Make a normal query from a stored procedure - sql

Question

Using VB6 and SQL Server 2000
I want to convert a stored procedure to normal query
Stored procedure:
Alter PROC [dbo].[proc_New]
#CCODE VARCHAR(100),
#EmpCode VARCHAR(100)
AS
BEGIN
DECLARE #ID VARCHAR (5)
DECLARE #Des VARCHAR(10)
DECLARE #SQL VARCHAR(1000)
DECLARE #Flag INT
SELECT #Flag=0
SELECT #SQL = 'SELECT PERSONID FROM T_PERSON WHERE '
IF #CCODE<>'All'
BEGIN
IF #Flag=1
BEGIN
SELECT #SQL = #SQL+' AND (CCODE IN ('''+#CCODE+'''))'
END
ELSE
BEGIN
SELECT #SQL = #SQL+' (CCODE IN ('''+#CCODE+'''))'
SELECT #Flag=1
END
END
IF #EMPCODE<>'All'
BEGIN
IF #Flag=1
BEGIN
SELECT #SQL = #SQL+' AND (EMPCODE IN ('''+#EMPCODE+'''))'
END
ELSE
BEGIN
SELECT #SQL = #SQL+' (EMPCODE IN ('''+#EMPCODE+'''))'
SELECT #Flag=1
END
END
IF #SQL = 'SELECT EmpCode FROM EMPMST WHERE ' SELECT #SQL = 'SELECT EmpCode FROM EMPMST'
INSERT INTO table EXEC(#SQL)
GO
Procedure Explanation...
I am passing 2 parameter values like emp_code or All and company_code or All.
In the 1st parameter (Emp_Code): if the value is "All" means then query return the all the emp_code or If the values is "001" then query return the "001" emp_code only
In the 2nd Parameter (Company_Code): if the value is "All" means then query return the all the emp_code for all the company (ex: IBM, SoftTech, etc) or If the value is "IBM" means then query return all the emp_code for that company (IBM)
Above stored procedure is working fine, but I want to convert into normal query.
Can anybody help me
Need query help

Answer 1

Below is the simpler query, please try with this:
SELECT PERSONID FROM T_PERSON WHERE
CCODE = (
CASE WHEN #CCODE = 'ALL' THEN CCODE
ELSE #CCODE END
)
AND
EMPCODE = (
CASE WHEN #EMPCODE = 'ALL' THEN EMPCODE
ELSE #EMPCODE
END
)

Answer 2

You can't directly do this in SQL outside of a stored procedure, your stored procedure has several if/else statements, no structure exists in sql queries to do this, if you want to achieve this you will need to build in sripting logic from the language accessing it with (i.e. c#/php/coldfusion/etc) and then perform the individual queries.
What Language are you calling the stored procedure from, or is this directly from the SQL server?
Edit: I have not used VB6 in a while so I don't remember how to write this in VB but you would basically be copying the logic from the stored procedure to build the query and then sending the query directly from VB not letting the stored procedure do it.
e.g.
Dim sql As String
If CCODE <> 'All'
sql = 'SELECT PERSONID FROM T_PERSON WHERE AND (CCODE IN (' & CCODE & '));'
{send the query to sql server}
End If