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Friday, January 11, 2013
Delete rows in one table from join two tables in MySQL
In MYSQL, we can only select one table from multi tables:
SELECT tableA.* FROM tableA A, tableB B WHERE A.id=B.id AND R.member_id AND B.id=1;
If we use
DELETE FROM tableA A, tableB B WHERE A.id=B.id AND R.member_id AND B.id=1;
This will delete the rows both in tableA and tableB which satisfy the conditions.
So if we only want to delete the rows in tableA, not in tableB?
We can use the following MySQl query
DELETE FROM tableA USING tableA, tableB WHERE tableA.id=tableB.id AND tableB.id=1;
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