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
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
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)
case when first_condition
then first_condition_result_true
else
case when second_condition
then second_condition_result_true
else
second_condition_result_false
end
end
end as qty
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
case表达式有三种格式。你可以用很多WHEN as做CASE;
CASE WHEN Col1 = 1 OR Col3 = 1 THEN 1
WHEN Col1 = 2 THEN 2
...
ELSE 0 END as Qty
或者一个简单的CASE表达式
CASE Col1 WHEN 1 THEN 11 WHEN 2 THEN 21 ELSE 13 END
或个案中个案作为;
CASE WHEN Col1 < 2 THEN
CASE Col2 WHEN 'X' THEN 10 ELSE 11 END
WHEN Col1 = 2 THEN 2
...
ELSE 0 END as Qty
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
