration=expr
category=Aggregate Functions and Modifiers
description=Returns the bitwise AND of all bits in expr
[BIT_COUNT]
declaration=N
category=Bit Functions
description=Returns the number of bits that are set in the argument N as an unsigned\n64-bit integer, or NULL if the argument is NULL
[BIT_LENGTH]
declaration=str
category=String Functions
description=Returns the length of the string str in bits
[BIT_OR]
declaration=expr
category=Aggregate Functions and Modifiers
description=Returns the bitwise OR of all bits in expr
[BIT_XOR]
declaration=expr
category=Aggregate Functions and Modifiers
description=Returns the bitwise XOR of all bits in expr
[CAST]
declaration=expr AS type [ARRAY]
category=Cast Functions and Operators
description=The CAST() function takes an expression of any type and produces a result\nvalue of the specified type, similar to CONVERT()
[CEIL]
declaration=X
category=Numeric Functions
description=CEIL() is a synonym for CEILING()
[CEILING]
declaration=X
category=Numeric Functions
description=Returns the smallest integer value not less than X
[CHARACTER_LENGTH]
declaration=str
category=String Functions
description=CHARACTER_LENGTH() is a synonym for CHAR_LENGTH()
[CHARSET]
declaration=str
category=Information Functions
description=Returns the character set of the string argument
[CHAR_LENGTH]
declaration=str
category=String Functions
description=Returns the length of the string str, measured in characters
[COALESCE]
declaration=value,...
category=Comparison Operators
description=Returns the first non-NULL value in the list, or NULL if there are no\nnon-NULL values
[COERCIBILITY]
declaration=str
category=Information Functions
description=Returns the collation coercibility value of the string argument
[COLLATION]
declaration=str
category=Information Functions
description=Returns the collation of the string argument
[COMPRESS]
declaration=string_to_compress
category=Encryption Functions
description=Compresses a string and returns the result as a binary string
[CONCAT]
declaration=str1,str2,...
category=String Functions
description=Returns the string that results from concatenating the arguments
[CONCAT_WS]
declaration=separator,str1,str2,...
category=String Functions
description=CONCAT_WS() stands for Concatenate With Separator and is a special form of\nCONCAT()
[CONV]
declaration=N,from_base,to_base
category=Numeric Functions
description=Converts numbers between different number bases
[CONVERT]
declaration=expr USING transcoding_name
category=Cast Functions and Operators
description=The CONVERT() function takes an expression of any type and produces a\nresult value of the specified type
[CONVERT_TZ]
declaration=dt,from_tz,to_tz
category=Date and Time Functions
description=CONVERT_TZ() converts a datetime value dt from the time zone given by\nfrom_tz to the time zone given by to_tz and returns the resulting value
[COS]
declaration=X
category=Numeric Functions
description=Returns the cosine of X, where X is given in radians
[COT]
declaration=X
category=Numeric Functions
description=Returns the cotangent of X
[COUNT]
declaration=expr
category=Aggregate Functions and Modifiers
description=Returns a count of the number of non-NULL values of expr in the rows\nretrieved by a SELECT statement
[CRC32]
declaration=expr
category=Numeric Functions
description=Computes a cyclic redundancy check value and returns a 32-bit unsigned\nvalue
[CREATE_ASYMMETRIC_PRIV_KEY]
declaration=algorithm, {key_len|dh_secret}
category=Enterprise Encryption Functions
description=Creates a private key using the given algorithm and key length or DH\nsecret, and returns the key as a binary string in PEM format
[CREATE_ASYMMETRIC_PUB_KEY]
declaration=algorithm, priv_key_str
category=Enterprise Encryption Functions
description=Derives a public key from the given private key using the given algorithm,\nand returns the key as a binary string in PEM format
[CREATE_DH_PARAMETERS]
declaration=key_len
category=Enterprise Encryption Functions
description=Creates a shared secret for generating a DH private/public key pair and\nreturns a binary string that can be passed to create_asymmetric_priv_key()
[CREATE_DIGEST]
declaration=digest_type, str
category=Enterprise Encryption Functions
description=Creates a digest from the given string using the given digest type, and\nreturns the digest as a binary string
[CURTIME]
declaration=[fsp]
category=Date and Time Functions
description=Returns the current time as a value in 'hh:mm:ss' or hhmmss format,\ndepending on whether the function is used in string or numeric context
[DATEDIFF]
declaration=expr1,expr2
category=Date and Time Functions
description=DATEDIFF() returns expr1 - expr2 expressed as a value in days from one\ndate to the other
[DATE_ADD]
declaration=date,INTERVAL expr unit
category=Date and Time Functions
description=These functions perform date arithmetic
[DATE_FORMAT]
declaration=date,format
category=Date and Time Functions
description=Formats the date value according to the format string
[DATE_SUB]
declaration=date,INTERVAL expr unit
category=Date and Time Functions
description=See the description for DATE_ADD()
[DAY]
declaration=date
category=Date and Time Functions
description=DAY() is a synonym for DAYOFMONTH()
[DAYNAME]
declaration=date
category=Date and Time Functions
description=Returns the name of the weekday for date
[DAYOFMONTH]
declaration=date
category=Date and Time Functions
description=Returns the day of the month for date, in the range 1 to 31, or 0 for dates\nsuch as '0000-00-00' or '2008-00-00' that have a zero day part
[DAYOFWEEK]
declaration=date
category=Date and Time Functions
description=Returns the weekday index for date (1 = Sunday, 2 = Monday, 
[DAYOFYEAR]
declaration=date
category=Date and Time Functions
description=Returns the day of the year for date, in the range 1 to 366
[DEFAULT]
declaration=col_name
category=Miscellaneous Functions
description=Returns the default value for a table column
[DEGREES]
declaration=X
category=Numeric Functions
description=Returns the argument X, converted from radians to degrees
[ELT]
declaration=N,str1,str2,str3,...
category=String Functions
description=ELT() returns the Nth element of the list of strings: str1 if N = 1, str2\nif N = 2, and so on
[ENUM]
declaration='value1','value2',...
category=Data Types
description=collation_name]  An enumeration
[EXP]
declaration=X
category=Numeric Functions
description=Returns the value of e (the base of natural logarithms) raised to the power\nof X
[EXPORT_SET]
declaration=bits,on,off[,separator[,number_of_bits]]
category=String Functions
description=Returns a string such that for every bit set in the value bits, you get an\non string and for every bit not set in the value, you get an off string
[EXTRACT]
declaration=unit FROM date
category=Date and Time Functions
description=The EXTRACT() function uses the same kinds of unit specifiers as DATE_ADD()\nor DATE_SUB(), but extracts parts from the date rather than performing date\narithmetic
[EXTRACTVALUE]
declaration=xml_frag, xpath_expr
category=XML
description=ExtractValue() takes two string arguments, a fragment of XML markup\nxml_frag and an XPath expression xpath_expr (also known as a locator); it\nreturns the text (CDATA) of the first text node which is a child of the\nelement or elements matched by the XPath expression
[FIELD]
declaration=str,str1,str2,str3,...
