Question

使用sp_executesql我想执行一个列的结果，该列在列上存储预先写好的查询，如下所示。

DECLARE @ID AS INT =2
DECLARE @StoredQueries Table
(
ID INT IDENTITY(1,1),
ExtractSQL NVARCHAR(MAX)
)

INSERT INTO @StoredQueries
VALUES(
 'SELECT [DepartmentID]
      ,[Name]
      ,[GroupName]
      ,[ModifiedDate]
  FROM [AdventureWorks2008R2].[HumanResources].[Department]'
       )
INSERT INTO @StoredQueries
VALUES(
 'SELECT[ShiftID]
      ,[Name]
      ,[StartTime]
      ,[EndTime]
      ,[ModifiedDate]
  FROM [AdventureWorks2008R2].[HumanResources].[Shift]
  '
         )

INSERT INTO @StoredQueries
VALUES(
 'SELECT TOP 1000 [AddressID]
      ,[AddressLine1]
      ,[AddressLine2]
      ,[City]
      ,[StateProvinceID]
      ,[PostalCode]
      ,[SpatialLocation]
      ,[rowguid]
      ,[ModifiedDate]
  FROM [AdventureWorks2008R2].[Person].[Address]'
       )
  SELECT * FROM @StoredQueries  
  WHERE ID =@ID

Dave.Gugg的结果回答

DECLARE @ID AS INT =2
DECLARE @StoredQueries Table
(
ID INT IDENTITY(1,1),
ExtractSQL NVARCHAR(MAX)
)

INSERT INTO @StoredQueries
VALUES(
 'SELECT [DepartmentID]
      ,[Name]
      ,[GroupName]
      ,[ModifiedDate]
  FROM [AdventureWorks2008R2].[HumanResources].[Department]'
       )
INSERT INTO @StoredQueries
VALUES(
 'SELECT[ShiftID]
      ,[Name]
      ,[StartTime]
      ,[EndTime]
      ,[ModifiedDate]
  FROM [AdventureWorks2008R2].[HumanResources].[Shift]
  '
         )

INSERT INTO @StoredQueries
VALUES(
 'SELECT TOP 1000 [AddressID]
      ,[AddressLine1]
      ,[AddressLine2]
      ,[City]
      ,[StateProvinceID]
      ,[PostalCode]
      ,[SpatialLocation]
      ,[rowguid]
      ,[ModifiedDate]
  FROM [AdventureWorks2008R2].[Person].[Address]'
       )

DECLARE @sql NVARCHAR(MAX)

SELECT @sql = ExtractSQL
FROM @StoredQueries
WHERE ID = @ID

EXEC sp_executesql @sql

Answer 1

您已关闭，只需用以下内容替换最后一个选择：

DECLARE @sql NVARCHAR(MAX)

SELECT @sql = ExtractSQL
FROM @StoredQueries
WHERE ID = @ID

EXEC sp_executesql @sql

sp_executesql在列中动态存储查询

1 个答案: