function

const (
	FuncCastSign     = "CAST_SIGNED"
	FuncCastUnsigned = "CAST_UNSIGNED"
)

const (
	FuncSHA1 = "SHA1"
	FuncSHA  = "SHA"
)

const FuncAbs = "ABS"

const FuncAcos = "ACOS"

const FuncAsin = "ASIN"

const FuncCastChar = "CAST_CHAR"

const FuncCastCharset = "CAST_CHARSET"

const FuncCastDate = "CAST_DATE"

const FuncCastDatetime = "CAST_DATETIME"

const FuncCastDecimal = "CAST_DECIMAL"

const FuncCastNchar = "CAST_NCHAR"

const FuncCastTime = "CAST_TIME"

const FuncCeil = "CEIL"

const FuncCharLength = "CHAR_LENGTH"

const FuncConcat = "CONCAT"

const FuncConcatWS = "CONCAT_WS"

const FuncCos = "COS"

const FuncCumeDist = "CUME_DIST"

const FuncDenseRank = "DENSE_RANK"

const FuncExp = "EXP"

const FuncFirstValue = "FIRST_VALUE"

const FuncFloor = "FLOOR"

const FuncFormatBytes = "FORMAT_BYTES"

const FuncIf = "IF"

const FuncIfNull = "IFNULL"

const FuncLag = "LAG"

const FuncLastValue = "LAST_VALUE"

const FuncLead = "LEAD"

const FuncLeft = "LEFT"

const FuncLength = "LENGTH"

const FuncLower = "LOWER"

const FuncLpad = "LPAD"

const FuncLtrim = "LTRIM"

const FuncMd5 = "MD5"

const FuncMod = "MOD"

const FuncNthValue = "NTH_VALUE"

const FuncNtile = "NTILE"

const FuncPercentRank = "PERCENT_RANK"

const FuncPi = "PI"

const FuncPower = "POWER"

const FuncRand = "RAND"

const FuncRank = "RANK"

const FuncRepeat = "REPEAT"

const FuncReplace = "REPLACE"

const FuncReverse = "REVERSE"

const FuncRight = "RIGHT"

const FuncRound = "ROUND"

const FuncRowNumber = "ROW_NUMBER"

const FuncRpad = "RPAD"

const FuncRtrim = "RTRIM"

const FuncSin = "SIN"

const FuncSpace = "SPACE"

const FuncSqrt = "SQRT"

const FuncStrcmp = "STRCMP"

const FuncSubstring = "SUBSTRING"

const FuncTan = "TAN"

const FuncTruncate = "TRUNCATE"

const FuncUpper = "UPPER"