How to write Inline queries in Oracle 10g

Question

Hi all,
The following Procedure is written in SQL Server 2005 . It uses Inline queries and executes it in the end . I want to write the same stored procedure in Oracle 10g.
Could you guys please help me in doing the same .
CREATE PROCEDURE [dbo].[proc_MDM_ShowDetails]
@MASTERCODE VARCHAR(50),
@MDMCode VARCHAR(50),
@IsDrpDwnFill BIT,
@CntryCode INT,
@StateCode INT,
@CityCode INT = 0,
@GetParent INT = 0,
@PinCode BIT = 0
AS
BEGIN
DECLARE @strSQL VARCHAR(4000)
DECLARE @TableName VARCHAR(4000)
SET NOCOUNT ON;
SELECT @TableName = MASTER_TABLE FROM MDM_MASTER WHERE MASTER_CODE=@MASTERCODE
IF @IsDrpDwnFill = 0 AND @CntryCode = 0 AND @GetParent = 0
BEGIN
SET @strSQL = 'SELECT M.*,H.* FROM ' + @TableName + ' M LEFT JOIN MDM_HIERARCHY H ON M.MDM_MASTER_CODE=H.MASTER_CODE WHERE M.MDM_CODE=' + @MDMCode
END
ELSE IF @CntryCode = 0 AND @IsDrpDwnFill = 1
BEGIN
SET @strSQL = 'SELECT MDM_DESCRIPTION,MDM_CODE FROM ' + @TableName + ' WHERE MDM_STATUS=' + '''' + 'approved' + '''' + ' AND MDM_EXIST=1'
END
ELSE IF @CntryCode > 0 and @GetParent = 0
BEGIN
SET @strSQL = 'SELECT M.MDM_DESCRIPTION,M.MDM_CODE,H.* FROM ' + @TableName + ' M INNER JOIN MDM_HIERARCHY H ON M.MDM_MASTER_CODE=H.MASTER_CODE WHERE MDM_STATUS=' + '''' + 'approved' + '''' +
' AND MDM_EXIST = 1 AND MDM_PARENT_CODE =' + str(@CntryCode)
END
ELSE IF @StateCode > 0 and @GetParent = 0
BEGIN
SET @strSQL = 'SELECT MDM_DESCRIPTION,MDM_CODE FROM ' + @TableName + ' WHERE MDM_STATUS=' + '''' + 'approved' + '''' +
' AND MDM_EXIST = 1 AND MDM_PARENT_CODE =' + str(@StateCode)
END
ELSE IF @CityCode > 0 and @GetParent = 0
BEGIN
SET @strSQL = 'SELECT MDM_DESCRIPTION,MDM_CODE FROM ' + @TableName + ' WHERE MDM_STATUS=' + '''' + 'approved' + '''' +
' AND MDM_EXIST = 1 AND MDM_PARENT_CODE =' + str(@CityCode)
END
ELSE IF @PinCode = 1 and @GetParent = 0 and @IsDrpDwnFill = 1
BEGIN
SET @strSQL = 'SELECT MDM_DESCRIPTION,MDM_CODE FROM ' + @TableName + ' WHERE MDM_STATUS=' + '''' + 'approved' + '''' +
' AND MDM_EXIST = 1 '
END
ELSE IF @GetParent > 0
BEGIN
SET @strSQL = 'SELECT * FROM ' + @TableName + ' WHERE MDM_STATUS=' + '''' + 'approved' + '''' +
' AND MDM_EXIST = 1 AND MDM_CODE =' + str(@GetParent)
END
EXEC(@strSQL)
SET NOCOUNT OFF;
END
Thanks
Shobhit

Answer 1

Hi,
I dont know sql server 2005. But by observing it I feel you are generating sql dynamically based on condition inside the proc.
DECLARE
   TYPE EmpCurTyp IS REF CURSOR;
   emp_cv   EmpCurTyp;
   emp_rec  employees%ROWTYPE;
   sql_stmt VARCHAR2(200);
   v_job   VARCHAR2(10) := 'ST_CLERK';
BEGIN
   sql_stmt := 'SELECT * FROM employees WHERE job_id = :j';
   OPEN emp_cv FOR sql_stmt USING v_job;
   LOOP
     FETCH emp_cv INTO emp_rec;
     EXIT WHEN emp_cv%NOTFOUND;
     DBMS_OUTPUT.PUT_LINE('Name: ' || emp_rec.last_name || ' Job Id: ' ||
                           emp_rec.job_id);
   END LOOP;
   CLOSE emp_cv;
END;something like this it will be. it is in oracle documentaion
http://download.oracle.com/docs/cd/B19306_01/appdev.102/b14261/dynamic.htm#i14500