PHP MySQL,UNION TABLES

时间:2011-08-22 10:13:46

标签: php mysql union

我有这样的查询:

SELECT * FROM job WHERE status!=2 AND status!=3
UNION SELECT * FROM emp WHERE status!=2 AND status!=3
ORDER BY (id/popularity) DESC LIMIT {$from},$vpc

它运作完美,但现在我无法确定记录的来源...... 有没有办法确定从哪个表开始记录?

1 个答案:

答案 0 :(得分:8)

我想你可以试试这个:

      SELECT *, 'job' as origin 
        FROM job 
       WHERE status!=2 
         AND status!=3
UNION SELECT *, 'emp' as origin
        FROM emp 
       WHERE status!=2 
         AND status!=3
    ORDER BY (id/popularity) DESC 
       LIMIT {$from},$vpc

这应该在结果中添加一个名为origin的字段,其中包含您选择的名称以标识该表。