Question

I have created a stored procedure to retrieve some details based on the certain values passed to a parameter. THis requires switching between the SQLs to be executed by stored procedure. Following is the code:

USE [DFS]
GO
SET ANSI_NULLS ON
GO
SET QUOTED_IDENTIFIER ON
GO

ALTER PROCEDURE [dbo].[DAFS]
@EmailID Nvarchar(128),
@clientID int,
@userType Varchar(50),
@Success numeric output, 
@msg varchar(100) output  

AS

BEGIN
    if @userType='Normal User'
        IF EXISTS (SELECT 1 FROM dbo.Allcdn 
                    WHERE EmailID = @EmailID AND ClientID = @clientID) 
            begin
                set @Success=0
                set @msg='Carry on ....'
            end
        else
            begin
                set @Success=6  
                set @msg='Not allowed ...' 
            END
        end
    else
        Begin
            IF EXISTS (SELECT 1 FROM dbo.Alcon 
                        WHERE EmailID = @EmailID AND ClientID = @clientID) 
                BEGIN
                    set @Success=0
                    set @msg='Carry on...' 
                END 
            END
        End
    end
END

The entire processing is based on the variable @userType. Not sure why the stored procedure is not compiling.

Answer 1

Formatting is your friend, just with a quick glance, it appears you have too many ENDs — See SQL Fiddle with working Demo:

CREATE PROCEDURE [dbo].[DAFS]
  @EmailID Nvarchar(128),
  @clientID int,
  @userType Varchar(50),
  @Success numeric output, 
  @msg varchar(100) output  

AS
BEGIN
  if @userType='Normal User'
    IF EXISTS (SELECT 1 FROM dbo.Allcdn 
                WHERE EmailID = @EmailID AND ClientID = @clientID) 
      begin
        set @Success=0
        set @msg='Carry on ....'
      end
    else
      begin
        set @Success=6  
        set @msg='Not allowed ...' 
      END
  else
    Begin
      IF EXISTS (SELECT 1 FROM dbo.Alcon 
                    WHERE EmailID = @EmailID AND ClientID = @clientID)
        BEGIN
          set @Success=0
          set @msg='Carry on...' 
        END 
    END
end