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Home > Backend Development > PHP Tutorial > mysql_query()中的sql话语好像不能带括号

mysql_query()中的sql话语好像不能带括号

WBOY
Release： 2016-06-13 12:46:20
Original
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mysql_query()中的sql语句好像不能带括号。
$rs= mysql_query("select * from cxjb2 where nam ".$_POST[select3]." $_POST[nam] and cat ".$_POST[select0]." $_POST[cat] and sha ".$_POST[select1]." $_POST[sha] and pri is NULL  or nam ".$_POST[select3]." $_POST[nam] and cat ".$_POST[select0]." $_POST[cat] and sha ".$_POST[select1]." $_POST[sha]");

以上语句可以执行。

 $rs= mysql_query("(select * from cxjb2 where nam ".$_POST[select3]." $_POST[nam] and cat ".$_POST[select0]." $_POST[cat] and sha ".$_POST[select1]." $_POST[sha]) and (pri is NULL  or pri is NOT NULL)");

同样的逻辑关系转换成此语句时便不能成功执行了。

请问各位大大指教




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