MySQL防止重复插入记录SQL
摘要：
INSERT INTO sysuser(UserName,PASSWORD,CreateTime)SELECT '1231','123',NOW() FROM DUAL WHERE NOT EXISTS(SELECT * FROM sysuser WHERE UserName='1231') DUA 阅读全文
posted @ 2017-01-12 11:00 Jade_K 阅读(222) 评论(0) 推荐(0)
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