category=String Functions
description=Returns the index (position) of str in the str1, str2, str3, 
[FIND_IN_SET]
declaration=str,strlist
category=String Functions
description=Returns a value in the range of 1 to N if the string str is in the string\nlist strlist consisting of N substrings
[FIRST_VALUE]
declaration=expr
category=Window Functions
description=Returns the value of expr from the first row of the window frame
[FLOOR]
declaration=X
category=Numeric Functions
description=Returns the largest integer value not greater than X
[FORMAT]
declaration=X,D[,locale]
category=String Functions
description=Formats the number X to a format like '#,###,###
[FORMAT_BYTES]
declaration=count
category=Performance Schema Functions
description=Given a numeric byte count, converts it to human-readable format and\nreturns a string consisting of a value and a units indicator
[FORMAT_PICO_TIME]
declaration=time_val
category=Performance Schema Functions
description=Given a numeric Performance Schema latency or wait time in picoseconds,\nconverts it to human-readable format and returns a string consisting of a\nvalue and a units indicator
[FROM_BASE64]
declaration=str
category=String Functions
description=Takes a string encoded with the base-64 encoded rules used by TO_BASE64()\nand returns the decoded result as a binary string
[FROM_DAYS]
declaration=N
category=Date and Time Functions
description=Given a day number N, returns a DATE value
[FROM_UNIXTIME]
declaration=unix_timestamp[,format]
category=Date and Time Functions
description=Returns a representation of the unix_timestamp argument as a value in\n'YYYY-MM-DD hh:mm:ss' or YYYYMMDDhhmmss format, depending on whether the\nfunction is used in a string or numeric context
[GEOMCOLLECTION]
declaration=g [, g] ...
category=Geometry Constructors
description=Constructs a GeomCollection value from the geometry arguments
[GEOMETRYCOLLECTION]
declaration=g [, g] ...
category=Geometry Constructors
description=Constructs a GeomCollection value from the geometry arguments
[GET_FORMAT]
declaration={DATE|TIME|DATETIME}, {'EUR'|'USA'|'JIS'|'ISO'|'INTERNAL'}
category=Date and Time Functions
description=Returns a format string
[GET_LOCK]
declaration=str,timeout
category=Locking Functions
description=Tries to obtain a lock with a name given by the string str, using a timeout\nof timeout seconds
[GREATEST]
declaration=value1,value2,...
category=Comparison Operators
description=With two or more arguments, returns the largest (maximum-valued) argument
[GROUPING]
declaration=expr [, expr] ...
category=Miscellaneous Functions
description=For GROUP BY queries that include a WITH ROLLUP modifier, the ROLLUP\noperation produces super-aggregate output rows where NULL represents the\nset of all values
[GROUP_CONCAT]
declaration=expr
category=Aggregate Functions and Modifiers
description=This function returns a string result with the concatenated non-NULL values\nfrom a group
[GTID_SUBSET]
declaration=set1,set2
category=GTID
description=Given two sets of global transaction identifiers set1 and set2, returns\ntrue if all GTIDs in set1 are also in set2
[GTID_SUBTRACT]
declaration=set1,set2
category=GTID
description=Given two sets of global transaction identifiers set1 and set2, returns\nonly those GTIDs from set1 that are not in set2
[HEX]
declaration=str
category=String Functions
description=For a string argument str, HEX() returns a hexadecimal string\nrepresentation of str where each byte of each character in str is converted\nto two hexadecimal digits
[HOUR]
declaration=time
category=Date and Time Functions
description=Returns the hour for time
[IFNULL]
declaration=expr1,expr2
category=Flow Control Functions
description=If expr1 is not NULL, IFNULL() returns expr1; otherwise it returns expr2
[INET6_ATON]
declaration=expr
category=Miscellaneous Functions
description=Given an IPv6 or IPv4 network address as a string, returns a binary string\nthat represents the numeric value of the address in network byte order (big\nendian)
[INET6_NTOA]
declaration=expr
category=Miscellaneous Functions
description=Given an IPv6 or IPv4 network address represented in numeric form as a\nbinary string, returns the string representation of the address as a string\nin the connection character set
[INET_ATON]
declaration=expr
category=Miscellaneous Functions
description=Given the dotted-quad representation of an IPv4 network address as a\nstring, returns an integer that represents the numeric value of the address\nin network byte order (big endian)
[INET_NTOA]
declaration=expr
category=Miscellaneous Functions
description=Given a numeric IPv4 network address in network byte order, returns the\ndotted-quad string representation of the address as a string in the\nconnection character set
[INSTR]
declaration=str,substr
category=String Functions
description=Returns the position of the first occurrence of substring substr in string\nstr
[INTERVAL]
declaration=N,N1,N2,N3,...
category=Comparison Operators
description=Returns 0 if N < N1, 1 if N < N2 and so on or -1 if N is NULL
[ISNULL]
declaration=expr
category=Comparison Operators
description=If expr is NULL, ISNULL() returns 1, otherwise it returns 0
[IS_FREE_LOCK]
declaration=str
category=Locking Functions
description=Checks whether the lock named str is free to use (that is, not locked)
[IS_IPV4]
declaration=expr
category=Miscellaneous Functions
description=Returns 1 if the argument is a valid IPv4 address specified as a string, 0\notherwise
[IS_IPV4_COMPAT]
declaration=expr
category=Miscellaneous Functions
description=This function takes an IPv6 address represented in numeric form as a binary\nstring, as returned by INET6_ATON()
[IS_IPV4_MAPPED]
declaration=expr
category=Miscellaneous Functions
description=This function takes an IPv6 address represented in numeric form as a binary\nstring, as returned by INET6_ATON()
[IS_IPV6]
declaration=expr
category=Miscellaneous Functions
description=Returns 1 if the argument is a valid IPv6 address specified as a string, 0\notherwise
[IS_USED_LOCK]
declaration=str
category=Locking Functions
description=Checks whether the lock named str is in use (that is, locked)
[IS_UUID]
declaration=string_uuid
category=Miscellaneous Functions
description=Returns 1 if the argument is a valid string-format UUID, 0 if the argument\nis not a valid UUID, and NULL if the argument is NULL
[JSON_ARRAY]
declaration=[val[, val] ...]
