0
点赞
收藏
分享

微信扫一扫

mysql查询sum出来数据是decimal,转换成int

mysql查询count数据是decimal,用python转换json格式的时候会报错,在查询的时候处理成无符号型,用cast

查询出来countNum是Decimal 
SELECT gid, SUM(number) countNum FROM `gift_tb` WHERE tid="1" GROUP BY gid
 
转换成无符号型
SELECT gid, CAST(SUM(number) AS SIGNED ) AS countNum FROM `gift_tb` WHERE tid="1" GROUP BY gid
 


举报

相关推荐

0 条评论