选择SQL列作为添加的行
我有一个SQL Server 2008表格,如下所示选择SQL列作为添加的行,sql,sql-server,sql-server-2008,Sql,Sql Server,Sql Server 2008,我有一个SQL Server 2008表格,如下所示 ID Others1Desc Others1Value Others2Desc Others2value -- ----------- ------------ ----------- ------------ id_x xyz 12.50 pqr 10.00 id_y abc NULL
ID Others1Desc Others1Value Others2Desc Others2value
-- ----------- ------------ ----------- ------------
id_x xyz 12.50 pqr 10.00
id_y abc NULL mno 1.05
ID ItemDesc ItemValue
-- ----------- ------------
id_x xyz 12.50
id_x pqr 10.00
id_y abc NULL
id_y mno 1.05
现在,我希望选择的结果如下
ID Others1Desc Others1Value Others2Desc Others2value
-- ----------- ------------ ----------- ------------
id_x xyz 12.50 pqr 10.00
id_y abc NULL mno 1.05
ID ItemDesc ItemValue
-- ----------- ------------
id_x xyz 12.50
id_x pqr 10.00
id_y abc NULL
id_y mno 1.05
非常感谢您的指导。谢谢您可以使用
UNION ALL
执行此操作:
select ID, Others1Desc as ItemDesc, Others1Value as ItemValue
from yourtable
union all
select ID, Others2Desc as ItemDesc, Others2Value as ItemValue
from yourtable
另一种方法是像这样使用
交叉应用
和值子句
DECLARE @temp table (ID [varchar](100), Others1Desc [varchar](100), Others1Value decimal(11, 2), Others2Desc [varchar](100), Others2Value decimal(11, 2));
INSERT @temp (ID, Others1Desc, Others1Value, Others2Desc, Others2Value) VALUES ('id_x', 'xyz', 12.50, 'pqr', 10.00);
INSERT @temp (ID, Others1Desc, Others1Value, Others2Desc, Others2Value) VALUES ('id_y', 'abc', NULL, 'mno', 1.05);
select ID, t.* from @temp
cross apply
(
values (Others1Desc, Others1Value),
(Others2Desc, Others2Value)
) t(ItemDesc, ItemValue)
结果
ID ItemDesc ItemValue
--------------------------
id_x xyz 12.50
id_x pqr 10.00
id_y abc NULL
id_y mno 1.05
这样:
select ID, Others1Desc as ItemDesc,Others1Value as itemValue from
(select ID , Others1Desc , Others1Value from table1
Union all
select ID , Others2Desc, Others2value from table1)as a
今天学到了一些东西