mysql functions actions purpose is return the function definition. you try below mention these functions: ASCII, CHARLENGTH, CHARACTERLENGTH, CONCAT, CONCATWS, FIELD, FINDINSET, FORMAT, INSERT, INSTR, LCASE, LEFT, LENGTH, LOCATE, LOWER, LPAD, LTRIM, MID, POSITION, REPEAT, REPLACE, REVERSE, RIGHT, RPAD, RTRIM, SPACE, STRCMP, SUBSTR, SUBSTRING, SUBSTRINGINDEX, TRIM, UCASE, UPPER, ABS, ACOS, ASIN, ATAN, ATAN2, AVG, CEIL, CEILING, COS, COT, COUNT, DEGREES, DIV, EXP, FLOOR, GREATEST, LEAST, LN, LOG, LOG10, LOG2, MAX, MIN, MOD, PI, POW, POWER, RADIANS, RAND, ROUND, SIGN, SIN, SQRT, SUM, TAN, TRUNCATE, ADDDATE, ADDTIME, CURDATE, CURRENTDATE, CURRENTTIME, CURRENTTIMESTAMP, CURTIME, DATE, DATEDIFF, DATEADD, DATEFORMAT, DATESUB, DAY, DAYNAME, DAYOFMONTH, DAYOFWEEK, DAYOFYEAR, EXTRACT, FROMDAYS, HOUR, LASTDAY, LOCALTIME, LOCALTIMESTAMP, MAKEDATE, MAKETIME, MICROSECOND, MINUTE, MONTH, MONTHNAME, NOW, PERIODADD, PERIODDIFF, QUARTER, SECOND, SECTOTIME, STRTODATE, SUBDATE, SUBTIME, SYSDATE, TIME, TIMEFORMAT, TIMETOSEC, TIMEDIFF, TIMESTAMP, TODAYS, WEEK, WEEKDAY, WEEKOFYEAR, YEAR, YEARWEEK, BIN, BINARY, CASE, CAST, COALESCE, CONNECTIONID, CONV, CONVERT, CURRENTUSER, DATABASE, IF, IFNULL, ISNULL, LASTINSERTID, NULLIF, SESSION USER, SYSTEM USER, USER, VERSION,