我想调用返回表值函数中的表的存储过程。如何创建表值函数?
例如:“sp_GetTable”是存储过程。它返回一个表。 在这里,我想编写一个名为“fn_GetTable”的函数
我想得到与存储过程给出的相同结果。
这是我的存储过程:
ALTER PROC sp_GetTable
AS
BEGIN
------------ Creating TempTable(#MasterTable) ----------------------
CREATE TABLE #MasterTable
(ItemID INT, ItemName VARCHAR(100), Specifications VARCHAR(100), D1 VARCHAR(50), D2 VARCHAR(50), D3 VARCHAR(50),
D1_Code VARCHAR(50), D2_Code VARCHAR(50), D3_Code VARCHAR(50))
------------ Creating TempTable(#TempItems) ----------------------
CREATE TABLE #TempItems(ItemID INT, ItemName VARCHAR(100), Specifications VARCHAR(100), D1 VARCHAR(50), D2 VARCHAR(50), D3 VARCHAR(50),
D1_Code VARCHAR(50), D2_Code VARCHAR(50), D3_Code VARCHAR(50))
------------ Creating & Inserting TempTable(@Dim) ----------------------
DECLARE @Dim TABLE (DCodes VARCHAR(100))
INSERT INTO @Dim SELECT D1_Code FROM MAS_SizeType WHERE D1_Code <> ''
INSERT INTO @Dim SELECT D2_Code FROM MAS_SizeType WHERE D2_Code <> ''
INSERT INTO @Dim SELECT D3_Code FROM MAS_SizeType WHERE D3_Code <> ''
------------ Inserting data into TempTable(#MasterTable) ----------------------
INSERT INTO #MasterTable
SELECT STR_Item.ItemID, STR_Item.ItemName, STR_Item_Specifications.SpecificationName,
STR_Item.D1, STR_Item.D2, STR_Item.D3, MAS_SizeType.D1_Code, MAS_SizeType.D2_Code,
MAS_SizeType.D3_Code
FROM STR_Item INNER JOIN
MAS_SizeType ON STR_Item.SizeTypeID = MAS_SizeType.SizeTypeID INNER JOIN
STR_Item_Specifications ON STR_Item.SpecificationID = STR_Item_Specifications.SpecificationID
-------------------- Inserting Data into #TempItems Table ----------------------------
INSERT INTO #TempItems
SELECT
*
FROM #MasterTable
------------------Cursor for All dimensions details into single row for each items ----------------------
DECLARE @DCode VARCHAR(MAX), @Cnt INT
SET @Cnt = 0
DECLARE ColAdd CURSOR FOR
SELECT DISTINCT DCodes FROM @Dim
OPEN ColAdd
FETCH NEXT FROM ColAdd INTO @DCode
WHILE (@@FETCH_STATUS = 0)
BEGIN
SET @Cnt = 1
EXECUTE ('ALTER TABLE #TempItems ADD ' + @DCode + ' VARCHAR(50)')
EXECUTE('UPDATE #TempItems SET [' + @DCode + '] = M.D1
FROM #MasterTable M
INNER JOIN #TempItems T ON T.ItemID = M.ItemID AND M.D1_Code = ''' + @DCode + '''')
EXECUTE('UPDATE #TempItems SET [' + @DCode + '] = M.D2
FROM #MasterTable M
INNER JOIN #TempItems T ON T.ItemID = M.ItemID AND M.D2_Code = ''' + @DCode + '''')
EXECUTE('UPDATE #TempItems SET [' + @DCode + '] = M.D3
FROM #MasterTable M
INNER JOIN #TempItems T ON T.ItemID = M.ItemID AND M.D3_Code = ''' + @DCode + '''')
FETCH NEXT FROM ColAdd INTO @DCode
END
CLOSE ColAdd
DEALLOCATE ColAdd
IF (@Cnt = 1)
BEGIN
SELECT @DCode = STUFF(( SELECT DISTINCT '],[' + ltrim(DCodes)
FROM @Dim
ORDER BY '],[' + ltrim(DCodes)
FOR XML PATH('')
), 1, 2, '') + ']'
EXECUTE ('SELECT ItemID, ItemName, Specifications, ' + @DCode + ' FROM #TempItems ORDER BY ItemName')
END
DROP TABLE #TempItems
DROP TABLE #MasterTable
END
最佳答案
可以在标量函数中执行此操作,无法从表值函数中执行此操作。标量函数返回单个数据类型值,也不能返回表。由于您无法从存储过程中进行选择(您需要EXEC
),因此在表值函数中没有位置。
In general, if the stored procedure returns a, single, result set, define a table-valued function. If the stored procedure computes a scalar value, define a scalar function.
来自:Rewriting Stored Procedures as Functions
将存储过程重写为表值函数将为您带来最佳性能。
关于sql - 如何在SQL Server 2005中调用表值函数中的存储过程?,我们在Stack Overflow上找到一个类似的问题: https://stackoverflow.com/questions/6340734/