导读:1.mysql 某一列中所有值的出现次数 SELECT VPDM,count(vpdm) FROM ipos_qtlsd GROUP BY VPDM ;...
1.mysql 某一列中所有值的出现次数
SELECT VPDM,count(vpdm) FROM ipos_qtlsd GROUP BY VPDM ;
阅读量:194544
阅读量:193736
阅读量:190109
阅读量:101744
阅读量:62517
阅读量:23751