相关疑难解决方法(0)

我正在构建一个带有GROUP BY子句的查询,该子句需要能够仅根据某个条件计算记录(例如,只计算某个列值等于1的记录).

SELECT  UID, 
        COUNT(UID) AS TotalRecords, 
        SUM(ContractDollars) AS ContractDollars,
        (COUNTIF(MyColumn, 1) / COUNT(UID) * 100) -- Get the average of all records that are 1
FROM    dbo.AD_CurrentView
GROUP BY UID
HAVING  SUM(ContractDollars) >= 500000

该COUNTIF()行明显失败,因为没有调用本机SQL函数COUNTIF,但这里的想法是确定MyColumn值为"1"的所有行的百分比.

有关如何在MS SQL 2005环境中正确实现它的任何想法？

我有一张桌子tbl_LEDGER

+-----------+--------+-----+
| AccountId | GlCode | Amt |
+-----------+--------+-----+
| LAS00001  | INTRAC | 100 |
| LAS00002  | INTRAC | 150 |
| LAS00001  | INTLAS | 200 |
+-----------+--------+-----+

期望的结果:

+-----------+------------+-----------+
| AccountId | intractamt | intlasAmt |
+-----------+------------+-----------+
| LAS00001  |        100 |       200 |
| LAS00002  |        150 |         0 |
+-----------+------------+-----------+

这是我的工作查询:

select accountid,sum(amt) intracamt,  (select SUM(amt)  from tbl_LEDGER 
where   GLCode='intlas' and AccountID=intrac.AccountID ) intlasamt 
from tbl_LEDGER intrac 
where GLCode='intrac'    group by AccountID …