Question

在下面的代码中，第4行正在创建错误＆＃34; AND＆＃39; user＆＃39; IN（SELECT＆＃39; user_s＆＃39; FROM＆＃39; sex＆＃39; WHERE sex =＆＃39; $ iaminterestedin＆＃39;）＆＃34;。基本上我试图只包括性别表的user_s列中的用户为sex column = $ iaminterestedin。然而，这产生了一个错误。 WHERE ... NOT IN查询工作正常但是有什么东西如WHERE ... IN查询？

$result = queryMysql("SELECT `user` FROM `members`
                WHERE `user` NOT IN(SELECT `ilike` FROM `likeprofile` WHERE user_l='$user')
                AND `user` NOT IN(SELECT `dislike` FROM `dislikeprofile` WHERE user_d='$user')
                AND 'user' IN(SELECT 'user_s' FROM 'gender' WHERE sex='$iaminterestedin')   
                AND `user` <> '$user'");

Answer 1

表名应该用反引号括起来而不是引号

AND `user` IN(SELECT `user_s`
    ^----^           ^------^ use backticks ` instead of quotes '

Answer 2

试试这个：

  $result = queryMysql("SELECT `user` FROM `members`
            WHERE `user` NOT IN(SELECT `ilike` FROM `likeprofile` WHERE user_l='" . $user . "')
            AND `user` NOT IN(SELECT `dislike` FROM `dislikeprofile` WHERE user_d='" . $user . "')
            AND `user` IN(SELECT `user_s` FROM `gender` WHERE sex='" . $iaminterestedin . "')   
            AND `user` <> '" . $user . "'");

你应该使用反引号，而不是qoutes。您还需要结束字符串以输入变量。

Answer 3

            AND 'user' IN(SELECT 'user_s' FROM 'gender' WHERE sex='$iaminterestedin')   
                ^----^--- wrong quotes. Use ` instead

MySQL WHERE ...在查询中

3 个答案: