Question

我将原始问题更改为更具体。

运行此查询后，我想要输出两个参数。这两个参数需要不同的标准。

为此，我建立了这种查询：

SELECT m.count, ytd.count 
FROM ( 
   SELECT COUNT( id ) count 
   FROM table 
   WHERE date BETWEEN BETWEEN '2010-06-01' AND '2010-06-30'
) m, (SELECT COUNT( id )count 
      FROM table 
      WHERE date BETWEEN BETWEEN '2010-01-01' AND '2010-06-30'
) ytd

这种查询返回计数并且运行良好。但是现在我想再挖一点，然后通过dep来看这两个参数。

现在我得到了总数：

Param1  Param2
  39      85

我希望得到这张表：

Dep Param1 Param2
  1    5      7
  2    34     78

依旧......

希望现在更清楚。

谢谢！

Answer 1

    SELECT m.dep, m.count, ytd.count 
    FROM ( 
          SELECT COUNT( id ) count, Dep 
          FROM table 
          WHERE date BETWEEN BETWEEN '2010-06-01' AND '2010-06-30'
          group by dep
    ) m, 

Join

(   SELECT COUNT( id )count, dep 
          FROM table 
          WHERE date BETWEEN BETWEEN '2010-01-01' AND '2010-06-30'
          group by dep
    ) ytd

ON ytb.dep=m.dep

感谢您的帮助

两个带有一个公共列的子查询

1 个答案: