我正尝试如下进行完整查询
DECLARE @SQLFinal NVARCHAR(MAX)
DECLARE @SQLAlias NVARCHAR(MAX)='SELECT '',''+cast(ColumnName as varchar(20)) + '' as '' + cast(ColAliasName as varchar(20)) collate Latin1_General_CI_AS from #colandAlias'
DECLARE @SQLAliasResult NVARCHAR(MAX)
EXEC sp_executesql @SQLAlias= @SQLAliasResult OUTPUT
select @SQLAliasResult
-将sp_execute结果分配给变量@SQLAliasResult。它给出NULL而不是exec结果
-目的是将以上结果(@SQLAliasResult)与belwo查询部分合并在一起,以形成完整的查询
set @SQLFinal='SELECT
ID,Name,custid '
+@SQLAliasResult+
' FROM dbo.tableCustomer where custid=71'
-如何在变量中分配查询执行结果并实现此目标?
我认为第2行中不需要动态查询,我看不到任何动态字段。另外,我认为您需要这样的东西:
DECLARE @Columns TABLE(
ColumnName SYSNAME
)
INSERT INTO @Columns VALUES ( 'Column1' ), ( 'Column2' );
DECLARE @SelectString VARCHAR(255)
-- This is the sentence that is going to concat everything
SELECT @SelectString = ISNULL( @SelectString + ', ', '' ) + ColumnName
FROM @Columns;
-- Execute this or do what you need
SELECT @SelectString;