python中l(wèi)eft函數(shù)怎么用?
left(ARG,LENGTH)left函數(shù)返回ARG最左邊的LENGTH個(gè)字符串,ARG可以是char或者binary string
例如:select left(name,2) from T1 返回結(jié)果是na
python中l(wèi)eft函數(shù)怎么用?
left(ARG,LENGTH)left函數(shù)返回ARG最左邊的LENGTH個(gè)字符串,ARG可以是char或者binary string
例如:select left(name,2) from T1 返回結(jié)果是na