我要做的是对同一列使用多个CASE WHEN条件。
下面是我的查询代码:
SELECT Url='',
p.ArtNo,
p.[Description],
p.Specification,
CASE
WHEN 1 = 1 or 1 = 1
THEN 1
ELSE 0
END as Qty,
p.NetPrice,
[Status] = 0
FROM Product p (NOLOCK)
然而，我想做的是对同一列“qty”使用多个WHEN。
如下代码所示:
IF
// CODE
ELSE IF
// CODE
ELSE IF
// CODE
ELSE
// CODE
当前回答
综合所有条件
select a.* from tbl_Company a
where a.Company_ID NOT IN (1,2)
AND (
(0 =
CASE WHEN (@Fromdate = '' or @Todate='')
THEN 0
ELSE 1
END
) -- if 0=0 true , if 0=1 fails (filter only when the fromdate and todate is present)
OR
(a.Created_Date between @Fromdate and @Todate )
)
其他回答
只要用这个，当他们是类的时候，你必须用更多。
SELECT Url='',
p.ArtNo,
p.[Description],
p.Specification,
CASE
WHEN 1 = 1 or 1 = 1
THEN 1
WHEN 2 = 2
THEN 2
WHEN 3 = 3
THEN 3
ELSE 0
END as Qty,
p.NetPrice,
[Status] = 0
FROM Product p (NOLOCK)
这是对一条语句执行不同测试的有效方法
select
case colour_txt
when 'red' then 5
when 'green' then 4
when 'orange' then 3
else 0
end as Pass_Flag
这只适用于平等比较!
您将从这段代码中得到一个概念。
SELECT
(CASE
WHEN RIGHT((LEFT(POSID,5)),4) LIKE '1001' THEN 'DM'
WHEN RIGHT((LEFT(POSID,5)),4) LIKE '1002' THEN 'GS'
WHEN RIGHT((LEFT(POSID,5)),4) LIKE '1003' THEN 'MB'
WHEN RIGHT((LEFT(POSID,5)),4) LIKE '1004' THEN 'MP'
WHEN RIGHT((LEFT(POSID,5)),4) LIKE '1005' THEN 'PL'
WHEN RIGHT((LEFT(POSID,5)),4) LIKE '1008' THEN 'DM-27'
WHEN RIGHT((LEFT(POSID,5)),4) LIKE '1011' THEN 'PB'
WHEN RIGHT((LEFT(POSID,5)),4) LIKE '1012' THEN 'UT-2'
WHEN RIGHT((LEFT(POSID,5)),4) LIKE '1013' THEN 'JGC'
WHEN RIGHT((LEFT(POSID,5)),4) LIKE '1014' THEN 'SB'
WHEN RIGHT((LEFT(POSID,5)),4) LIKE '1015' THEN 'IR'
WHEN RIGHT((LEFT(POSID,5)),4) LIKE '1016' THEN 'UT-3'
WHEN RIGHT((LEFT(POSID,5)),4) LIKE '1017' THEN 'UT-4'
WHEN RIGHT((LEFT(POSID,5)),4) LIKE '1019' THEN 'KR'
WHEN RIGHT((LEFT(POSID,5)),4) LIKE '1020' THEN 'SYB-SB'
WHEN RIGHT((LEFT(POSID,5)),4) LIKE '1021' THEN 'GR'
WHEN RIGHT((LEFT(POSID,5)),4) LIKE '1022' THEN 'SYB-KP'
WHEN RIGHT((LEFT(POSID,5)),4) LIKE '1026' THEN 'BNS'
ELSE ''
END) AS OUTLET
FROM matrixcrm.Transact
就像这样，两个条件两列
SELECT ITEMSREQ.ITEM AS ITEM,
ITEMSREQ.CANTIDAD AS CANTIDAD,
(CASE WHEN ITEMSREQ.ITEMAPROBADO=1 THEN 'APROBADO'
WHEN ITEMSREQ.ITEMAPROBADO=0 THEN 'NO APROBADO'
END) AS ITEMS,
(CASE
WHEN ITEMSREQ.ITEMAPROBADO = 0
THEN CASE WHEN REQUISICIONES.RECIBIDA IS NULL THEN 'ITEM NO APROBADO PARA ENTREGA' END
WHEN ITEMSREQ.ITEMAPROBADO = 1
THEN CASE WHEN REQUISICIONES.RECIBIDA IS NULL THEN 'ITEM AUN NO RECIBIDO'
WHEN REQUISICIONES.RECIBIDA=1 THEN 'RECIBIDO'
WHEN REQUISICIONES.RECIBIDA=0 THEN 'NO RECIBIDO'
END
END)
AS RECIBIDA
FROM ITEMSREQ
INNER JOIN REQUISICIONES ON
ITEMSREQ.CNSREQ = REQUISICIONES.CNSREQ
综合所有条件
select a.* from tbl_Company a
where a.Company_ID NOT IN (1,2)
AND (
(0 =
CASE WHEN (@Fromdate = '' or @Todate='')
THEN 0
ELSE 1
END
) -- if 0=0 true , if 0=1 fails (filter only when the fromdate and todate is present)
OR
(a.Created_Date between @Fromdate and @Todate )
)