category=MBR Functions
description=Evaluates a (possibly empty) list of values and returns a JSON array\ncontaining those values
[JSON_ARRAYAGG]
declaration=col_or_expr
category=Aggregate Functions and Modifiers
description=Aggregates a result set as a single JSON array whose elements consist of\nthe rows
[JSON_ARRAY_APPEND]
declaration=json_doc, path, val[, path, val] ...
category=MBR Functions
description=Appends values to the end of the indicated arrays within a JSON document\nand returns the result
[JSON_ARRAY_INSERT]
declaration=json_doc, path, val[, path, val] ...
category=MBR Functions
description=Updates a JSON document, inserting into an array within the document and\nreturning the modified document
[JSON_CONTAINS]
declaration=target, candidate[, path]
category=MBR Functions
description=Indicates by returning 1 or 0 whether a given candidate JSON document is\ncontained within a target JSON document, or---if a path argument was\nsupplied---whether the candidate is found at a specific path within the\ntarget
[JSON_CONTAINS_PATH]
declaration=json_doc, one_or_all, path[, path] ...
category=MBR Functions
description=Returns 0 or 1 to indicate whether a JSON document contains data at a given\npath or paths
[JSON_DEPTH]
declaration=json_doc
category=MBR Functions
description=Returns the maximum depth of a JSON document
[JSON_EXTRACT]
declaration=json_doc, path[, path] ...
category=MBR Functions
description=Returns data from a JSON document, selected from the parts of the document\nmatched by the path arguments
[JSON_INSERT]
declaration=json_doc, path, val[, path, val] ...
category=MBR Functions
description=Inserts data into a JSON document and returns the result
[JSON_KEYS]
declaration=json_doc[, path]
category=MBR Functions
description=Returns the keys from the top-level value of a JSON object as a JSON array,\nor, if a path argument is given, the top-level keys from the selected path
[JSON_LENGTH]
declaration=json_doc[, path]
category=MBR Functions
description=Returns the length of a JSON document, or, if a path argument is given, the\nlength of the value within the document identified by the path
[JSON_MERGE]
declaration=json_doc, json_doc[, json_doc] ...
category=MBR Functions
description=Merges two or more JSON documents
[JSON_OBJECT]
declaration=[key, val[, key, val] ...]
category=MBR Functions
description=Evaluates a (possibly empty) list of key-value pairs and returns a JSON\nobject containing those pairs
[JSON_OBJECTAGG]
declaration=key, value
category=Aggregate Functions and Modifiers
description=Takes two column names or expressions as arguments, the first of these\nbeing used as a key and the second as a value, and returns a JSON object\ncontaining key-value pairs
[JSON_OVERLAPS]
declaration=json_doc1, json_doc2
category=MBR Functions
description=Compares two JSON documents
[JSON_PRETTY]
declaration=json_val
category=MBR Functions
description=Provides pretty-printing of JSON values similar to that implemented in PHP\nand by other languages and database systems
[JSON_QUOTE]
declaration=string
category=MBR Functions
description=Quotes a string as a JSON value by wrapping it with double quote characters\nand escaping interior quote and other characters, then returning the result\nas a utf8mb4 string
[JSON_REMOVE]
declaration=json_doc, path[, path] ...
category=MBR Functions
description=Removes data from a JSON document and returns the result
[JSON_REPLACE]
declaration=json_doc, path, val[, path, val] ...
category=MBR Functions
description=Replaces existing values in a JSON document and returns the result
[JSON_SCHEMA_VALID]
declaration=schema,document
category=MBR Functions
description=Validates a JSON document against a JSON schema
[JSON_SCHEMA_VALIDATION_REPORT]
declaration=schema,document
category=MBR Functions
description=Validates a JSON document against a JSON schema
[JSON_SEARCH]
declaration=json_doc, one_or_all, search_str[, escape_char[, path] ...]
category=MBR Functions
description=Returns the path to the given string within a JSON document
[JSON_SET]
declaration=json_doc, path, val[, path, val] ...
category=MBR Functions
description=Inserts or updates data in a JSON document and returns the result
[JSON_STORAGE_FREE]
declaration=json_val
category=MBR Functions
description=For a JSON column value, this function shows how much storage space was\nfreed in its binary representation after it was updated in place using\nJSON_SET(), JSON_REPLACE(), or JSON_REMOVE()
[JSON_STORAGE_SIZE]
declaration=json_val
category=MBR Functions
description=This function returns the number of bytes used to store the binary\nrepresentation of a JSON document
[JSON_TABLE]
declaration=expr, path COLUMNS (column_list
category=MBR Functions
description=Extracts data from a JSON document and returns it as a relational table\nhaving the specified columns
[JSON_TYPE]
declaration=json_val
category=MBR Functions
description=Returns a utf8mb4 string indicating the type of a JSON value
[JSON_UNQUOTE]
declaration=json_val
category=MBR Functions
description=Unquotes JSON value and returns the result as a utf8mb4 string
[JSON_VALID]
declaration=val
category=MBR Functions
description=Returns 0 or 1 to indicate whether a value is valid JSON
[JSON_VALUE]
declaration=json_doc, path
category=MBR Functions
description=Extracts a value from a JSON document at the path given in the specified\ndocument, and returns the extracted value, optionally converting it to a\ndesired type
[LAG]
declaration=expr [, N[, default]]
category=Window Functions
description=Returns the value of expr from the row that lags (precedes) the current row\nby N rows within its partition
[LAST_DAY]
declaration=date
category=Date and Time Functions
description=Takes a date or datetime value and returns the corresponding value for the\nlast day of the month
[LAST_VALUE]
declaration=expr
category=Window Functions
description=Returns the value of expr from the last row of the window frame
[LCASE]
declaration=str
category=String Functions
description=LCASE() is a synonym for LOWER()
[LEAD]
declaration=expr [, N[, default]]
category=Window Functions
description=Returns the value of expr from the row that leads (follows) the current row\nby N rows within its partition
[LEAST]
declaration=value1,value2,...
category=Comparison Operators
description=With two or more arguments, returns the smallest (minimum-valued) argument
[LEFT]
declaration=str,len
category=String Functions
description=Returns the leftmost len characters from the string str, or NULL if any\nargument is NULL
[LENGTH]
declaration=str
category=String Functions
description=Returns the length of the string str, measured in bytes
[LINESTRING]
declaration=pt [, pt] ...
