MYSQL常用函数
摘要:1.Mysql字符串字段判断是否包含某个字符串FIND_IN_SET SELECT * FROM qr_usercontacts WHERE EXISTS(SELECT touristorder_ref_userids FROM qr_touristorder WHERE touristorder_
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posted @ 2016-12-09 16:38
posted @ 2016-12-09 16:38
posted @ 2016-12-06 17:44