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:
-- Create date:
-- Description:
-- =============================================
CREATE FUNCTION
(
-- Add the parameters for the function here
<@Param1, sysname, @p1>
)
RETURNS
AS
BEGIN#p#
-- Declare the return variable here
DECLARE <@ResultVar, sysname, @Result>
-- 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:
-- Create date:
-- Description:
-- =============================================
CREATE FUNCTION
(
-- Add the parameters for the function here
<@param1, sysname, @p1>
<@param2, sysname, @p2>
)
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:
-- Create date:
-- Description:
-- =============================================
CREATE FUNCTION
(
-- Add the parameters for the function here
<@param1, sysname, @p1>
<@param2, sysname, @p2>
)
RETURNS #p#
<@Table_Variable_Name, sysname, @Table_Var> TABLE
(
-- Add the column definitions for the TABLE variable here
)
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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