category=Geometry Constructors
description=Constructs a LineString value from a number of Point or WKB Point arguments
[LN]
declaration=X
category=Numeric Functions
description=Returns the natural logarithm of X; that is, the base-e logarithm of X
[LOAD_FILE]
declaration=file_name
category=String Functions
description=Reads the file and returns the file contents as a string
[LOCATE]
declaration=substr,str
category=String Functions
description=The first syntax returns the position of the first occurrence of substring\nsubstr in string str
[LOG]
declaration=X
category=Numeric Functions
description=If called with one parameter, this function returns the natural logarithm\nof X
[LOG10]
declaration=X
category=Numeric Functions
description=Returns the base-10 logarithm of X
[LOG2]
declaration=X
category=Numeric Functions
description=Returns the base-2 logarithm of X
[LOWER]
declaration=str
category=String Functions
description=Returns the string str with all characters changed to lowercase according\nto the current character set mapping
[LPAD]
declaration=str,len,padstr
category=String Functions
description=Returns the string str, left-padded with the string padstr to a length of\nlen characters
[LTRIM]
declaration=str
category=String Functions
description=Returns the string str with leading space characters removed
[MAKEDATE]
declaration=year,dayofyear
category=Date and Time Functions
description=Returns a date, given year and day-of-year values
[MAKETIME]
declaration=hour,minute,second
category=Date and Time Functions
description=Returns a time value calculated from the hour, minute, and second arguments
[MAKE_SET]
declaration=bits,str1,str2,...
category=String Functions
description=Returns a set value (a string containing substrings separated by ,\ncharacters) consisting of the strings that have the corresponding bit in\nbits set
[MASTER_POS_WAIT]
declaration=log_name,log_pos[,timeout][,channel]
category=Miscellaneous Functions
description=This function is useful for control of source/replica synchronization
[MAX]
declaration=[DISTINCT] expr
category=Aggregate Functions and Modifiers
description=Returns the maximum value of expr
[MBRCONTAINS]
declaration=g1, g2
category=MBR Functions
description=Returns 1 or 0 to indicate whether the minimum bounding rectangle of g1\ncontains the minimum bounding rectangle of g2
[MBRCOVEREDBY]
declaration=g1, g2
category=MBR Functions
description=Returns 1 or 0 to indicate whether the minimum bounding rectangle of g1 is\ncovered by the minimum bounding rectangle of g2
[MBRCOVERS]
declaration=g1, g2
category=MBR Functions
description=Returns 1 or 0 to indicate whether the minimum bounding rectangle of g1\ncovers the minimum bounding rectangle of g2
[MBRDISJOINT]
declaration=g1, g2
category=MBR Functions
description=Returns 1 or 0 to indicate whether the minimum bounding rectangles of the\ntwo geometries g1 and g2 are disjoint (do not intersect)
[MBREQUALS]
declaration=g1, g2
category=MBR Functions
description=Returns 1 or 0 to indicate whether the minimum bounding rectangles of the\ntwo geometries g1 and g2 are the same
[MBRINTERSECTS]
declaration=g1, g2
category=MBR Functions
description=Returns 1 or 0 to indicate whether the minimum bounding rectangles of the\ntwo geometries g1 and g2 intersect
[MBROVERLAPS]
declaration=g1, g2
category=MBR Functions
description=Two geometries spatially overlap if they intersect and their intersection\nresults in a geometry of the same dimension but not equal to either of the\ngiven geometries
[MBRTOUCHES]
declaration=g1, g2
category=MBR Functions
description=Two geometries spatially touch if their interiors do not intersect, but the\nboundary of one of the geometries intersects either the boundary or the\ninterior of the other
[MBRWITHIN]
declaration=g1, g2
category=MBR Functions
description=Returns 1 or 0 to indicate whether the minimum bounding rectangle of g1 is\nwithin the minimum bounding rectangle of g2
[MD5]
declaration=str
category=Encryption Functions
description=Calculates an MD5 128-bit checksum for the string
[MICROSECOND]
declaration=expr
category=Date and Time Functions
description=Returns the microseconds from the time or datetime expression expr as a\nnumber in the range from 0 to 999999
[MID]
declaration=str,pos,len
category=String Functions
description=MID(str,pos,len) is a synonym for SUBSTRING(str,pos,len)
[MIN]
declaration=[DISTINCT] expr
category=Aggregate Functions and Modifiers
description=Returns the minimum value of expr
[MINUTE]
declaration=time
category=Date and Time Functions
description=Returns the minute for time, in the range 0 to 59
[MOD]
declaration=N,M
category=Numeric Functions
description=Modulo operation
[MONTH]
declaration=date
category=Date and Time Functions
description=Returns the month for date, in the range 1 to 12 for January to December,\nor 0 for dates such as '0000-00-00' or '2008-00-00' that have a zero month\npart
[MONTHNAME]
declaration=date
category=Date and Time Functions
description=Returns the full name of the month for date
[MULTILINESTRING]
declaration=ls [, ls] ...
category=Geometry Constructors
description=Constructs a MultiLineString value using LineString or WKB LineString\narguments
[MULTIPOINT]
declaration=pt [, pt2] ...
category=Geometry Constructors
description=Constructs a MultiPoint value using Point or WKB Point arguments
[MULTIPOLYGON]
declaration=poly [, poly] ...
category=Geometry Constructors
description=Constructs a MultiPolygon value from a set of Polygon or WKB Polygon\narguments
[NAME_CONST]
declaration=name,value
category=Miscellaneous Functions
description=Returns the given value
[NOW]
declaration=[fsp]
category=Date and Time Functions
description=Returns the current date and time as a value in 'YYYY-MM-DD hh:mm:ss' or\nYYYYMMDDhhmmss format, depending on whether the function is used in string\nor numeric context
[NTH_VALUE]
declaration=expr, N
category=Window Functions
description=Returns the value of expr from the N-th row of the window frame
[NTILE]
declaration=N
category=Window Functions
description=Divides a partition into N groups (buckets), assigns each row in the\npartition its bucket number, and returns the bucket number of the current\nrow within its partition
[NULLIF]
declaration=expr1,expr2
category=Flow Control Functions
description=Returns NULL if expr1 = expr2 is true, otherwise returns expr1
[OCT]
declaration=N
category=String Functions
description=Returns a string representation of the octal value of N, where N is a\nlonglong (BIGINT) number
[OCTET_LENGTH]
declaration=str
category=String Functions
description=OCTET_LENGTH() is a synonym for LENGTH()
[ORD]
declaration=str
category=String Functions
description=If the leftmost character of the string str is a multibyte character,\nreturns the code for that character, calculated from the numeric values of\nits constituent bytes using this formula:    (1st byte code) + (2nd byte\ncode * 256) + (3rd byte code * 256^2) 
[PERIOD_ADD]
declaration=P,N
category=Date and Time Functions
description=Adds N months to period P (in the format YYMM or YYYYMM)
[PERIOD_DIFF]
declaration=P1,P2
category=Date and Time Functions
description=Returns the number of months between periods P1 and P2
[POINT]
declaration=x, y
category=Geometry Constructors
description=Constructs a Point using its coordinates
[POLYGON]
declaration=ls [, ls] ...
category=Geometry Constructors
description=Constructs a Polygon value from a number of LineString or WKB LineString\narguments
[POSITION]
declaration=substr IN str
category=String Functions
description=POSITION(substr IN str) is a synonym for LOCATE(substr,str)
[POW]
declaration=X,Y
category=Numeric Functions
description=Returns the value of X raised to the power of Y
[POWER]
declaration=X,Y
category=Numeric Functions
description=This is a synonym for POW()
[PS_THREAD_ID]
declaration=connection_id
category=Performance Schema Functions
description=Given a connection ID, returns a BIGINT UNSIGNED value representing the\nPerformance Schema thread ID assigned to the connection ID, or NULL if no\nthread ID exists for the connection ID
[QUARTER]
declaration=date
category=Date and Time Functions
description=Returns the quarter of the year for date, in the range 1 to 4
[QUOTE]
declaration=str
category=String Functions
description=Quotes a string to produce a result that can be used as a properly escaped\ndata value in an SQL statement
[RADIANS]
declaration=X
category=Numeric Functions
description=Returns the argument X, converted from degrees to radians
[RAND]
declaration=[N]
category=Numeric Functions
description=Returns a random floating-point value v in the range 0 <= v < 1
[RANDOM_BYTES]
declaration=len
category=Encryption Functions
description=This function returns a binary string of len random bytes generated using\nthe random number generator of the SSL library
[REGEXP_INSTR]
declaration=expr, pat[, pos[, occurrence[, return_option[,
match_type]]]]
category=String Functions
description=Returns the starting index of the substring of the string expr that matches\nthe regular expression specified by the pattern pat, 0 if there is no match
[REGEXP_LIKE]
declaration=expr, pat[, match_type]
category=String Functions
description=Returns 1 if the string expr matches the regular expression specified by\nthe pattern pat, 0 otherwise
[REGEXP_REPLACE]
declaration=expr, pat, repl[, pos[, occurrence[, match_type]]]
category=String Functions
description=Replaces occurrences in the string expr that match the regular expression\nspecified by the pattern pat with the replacement string repl, and returns\nthe resulting string
[REGEXP_SUBSTR]
declaration=expr, pat[, pos[, occurrence[, match_type]]]
category=String Functions
description=Returns the substring of the string expr that matches the regular\nexpression specified by the pattern pat, NULL if there is no match
[RELEASE_LOCK]
declaration=str
category=Locking Functions
description=Releases the lock named by the string str that was obtained with GET_LOCK()
[REVERSE]
declaration=str
category=String Functions
description=Returns the string str with the order of the characters reversed
[RIGHT]
declaration=str,len
category=String Functions
description=Returns the rightmost len characters from the string str, or NULL if any\nargument is NULL
[ROUND]
declaration=X
category=Numeric Functions
description=Rounds the argument X to D decimal places
[RPAD]
declaration=str,len,padstr
category=String Functions
description=Returns the string str, right-padded with the string padstr to a length of\nlen characters
[RTRIM]
declaration=str
category=String Functions
description=Returns the string str with trailing space characters removed
[SECOND]
declaration=time
category=Date and Time Functions
description=Returns the second for time, in the range 0 to 59
[SEC_TO_TIME]
declaration=seconds
category=Date and Time Functions
description=Returns the seconds argument, converted to hours, minutes, and seconds, as\na TIME value
[SHA1]
declaration=str
category=Encryption Functions
description=Calculates an SHA-1 160-bit checksum for the string, as described in RFC\n3174 (Secure Hash Algorithm)
[SHA2]
declaration=str, hash_length
category=Encryption Functions
description=Calculates the SHA-2 family of hash functions (SHA-224, SHA-256, SHA-384,\nand SHA-512)
[SIGN]
declaration=X
category=Numeric Functions
description=Returns the sign of the argument as -1, 0, or 1, depending on whether X is\nnegative, zero, or positive
[SIN]
declaration=X
category=Numeric Functions
description=Returns the sine of X, where X is given in radians
[SLEEP]
declaration=duration
category=Miscellaneous Functions
description=Sleeps (pauses) for the number of seconds given by the duration argument,\nthen returns 0
[SOUNDEX]
declaration=str
category=String Functions
description=Returns a soundex string from str
[SPACE]
declaration=N
category=String Functions
description=Returns a string consisting of N space characters
[SQRT]
declaration=X
category=Numeric Functions
description=Returns the square root of a nonnegative number X
[STATEMENT_DIGEST]
declaration=statement
category=Encryption Functions
description=Given an SQL statement as a string, returns the statement digest hash value\nas a string in the connection character set, or NULL if the argument is\nNULL
[STATEMENT_DIGEST_TEXT]
declaration=statement
category=Encryption Functions
description=Given an SQL statement as a string, returns the normalized statement digest\nas a string in the connection character set, or NULL if the argument is\nNULL
[STD]
declaration=expr
category=Aggregate Functions and Modifiers
description=Returns the population standard deviation of expr
[STDDEV]
declaration=expr
category=Aggregate Functions and Modifiers
description=Returns the population standard deviation of expr
[STDDEV_POP]
declaration=expr
category=Aggregate Functions and Modifiers
description=Returns the population standard deviation of expr (the square root of\nVAR_POP())
[STDDEV_SAMP]
declaration=expr
category=Aggregate Functions and Modifiers
description=Returns the sample standard deviation of expr (the square root of\nVAR_SAMP()
[STRCMP]
declaration=expr1,expr2
category=String Functions
description=STRCMP() returns 0 if the strings are the same, -1 if the first argument is\nsmaller than the second according to the current sort order, and 1\notherwise
[STR_TO_DATE]
declaration=str,format
category=Date and Time Functions
description=This is the inverse of the DATE_FORMAT() function
[ST_AREA]
declaration={poly|mpoly}
category=Polygon Property Functions
description=Returns a double-precision number indicating the area of the Polygon or\nMultiPolygon argument, as measured in its spatial reference system
[ST_ASBINARY]
declaration=g [, options]
category=WKB Functions
description=Converts a value in internal geometry format to its WKB representation and\nreturns the binary result
[ST_ASGEOJSON]
declaration=g [, max_dec_digits [, options]]
category=MBR Functions
description=Generates a GeoJSON object from the geometry g
[ST_ASTEXT]
declaration=g [, options]
category=WKB Functions
description=Converts a value in internal geometry format to its WKT representation and\nreturns the string result
