Mat*_*hew 2 mysql
鉴于查询'SELECT foo FROM bar WHERE a = x AND b = y OR c = z',它如何解析此查询？
'SELECT foo FROM bar WHERE a = x AND b = y OR c = z'
(a = x AND b = y) OR c = z？ a = x AND (b = y OR c = z)？
(a = x AND b = y) OR c = z
a = x AND (b = y OR c = z)
这是一个简单的例子,但是如果你正在混合和匹配AND/OR甚至更多的搜索条件呢？
bri*_*zil 5
(a = x AND b = y)或c = z
http://dev.mysql.com/doc/refman/5.0/en/operator-precedence.html
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