SQL函数和存储过程模板示例

学习SQL数据库，函数和存储过程都是非常重要的，下面就将为您示例SQL函数和存储过程模板，供您参考，希望对您学习SQL函数和存储过程能有所启迪。

–标量值函数
 

— ================================================
— Template generated from Template Explorer using:
— Create Scalar Function (New Menu).SQL
—
— Use the Specify Values for Template Parameters
— command (Ctrl-Shift-M) to fill in the parameter
— values below.
—
— This block of comments will not be included in
— the definition of the function.
— ================================================
SET ANSI_NULLS ON
GO
SET QUOTED_IDENTIFIER ON
GO
— =============================================
— Author:   <Author,,Name>
— Create date: <Create Date, ,>
— Description: <Description, ,>
— =============================================
CREATE FUNCTION <Scalar_Function_Name, sysname, FunctionName>
(
— Add the parameters for the function here
<@Param1, sysname, @p1> <Data_Type_For_Param1, , int>
)
RETURNS <Function_Data_Type, ,int>
AS
BEGIN#p#
— Declare the return variable here
DECLARE <@ResultVar, sysname, @Result> <Function_Data_Type, ,int>

— Add the T-SQL statements to compute the return value here
SELECT <@ResultVar, sysname, @Result> = <@Param1, sysname, @p1>

— Return the result of the function
RETURN <@ResultVar, sysname, @Result>

END
GO

–////////////////////////////////////////////////////////////////////////////////////////////////////////////

–内联表值函数

— ================================================
— Template generated from Template Explorer using:
— Create Inline Function (New Menu).SQL
—
— Use the Specify Values for Template Parameters
— command (Ctrl-Shift-M) to fill in the parameter
— values below.
—
— This block of comments will not be included in
— the definition of the function.
— ================================================
SET ANSI_NULLS ON
GO
SET QUOTED_IDENTIFIER ON
GO
— =============================================
— Author:   <Author,,Name>
— Create date: <Create Date,,>
— Description: <Description,,>
— =============================================
CREATE FUNCTION <Inline_Function_Name, sysname, FunctionName>
(
— Add the parameters for the function here
<@param1, sysname, @p1> <Data_Type_For_Param1, , int>,
<@param2, sysname, @p2> <Data_Type_For_Param2, , char>
)
RETURNS TABLE #p#
AS
RETURN
(
— Add the SELECT statement with parameter references here
SELECT 0
)
GO

–//////////////////////////////////////////////////////////////////////////////////////////////////////////////

–多语句表值函数

— ================================================
— Template generated from Template Explorer using:
— Create Multi-Statement Function (New Menu).SQL
—
— Use the Specify Values for Template Parameters
— command (Ctrl-Shift-M) to fill in the parameter
— values below.
—
— This block of comments will not be included in
— the definition of the function.
— ================================================
SET ANSI_NULLS ON
GO
SET QUOTED_IDENTIFIER ON
GO
— =============================================
— Author:   <Author,,Name>
— Create date: <Create Date,,>
— Description: <Description,,>
— =============================================
CREATE FUNCTION <Table_Function_Name, sysname, FunctionName>
(
— Add the parameters for the function here
<@param1, sysname, @p1> <data_type_for_param1, , int>,
<@param2, sysname, @p2> <data_type_for_param2, , char>
)
RETURNS #p#
<@Table_Variable_Name, sysname, @Table_Var> TABLE
(
— Add the column definitions for the TABLE variable here
<Column_1, sysname, c1> <Data_Type_For_Column1, , int>,
<Column_2, sysname, c2> <Data_Type_For_Column2, , int>
)
AS
BEGIN
— Fill the table variable with the rows for your result set

RETURN
END
GO

–//////////////////////////////////////////////////////////////////////////////////////////////////////////////

–多语句表值函数

DECLARE @MergeDate Datetime
DECLARE @MasterId Int
DECLARE @DuplicateId Int

SELECT @MergeDate = GetDate()

DECLARE merge_cursor CURSOR FAST_FORWARD FOR SELECT MasterCustomerId, DuplicateCustomerId FROM DuplicateCustomers WHERE IsMerged = 0

OPEN merge_cursor

FETCH NEXT FROM merge_cursor INTO @MasterId, @DuplicateId

WHILE @@FETCH_STATUS = 0
BEGIN
EXEC MergeDuplicateCustomers @MasterId, @DuplicateId

UPDATE DuplicateCustomers
SET
IsMerged = 1,
MergeDate = @MergeDate
WHERE
MasterCustomerId = @MasterId AND
DuplicateCustomerId = @DuplicateId

FETCH NEXT FROM merge_cursor INTO @MasterId, @DuplicateId
END

CLOSE merge_cursor
DEALLOCATE merge_cursor

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