SQL Delete: 根据多个条件删除数据

简单删除

DELETE TABLE_NAME WHERE KEY = 1;
DELETE TABLE_NAME WHERE KEY IN (1, 2, 3);
DELETE TABLE_NAME WHERE KEY IN (SELECT 1 FROM DUAL);

多条件删除

1.EXISTS

DELETE FROM TABLE_NAME ORIGIN 
WHERE EXISTS (
    SELECT * FROM (
        SELECT KEY1, KEY2 FROM TABLE_NAME GROUP BY KEY1, KEY2
    ) SOURCE
    WHERE ORIGIN.KEY1 = SOURCE.KEY1 AND ORIGIN.KEY2 = SOURCE.KEY2
);

2.IN

DELETE FROM TABLE_NAME
WHERE (KEY1, KEY2) IN (
    SELECT KEY1, KEY2 FROM TABLE_NAME 
    GROUP BY KEY1, KEY2
);

 

PS

1.NULL 只能被 IS 匹配

 

 

 

Reference

SQL DELETE语句：删除数据