[ST_BUFFER]
declaration=g, d [, strategy1 [, strategy2 [, strategy3]]]
category=GeometryCollection Property Functions
description=Returns a geometry that represents all points whose distance from the\ngeometry value g is less than or equal to a distance of d
[ST_BUFFER_STRATEGY]
declaration=strategy [, points_per_circle]
category=GeometryCollection Property Functions
description=This function returns a strategy byte string for use with ST_Buffer() to\ninfluence buffer computation
[ST_CENTROID]
declaration={poly|mpoly}
category=Polygon Property Functions
description=Returns the mathematical centroid for the Polygon or MultiPolygon argument\nas a Point
[ST_COLLECT]
declaration=[DISTINCT] g
category=MBR Functions
description=Aggregates geometry values and returns a single geometry collection value
[ST_CONTAINS]
declaration=g1, g2
category=Geometry Relation Functions
description=Returns 1 or 0 to indicate whether g1 completely contains g2
[ST_CONVEXHULL]
declaration=g
category=GeometryCollection Property Functions
description=Returns a geometry that represents the convex hull of the geometry value g
[ST_CROSSES]
declaration=g1, g2
category=Geometry Relation Functions
description=Two geometries spatially cross if their spatial relation has the following\nproperties:  o Unless g1 and g2 are both of dimension 1: g1 crosses g2 if\nthe   interior of g2 has points in common with the interior of g1, but g2  \ndoes not cover the entire interior of g1
[ST_DIFFERENCE]
declaration=g1, g2
category=GeometryCollection Property Functions
description=Returns a geometry that represents the point set difference of the geometry\nvalues g1 and g2
[ST_DIMENSION]
declaration=g
category=Geometry Property Functions
description=Returns the inherent dimension of the geometry value g
[ST_DISJOINT]
declaration=g1, g2
category=Geometry Relation Functions
description=Returns 1 or 0 to indicate whether g1 is spatially disjoint from (does not\nintersect) g2
[ST_DISTANCE]
declaration=g1, g2 [, unit]
category=Geometry Relation Functions
description=Returns the distance between g1 and g2, measured in the length unit of the\nspatial reference system (SRS) of the geometry arguments, or in the unit of\nthe optional unit argument if that is specified
[ST_DISTANCE_SPHERE]
declaration=g1, g2 [, radius]
category=MBR Functions
description=Returns the mimimum spherical distance between Point or MultiPoint\narguments on a sphere, in meters
[ST_ENDPOINT]
declaration=ls
category=LineString Property Functions
description=Returns the Point that is the endpoint of the LineString value ls
[ST_ENVELOPE]
declaration=g
category=Geometry Property Functions
description=Returns the minimum bounding rectangle (MBR) for the geometry value g
[ST_EQUALS]
declaration=g1, g2
category=Geometry Relation Functions
description=Returns 1 or 0 to indicate whether g1 is spatially equal to g2
[ST_EXTERIORRING]
declaration=poly
category=Polygon Property Functions
description=Returns the exterior ring of the Polygon value poly as a LineString
[ST_FRECHETDISTANCE]
declaration=g1, g2 [, unit]
category=Geometry Relation Functions
description=Returns the discrete Fr├®chet distance between two geometries, reflecting\nhow similar the geometries are
[ST_GEOHASH]
declaration=longitude, latitude, max_length
category=MBR Functions
description=max_length)  Returns a geohash string in the connection character set and\ncollation
[ST_GEOMCOLLFROMTEXT]
declaration=wkt [, srid [, options]]
category=WKT Functions
description=ST_GeometryCollectionFromText(wkt [, srid [, options]]),\nST_GeomCollFromTxt(wkt [, srid [, options]])  Constructs a\nGeometryCollection value using its WKT representation and SRID
[ST_GEOMCOLLFROMWKB]
declaration=wkb [, srid [, options]]
category=WKB Functions
description=ST_GeometryCollectionFromWKB(wkb [, srid [, options]])  Constructs a\nGeometryCollection value using its WKB representation and SRID
[ST_GEOMETRYN]
declaration=gc, N
category=GeometryCollection Property Functions
description=Returns the N-th geometry in the GeometryCollection value gc
[ST_GEOMETRYTYPE]
declaration=g
category=Geometry Property Functions
description=Returns a binary string indicating the name of the geometry type of which\nthe geometry instance g is a member
[ST_GEOMFROMGEOJSON]
declaration=str [, options [, srid]]
category=MBR Functions
description=Parses a string str representing a GeoJSON object and returns a geometry
[ST_GEOMFROMTEXT]
declaration=wkt [, srid [, options]]
category=WKT Functions
description=srid [, options]])  Constructs a geometry value of any type using its WKT\nrepresentation and SRID
[ST_GEOMFROMWKB]
declaration=wkb [, srid [, options]]
category=WKB Functions
description=srid [, options]])  Constructs a geometry value of any type using its WKB\nrepresentation and SRID
[ST_HAUSDORFFDISTANCE]
declaration=g1, g2 [, unit]
category=Geometry Relation Functions
description=Returns the discrete Hausdorff distance between two geometries, reflecting\nhow similar the geometries are
[ST_INTERIORRINGN]
declaration=poly, N
category=Polygon Property Functions
description=Returns the N-th interior ring for the Polygon value poly as a LineString
[ST_INTERSECTION]
declaration=g1, g2
category=GeometryCollection Property Functions
description=Returns a geometry that represents the point set intersection of the\ngeometry values g1 and g2
[ST_INTERSECTS]
declaration=g1, g2
category=Geometry Relation Functions
description=Returns 1 or 0 to indicate whether g1 spatially intersects g2
[ST_ISCLOSED]
declaration=ls
category=LineString Property Functions
description=For a LineString value ls, ST_IsClosed() returns 1 if ls is closed (that\nis, its ST_StartPoint() and ST_EndPoint() values are the same)
[ST_ISEMPTY]
declaration=g
category=Geometry Property Functions
description=This function is a placeholder that returns 1 for an empty geometry\ncollection value or 0 otherwise
[ST_ISSIMPLE]
declaration=g
category=Geometry Property Functions
description=Returns 1 if the geometry value g is simple according to the ISO SQL/MM\nPart 3: Spatial standard
[ST_ISVALID]
declaration=g
category=MBR Functions
description=Returns 1 if the argument is geometrically valid, 0 if the argument is not\ngeometrically valid
[ST_LATFROMGEOHASH]
declaration=geohash_str
category=MBR Functions
description=Returns the latitude from a geohash string value, as a double-precision\nnumber in the range [ÔêÆ90, 90]
[ST_LATITUDE]
declaration=p [, new_latitude_val]
category=Point Property Functions
description=With a single argument representing a valid Point object p that has a\ngeographic spatial reference system (SRS), ST_Latitude() returns the\nlatitude value of p as a double-precision number
[ST_LENGTH]
declaration=ls [, unit]
category=LineString Property Functions
description=Returns a double-precision number indicating the length of the LineString\nor MultiLineString value ls in its associated spatial reference system
[ST_LINEFROMTEXT]
declaration=wkt [, srid [, options]]
category=WKT Functions
description=srid [, options]])  Constructs a LineString value using its WKT\nrepresentation and SRID
[ST_LINEFROMWKB]
declaration=wkb [, srid [, options]]
category=WKB Functions
description=srid [, options]])  Constructs a LineString value using its WKB\nrepresentation and SRID
[ST_LINEINTERPOLATEPOINT]
declaration=ls, fractional_distance
category=GeometryCollection Property Functions
description=This function takes a LineString geometry and a fractional distance in the\nrange [0
[ST_LINEINTERPOLATEPOINTS]
declaration=ls, fractional_distance
category=GeometryCollection Property Functions
description=This function takes a LineString geometry and a fractional distance in the\nrange (0
[ST_LONGFROMGEOHASH]
declaration=geohash_str
category=MBR Functions
description=Returns the longitude from a geohash string value, as a double-precision\nnumber in the range [ÔêÆ180, 180]
[ST_LONGITUDE]
declaration=p [, new_longitude_val]
category=Point Property Functions
description=With a single argument representing a valid Point object p that has a\ngeographic spatial reference system (SRS), ST_Longitude() returns the\nlongitude value of p as a double-precision number
[ST_MAKEENVELOPE]
declaration=pt1, pt2
category=MBR Functions
description=Returns the rectangle that forms the envelope around two points, as a\nPoint, LineString, or Polygon
[ST_MLINEFROMTEXT]
declaration=wkt [, srid [, options]]
category=WKT Functions
description=ST_MultiLineStringFromText(wkt [, srid [, options]])  Constructs a\nMultiLineString value using its WKT representation and SRID
[ST_MLINEFROMWKB]
declaration=wkb [, srid [, options]]
category=WKB Functions
description=ST_MultiLineStringFromWKB(wkb [, srid [, options]])  Constructs a\nMultiLineString value using its WKB representation and SRID
[ST_MPOINTFROMTEXT]
declaration=wkt [, srid [, options]]
category=WKT Functions
description=[, srid [, options]])  Constructs a MultiPoint value using its WKT\nrepresentation and SRID
[ST_MPOINTFROMWKB]
declaration=wkb [, srid [, options]]
category=WKB Functions
description=srid [, options]])  Constructs a MultiPoint value using its WKB\nrepresentation and SRID
[ST_MPOLYFROMTEXT]
declaration=wkt [, srid [, options]]
category=WKT Functions
description=[, srid [, options]])  Constructs a MultiPolygon value using its WKT\nrepresentation and SRID
[ST_MPOLYFROMWKB]
declaration=wkb [, srid [, options]]
category=WKB Functions
description=[, srid [, options]])  Constructs a MultiPolygon value using its WKB\nrepresentation and SRID
[ST_NUMGEOMETRIES]
declaration=gc
category=GeometryCollection Property Functions
description=Returns the number of geometries in the GeometryCollection value gc
[ST_NUMPOINTS]
declaration=ls
category=LineString Property Functions
description=Returns the number of Point objects in the LineString value ls
[ST_OVERLAPS]
declaration=g1, g2
category=Geometry Relation Functions
description=Two geometries spatially overlap if they intersect and their intersection\nresults in a geometry of the same dimension but not equal to either of the\ngiven geometries
[ST_POINTATDISTANCE]
declaration=ls, distance
category=GeometryCollection Property Functions
description=This function takes a LineString geometry and a distance in the range [0
[ST_POINTFROMGEOHASH]
declaration=geohash_str, srid
category=MBR Functions
description=Returns a POINT value containing the decoded geohash value, given a geohash\nstring value
[ST_POINTFROMTEXT]
declaration=wkt [, srid [, options]]
category=WKT Functions
description=Constructs a Point value using its WKT representation and SRID
[ST_POINTFROMWKB]
declaration=wkb [, srid [, options]]
category=WKB Functions
description=Constructs a Point value using its WKB representation and SRID
[ST_POINTN]
declaration=ls, N
category=LineString Property Functions
description=Returns the N-th Point in the Linestring value ls
[ST_POLYFROMTEXT]
declaration=wkt [, srid [, options]]
category=WKT Functions
description=srid [, options]])  Constructs a Polygon value using its WKT representation\nand SRID
[ST_POLYFROMWKB]
declaration=wkb [, srid [, options]]
category=WKB Functions
description=[, options]])  Constructs a Polygon value using its WKB representation and\nSRID
[ST_SIMPLIFY]
declaration=g, max_distance
category=MBR Functions
description=Simplifies a geometry using the Douglas-Peucker algorithm and returns a\nsimplified value of the same type
[ST_SRID]
declaration=g [, srid]
category=Geometry Property Functions
description=With a single argument representing a valid geometry object g, ST_SRID()\nreturns an integer indicating the ID of the spatial reference system (SRS)\nassociated with g
[ST_STARTPOINT]
declaration=ls
category=LineString Property Functions
description=Returns the Point that is the start point of the LineString value ls
[ST_SWAPXY]
declaration=g
category=WKB Functions
description=Accepts an argument in internal geometry format, swaps the X and Y values\nof each coordinate pair within the geometry, and returns the result
[ST_SYMDIFFERENCE]
declaration=g1, g2
category=GeometryCollection Property Functions
description=Returns a geometry that represents the point set symmetric difference of\nthe geometry values g1 and g2, which is defined as:  g1 symdifference g2 :=\n(g1 union g2) difference (g1 intersection g2)  Or, in function call\nnotation:  ST_SymDifference(g1, g2) = ST_Difference(ST_Union(g1, g2),\nST_Intersection(g1, g2))  ST_SymDifference() handles its arguments as\ndescribed in the introduction to this section
[ST_TOUCHES]
declaration=g1, g2
category=Geometry Relation Functions
description=Two geometries spatially touch if their interiors do not intersect, but the\nboundary of one of the geometries intersects either the boundary or the\ninterior of the other
[ST_TRANSFORM]
declaration=g, target_srid
category=GeometryCollection Property Functions
description=Transforms a geometry from one spatial reference system (SRS) to another
[ST_UNION]
declaration=g1, g2
category=GeometryCollection Property Functions
description=Returns a geometry that represents the point set union of the geometry\nvalues g1 and g2
[ST_VALIDATE]
declaration=g
category=MBR Functions
description=Validates a geometry according to the OGC specification
[ST_WITHIN]
declaration=g1, g2
category=Geometry Relation Functions
description=Returns 1 or 0 to indicate whether g1 is spatially within g2
[ST_X]
declaration=p [, new_x_val]
category=Point Property Functions
description=With a single argument representing a valid Point object p, ST_X() returns\nthe X-coordinate value of p as a double-precision number
[ST_Y]
declaration=p [, new_y_val]
