mysql怎么删除整张表
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发布时间：2022-04-23 02:01
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热心网友
时间：2022-05-03 14:02
DELETE t1 FROM t1，t2 WHERE t1.id=t2.id 或DELETE FROM t1 USING t1，t2 WHERE t1.id=t2.id
2、从MySQL数据表t1里在数据表t2里没有匹配的记录查找出来并删除掉
DELETE t1 FROM t1 LEFT JOIN T2 ON t1.id=t2.id WHERE t2.id IS NULL 或
DELETE FROM t1，USING t1 LEFT JOIN T2 ON t1.id=t2.id WHERE t2.id IS NULL
3、从两个表中找出相同记录的数据并把两个表中的数据都删除掉
DELETE t1，t2 from t1 LEFT JOIN t2 ON t1.id=t2.id WHERE t1.id=25
