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Conditional Stored procedures

Posted on 2009-06-30
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Last Modified: 2012-05-07
I am looking for a way to insert data into a table but if there is already a record there with the same employeeid or userid, I want it to be an update.  How would I do this in a stored procedure?  Thank you for your help ahead of time.
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Question by:VBBRett
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7 Comments
 
LVL 75

Expert Comment

by:Aneesh Retnakaran
ID: 24746047

create procedure testSp
@EmployeeID int
AS
BEGIN
SET NOCOUNT ON
INSERT INTO urTable  (EmployeeID)
SELECT @EmployeeID
WHERE NOT EXISTS (SELECT 1 FROM urTable WHERE EmployeeID = @EmployeeID )
IF @@ROWCOUNT = 0
  UPDATE urTable
 SET ColumnName = Value
 WHERE EmployeeID = @EmployeeID
END
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LVL 143

Expert Comment

by:Guy Hengel [angelIII / a3]
ID: 24746081
here you have a comparison of the 2 possible methods:
http://weblogs.sqlteam.com/mladenp/archive/2007/07/30/60273.aspx

I usually go with the  UPDATE + INSERT, and not with the EXISTS method...
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Author Comment

by:VBBRett
ID: 24746274
angelll, can you give me an example of the update + insert conditional statement?
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Microsoft Certification Exam 74-409

Veeam® is happy to provide the Microsoft community with a study guide prepared by MVP and MCT, Orin Thomas. This guide will take you through each of the exam objectives, helping you to prepare for and pass the examination.

 
LVL 143

Expert Comment

by:Guy Hengel [angelIII / a3]
ID: 24746410
you did not look into the link, did you?
the code is there.
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Author Comment

by:VBBRett
ID: 24746549
Here is my insert statement.  How would I change this to a conditional insert statement, or update if there is a record?  See the code below:  Thanks!
USE [EmployeeS2]
GO
/****** Object:  StoredProcedure [dbo].[EmployeeS2Answers]    Script Date: 06/30/2009 11:48:16 ******/
SET ANSI_NULLS ON
GO
SET QUOTED_IDENTIFIER ON
GO
-- =============================================
-- Author:		<Me>
-- Create date: <06/25/09>
-- Description:	<This procedure enters question 
--information into EmployeeS2 Table in the
-- Employee database
-- =============================================
ALTER PROCEDURE [dbo].[EmployeeScreeningAnswers]
		@EmployeeId		int,
		@Question1		bit,
		@Question2		bit,
		@Question3		bit,
		@Question4		bit,
		@Question5		bit,
		@Question6		bit,	
		@Question7		bit,
		@Question8		bit,
		@Question9		bit,
		@Question10		bit,
		@Question11		bit,
		@Question12		bit,
		@Question13		bit,
		@Question14		bit,
		@Question15		bit,	
		@Question16		bit,		
		@LastUpdate		datetime,
		@LastUpdateBy	nvarchar
			
AS
BEGIN
 
	INSERT INTO [dbo].[EmployeeS2](EmployeeId, Q1, Q2, Q3, Q4, Q5, Q6, Q7, Q8, Q9,
Q10, Q11, Q12, Q13, Q14, Q15, Q16, LastUpdate, LastUpdateBy)
VALUES (@EmployeeId, @Question1, @Question2, @Question3, @Question4, @Question5, @Question6,
@Question7, @Question8, @Question9, @Question10, @Question11, @Question12, @Question13, 
@Question14, @Question15, @Question16, @LastUpdate, @LastUpdateBy)
 
END

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LVL 143

Expert Comment

by:Guy Hengel [angelIII / a3]
ID: 24746630
presuming employeeid is the primary key...
ALTER PROCEDURE [dbo].[EmployeeScreeningAnswers]
		@EmployeeId		int,
		@Question1		bit,
		@Question2		bit,
		@Question3		bit,
		@Question4		bit,
		@Question5		bit,
		@Question6		bit,	
		@Question7		bit,
		@Question8		bit,
		@Question9		bit,
		@Question10		bit,
		@Question11		bit,
		@Question12		bit,
		@Question13		bit,
		@Question14		bit,
		@Question15		bit,	
		@Question16		bit,		
		@LastUpdate		datetime,
		@LastUpdateBy	nvarchar
			
AS
BEGIN
UPDATE [dbo].[EmployeeS2]
     SET Question1 = @Question1
       , Question2 = @Question2
       ... etc ...
  WHERE EmployeeId = @EmployeeId
IF @@ROWCOUNT = 0
BEGIN 
	INSERT INTO [dbo].[EmployeeS2](EmployeeId, Q1, Q2, Q3, Q4, Q5, Q6, Q7, Q8, Q9,
Q10, Q11, Q12, Q13, Q14, Q15, Q16, LastUpdate, LastUpdateBy)
VALUES (@EmployeeId, @Question1, @Question2, @Question3, @Question4, @Question5, @Question6,
@Question7, @Question8, @Question9, @Question10, @Question11, @Question12, @Question13, 
@Question14, @Question15, @Question16, @LastUpdate, @LastUpdateBy)
END
END

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LVL 75

Accepted Solution

by:
Aneesh Retnakaran earned 2000 total points
ID: 24751251
something like this

USE [EmployeeS2]
GO
/****** Object:  StoredProcedure [dbo].[EmployeeS2Answers]    Script Date: 06/30/2009 11:48:16 ******/
SET ANSI_NULLS ON
GO
SET QUOTED_IDENTIFIER ON
GO
-- =============================================
-- Author:		<Me>
-- Create date: <06/25/09>
-- Description:	<This procedure enters question 
--information into EmployeeS2 Table in the
-- Employee database
-- =============================================
ALTER PROCEDURE [dbo].[EmployeeScreeningAnswers]
		@EmployeeId		int,
		@Question1		bit,
		@Question2		bit,
		@Question3		bit,
		@Question4		bit,
		@Question5		bit,
		@Question6		bit,	
		@Question7		bit,
		@Question8		bit,
		@Question9		bit,
		@Question10		bit,
		@Question11		bit,
		@Question12		bit,
		@Question13		bit,
		@Question14		bit,
		@Question15		bit,	
		@Question16		bit,		
		@LastUpdate		datetime,
		@LastUpdateBy	nvarchar
			
AS
BEGIN
SET NOCOUNT 
INSERT INTO [dbo].[EmployeeS2](EmployeeId, Q1, Q2, Q3, Q4, Q5, Q6, Q7, Q8, Q9,
				Q10, Q11, Q12, Q13, Q14, Q15, Q16, LastUpdate, LastUpdateBy)
SELECT @EmployeeId, @Question1, @Question2, @Question3, @Question4, @Question5, @Question6,
		@Question7, @Question8, @Question9, @Question10, @Question11, @Question12, @Question13, 
		@Question14, @Question15, @Question16, @LastUpdate, @LastUpdateBy
WHERE NOT EXISTS (SELECT 1 FROM [dbo].[EmployeeS2] WHERE EmployeeID = @EmployeeId )
IF @@ROWCOUNT = 0 
	UPDATE [dbo].[EmployeeS2]
	SET Q1 = @Question1, 
	    Q2 = @Question2,...
	EmployeeID = @EmployeeId		
 
END 

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Microsoft Certification Exam 74-409

Veeam® is happy to provide the Microsoft community with a study guide prepared by MVP and MCT, Orin Thomas. This guide will take you through each of the exam objectives, helping you to prepare for and pass the examination.

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