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If condition in Store Proc

Posted on 2011-03-23
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Last Modified: 2012-05-11
Hi ,

I was trying to put if condition in my store proc ,it throws error. I know am doing wrong some where,can some one guide me please

Here what am trying to achieve is ,when ever i do update,i will check the existing record and get the "ClassValue" and check the parameter am getting if both are not equal then i will update "ClassValue" ="01" if not then i will pass the parameter.

Am not sure i miss something in my If condition look like


CREATE PROC [dbo].[InsertEmployee]
      @EmployeeNo int,
      @ClassValue Decimal(18,2)
AS
IF NOT EXISTS (select employeeno from Phone where employeeno = @EmployeeNo and PhoneNumber = @PhoneNumber)
BEGIN
      DECLARE @CONTEXT_INFO varchar(100)
      SELECT @CONTEXT_INFO = COALESCE(CONVERT(VARCHAR(128), CONTEXT_INFO()), CURRENT_USER)
      Declare @Level deceimal(18,2)

      SELECT
             @Level = Ad.ClassValue
      FROM
             Employee Ad
      WHERE Ad.Employeeno= @EmployeeNo

If(@Level !=Ad.ClassValue)
BEGIN
update [Employee] set ClassValue= '01', UpdatedBy = @CONTEXT_INFO where employeeno = @EmployeeNo 
END
 Else
Begin
update [Employee] set ClassValue= ClassValue, UpdatedBy = @CONTEXT_INFO where employeeno = @EmployeeNo 

End
Else
Begin	

     I will insert.
END

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Question by:Sha1395
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7 Comments
 
LVL 143

Accepted Solution

by:
Guy Hengel [angelIII / a3] earned 2000 total points
ID: 35196868
what about:
CREATE PROC [dbo].[InsertEmployee]
      @EmployeeNo int,
      @ClassValue Decimal(18,2)
AS
IF NOT EXISTS (select employeeno from Phone where employeeno = @EmployeeNo and PhoneNumber = @PhoneNumber)
BEGIN
      DECLARE @CONTEXT_INFO varchar(100)
      SELECT @CONTEXT_INFO = COALESCE(CONVERT(VARCHAR(128), CONTEXT_INFO()), CURRENT_USER)



  update [Employee] 
     set ClassValue = CASE WHEN ClassValue = @ClassValue THEN '01' ELSE @ClassValue END
       , UpdatedBy = @CONTEXT_INFO 
  where employeeno = @EmployeeNo 

  if @@rowcount = 0
  begin
     '  I will insert.
  end
END

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0
 

Author Comment

by:Sha1395
ID: 35196898
Thanks angelIII,

Please correct me if am wrong

     set ClassValue = CASE WHEN ClassValue <> @ClassValue THEN '01' ELSE @ClassValue END


Condition am trying to implement in update query is

If(ClassValue !=@classValue)
{
ClassValue ="01"
else
ClassValue=@ClassValue
}

This is what am trying.
0
 
LVL 143

Expert Comment

by:Guy Hengel [angelIII / a3]
ID: 35196922
exactly
0
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Author Comment

by:Sha1395
ID: 35196925
Thanks again AngelIII for your help on yesterday and today's queries.
0
 

Author Comment

by:Sha1395
ID: 35205887
Hi AgnelIII,

My condition changed little bit. what if is suppose to use multiple if condition in my Query.

Like this

If(@Level ='V2') and (Ad.ClassValue='v1')
BEGIN
update [Employee] set ClassValue= '01', UpdatedBy = @CONTEXT_INFO where employeeno = @EmployeeNo
END
 Elseif (@Level ='V3') and (Ad.ClassValue='v2')
begin
update [Employee] set ClassValue= '01', UpdatedBy = @CONTEXT_INFO where employeeno = @EmployeeNo
End
Elseif (@Level ='V4') and (Ad.ClassValue='v3')
begin
update [Employee] set ClassValue= '01', UpdatedBy = @CONTEXT_INFO where employeeno = @EmployeeNo
End
Else
update [Employee] set ClassValue= '00', UpdatedBy = @CONTEXT_INFO where employeeno = @EmployeeNo
End
0
 
LVL 143

Expert Comment

by:Guy Hengel [angelIII / a3]
ID: 35205940
you change the CASE syntax:
set ClassValue = CASE 
   WHEN ClassValue = 'V1' AND @ClassValue = '02' THEN '01' 
   WHEN ClassValue = 'V2' AND @ClassValue = '03' THEN '01' 
   WHEN ClassValue = 'V3' AND @ClassValue = '04' THEN '01' 
   ELSE '00' END

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0
 

Author Comment

by:Sha1395
ID: 35205954
Thank you so much AngelIII
0

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