Re: How to create procedure for header table and item table

Hi Folks,

This is my use case

1) Select fact records from tables (say A,B,C,D ) with suitable Joins and certain Where conditions

    SELECT ordid FROM TABLES A,B,C,D on join condition where ....

2) Using above header records , I have to select each and every item level data from different tables ( say X,Y,Z ) and perform calculation to derive new columns to update a new table ( Zreport )

UPDATE TABLE ZREPORT

SET col1 = ( Select qty  FROM TABLE X WHERE ordid = A.ordid

UPDATE TABLE ZREPORT

SET col2 = ( Select price FROM TABLE y WHERE ordid = B.ordid.

and so on for other columns..

3) Zreport table will be used for reporting.

I would like to know the best way to achieve this to gain performance.

Appreciate the help!

Thanks

Sourav