category=Point Property Functions
description=With a single argument representing a valid Point object p, ST_Y() returns\nthe Y-coordinate value of p as a double-precision number
[SUBDATE]
declaration=date,INTERVAL expr unit
category=Date and Time Functions
description=When invoked with the INTERVAL form of the second argument, SUBDATE() is a\nsynonym for DATE_SUB()
[SUBSTR]
declaration=str,pos
category=String Functions
description=FROM pos FOR len)  SUBSTR() is a synonym for SUBSTRING()
[SUBSTRING]
declaration=str,pos
category=String Functions
description=SUBSTRING(str FROM pos FOR len)  The forms without a len argument return a\nsubstring from string str starting at position pos
[SUBSTRING_INDEX]
declaration=str,delim,count
category=String Functions
description=Returns the substring from string str before count occurrences of the\ndelimiter delim
[SUBTIME]
declaration=expr1,expr2
category=Date and Time Functions
description=SUBTIME() returns expr1 ÔêÆ expr2 expressed as a value in the same format\nas expr1
[SUM]
declaration=[DISTINCT] expr
category=Aggregate Functions and Modifiers
description=Returns the sum of expr
[SYSDATE]
declaration=[fsp]
category=Date and Time Functions
description=Returns the current date and time as a value in 'YYYY-MM-DD hh:mm:ss' or\nYYYYMMDDhhmmss format, depending on whether the function is used in string\nor numeric context
[TAN]
declaration=X
category=Numeric Functions
description=Returns the tangent of X, where X is given in radians
[TIMEDIFF]
declaration=expr1,expr2
category=Date and Time Functions
description=TIMEDIFF() returns expr1 ÔêÆ expr2 expressed as a time value
[TIMESTAMPADD]
declaration=unit,interval,datetime_expr
category=Date and Time Functions
description=Adds the integer expression interval to the date or datetime expression\ndatetime_expr
[TIMESTAMPDIFF]
declaration=unit,datetime_expr1,datetime_expr2
category=Date and Time Functions
description=Returns datetime_expr2 - datetime_expr1, where datetime_expr1 and\ndatetime_expr2 are date or datetime expressions
[TIME_FORMAT]
declaration=time,format
category=Date and Time Functions
description=This is used like the DATE_FORMAT() function, but the format string may\ncontain format specifiers only for hours, minutes, seconds, and\nmicroseconds
[TIME_TO_SEC]
declaration=time
category=Date and Time Functions
description=Returns the time argument, converted to seconds
[TO_BASE64]
declaration=str
category=String Functions
description=Converts the string argument to base-64 encoded form and returns the result\nas a character string with the connection character set and collation
[TO_DAYS]
declaration=date
category=Date and Time Functions
description=Given a date date, returns a day number (the number of days since year 0)
[TO_SECONDS]
declaration=expr
category=Date and Time Functions
description=Given a date or datetime expr, returns the number of seconds since the year\n0
[TRIM]
declaration=[{BOTH | LEADING | TRAILING} [remstr] FROM] str
category=String Functions
description=FROM] str)  Returns the string str with all remstr prefixes or suffixes\nremoved
[TRUNCATE]
declaration=X,D
category=Numeric Functions
description=Returns the number X, truncated to D decimal places
[UCASE]
declaration=str
category=String Functions
description=UCASE() is a synonym for UPPER()
[UNCOMPRESS]
declaration=string_to_uncompress
category=Encryption Functions
description=Uncompresses a string compressed by the COMPRESS() function
[UNCOMPRESSED_LENGTH]
declaration=compressed_string
category=Encryption Functions
description=Returns the length that the compressed string had before being compressed
[UNHEX]
declaration=str
category=String Functions
description=For a string argument str, UNHEX(str) interprets each pair of characters in\nthe argument as a hexadecimal number and converts it to the byte\nrepresented by the number
[UNIX_TIMESTAMP]
declaration=[date]
category=Date and Time Functions
description=If UNIX_TIMESTAMP() is called with no date argument, it returns a Unix\ntimestamp representing seconds since '1970-01-01 00:00:00' UTC
[UPDATEXML]
declaration=xml_target, xpath_expr, new_xml
category=XML
description=This function replaces a single portion of a given fragment of XML markup\nxml_target with a new XML fragment new_xml, and then returns the changed\nXML
[UPPER]
declaration=str
category=String Functions
description=Returns the string str with all characters changed to uppercase according\nto the current character set mapping
[UUID_TO_BIN]
declaration=string_uuid
category=Miscellaneous Functions
description=Converts a string UUID to a binary UUID and returns the result
[VALIDATE_PASSWORD_STRENGTH]
declaration=str
category=Encryption Functions
description=Given an argument representing a plaintext password, this function returns\nan integer to indicate how strong the password is
[VALUES]
declaration=col_name
category=Miscellaneous Functions
description=In an INSERT 
[VARBINARY]
declaration=M
category=Data Types
description=The VARBINARY type is similar to the VARCHAR type, but stores binary byte\nstrings rather than nonbinary character strings
[VARIANCE]
declaration=expr
category=Aggregate Functions and Modifiers
description=Returns the population standard variance of expr
[VAR_POP]
declaration=expr
category=Aggregate Functions and Modifiers
description=Returns the population standard variance of expr
[VAR_SAMP]
declaration=expr
category=Aggregate Functions and Modifiers
description=Returns the sample variance of expr
[WAIT_FOR_EXECUTED_GTID_SET]
declaration=gtid_set[, timeout]
category=GTID
description=Wait until the server has applied all of the transactions whose global\ntransaction identifiers are contained in gtid_set; that is, until the\ncondition GTID_SUBSET(gtid_subset, @@GLOBAL
[WAIT_UNTIL_SQL_THREAD_AFTER_GTIDS]
declaration=gtid_set[, timeout][,channel]
category=GTID
description=WAIT_UNTIL_SQL_THREAD_AFTER_GTIDS() is deprecated
[WEEK]
declaration=date[,mode]
category=Date and Time Functions
description=This function returns the week number for date
[WEEKDAY]
declaration=date
category=Date and Time Functions
description=Returns the weekday index for date (0 = Monday, 1 = Tuesday, 
[WEEKOFYEAR]
declaration=date
category=Date and Time Functions
description=Returns the calendar week of the date as a number in the range from 1 to 53
[WEIGHT_STRING]
declaration=str [AS {CHAR|BINARY}(N)] [flags]
category=String Functions
description=This function returns the weight string for the input string
[YEAR]
declaration=date
category=Date and Time Functions
description=Returns the year for date, in the range 1000 to 9999, or 0 for the "zero"\ndate
[YEARWEEK]
declaration=date
category=Date and Time Functions
description=Returns year and week for a date

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