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MYSQL AND OR条件有关问题

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2016-06-13 12:16:361006瀏覽

MYSQL AND OR条件问题

<br />SELECT id,name		<br />FROM test <br />WHERE type_1 = 1 OR type_2 = 1 AND id = 1<br />

这样会印出全部,无视了id=1这个条件,要怎么改才对呢?
------解决思路----------------------
SELECT id,name       <br />FROM test <br />WHERE (type_1 = 1 OR type_2 = 1) AND id = 1

SELECT id,name       <br />FROM test <br />WHERE type_1 = 1 OR (type_2 = 1 AND id = 1)

SELECT id,name       <br />FROM test <br />WHERE (type_1 = 1 OR type_2 = 1) AND id = 1

要看你的实际需要

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