Portal | Manuals | References | Downloads | Info | Programs | JCLs | Mainframe wiki | Quick Ref
IBM Mainframe Computers Forums Index
 
Register
 
IBM Mainframe Computers Forums Index Mainframe: Search IBM Mainframe Forum: FAQ Memberlist Profile Log in to check your private messages Log in
 
SQL query to reduce the conditions in where clause

 
Post new topic   Reply to topic    IBMMAINFRAMES.com Support Forums -> COBOL Programming
View previous topic :: :: View next topic  
Author Message
santohsks1987
Warnings : 1

New User


Joined: 29 Dec 2010
Posts: 31
Location: Mumbai

PostPosted: Tue Jan 11, 2011 12:24 pm    Post subject: SQL query to reduce the conditions in where clause
Reply with quote

Hi everyone,

I have a SQL query.

EXEC SQL
SELECT FIRST_NM, REL_CD, BIRTH_DT
FROM T_NEUT_MBR
WHERE REL_CD NOT = ‘E’
AND ((FIRST_NM = WS-FIRST-NAME(SUB)
AND (REL_CD = WS-REL-CD(SUB)
OR BIRTH_DT = WS-BIRTH_DT(SUB)))
OR (REL_CD = WS-REL_CD(SUB)
AND (FIRST_NM = WS-FIRST-NAME(SUB)
OR BIRTH_DT = WS-BIRTH_DT(SUB)))
OR (BIRTH_DT = WS-BIRTH_DT(SUB)
AND (FIRST_NM = WS-FIRST-NAME(SUB)
OR REL_CD = WS-REL-CD(SUB))))
END-EXEC.

here i actually have to reduce the conditions in where clause..... can u suggest me how to do it.

This conditions actually signify that there are three conditions and only 2 out of three conditions have to satisfy it. so i have done permutation and combination to get 9 conditions.
Back to top
View user's profile Send private message

GuyC

Senior Member


Joined: 11 Aug 2009
Posts: 1281
Location: Belgium

PostPosted: Tue Jan 11, 2011 1:23 pm    Post subject:
Reply with quote

Code:
(a is true and (b is true or c is true))
or (b is true and c is true)


Code:
WHERE REL_CD NOT = ‘E’  AND
((FIRST_NM = WS-FIRST-NAME(SUB) AND (REL_CD = WS-REL-CD-SUB)  OR BIRTH_DT = WS-BIRTH_DT(SUB)))
 OR (REL_CD    = WS-REL_CD(SUB)     AND BIRTH_DT = WS-BIRTH_DT(SUB)))
Back to top
View user's profile Send private message
santohsks1987
Warnings : 1

New User


Joined: 29 Dec 2010
Posts: 31
Location: Mumbai

PostPosted: Tue Jan 11, 2011 1:53 pm    Post subject:
Reply with quote

Thank you for the reply..... so this code satisfies my requirement na.....
Back to top
View user's profile Send private message
View previous topic :: :: View next topic  
Post new topic   Reply to topic    IBMMAINFRAMES.com Support Forums -> COBOL Programming All times are GMT + 6 Hours
Page 1 of 1

 

Search our Forum:

Similar Topics
Topic Author Forum Replies Posted
No new posts Speed-up/reduce CPU use of code prino PL/I & Assembler 0 Tue Sep 26, 2017 12:05 am
No new posts Create procedure issues -628 when add... chandraBE DB2 1 Mon Sep 18, 2017 12:16 pm
No new posts Can we limit length in concatenation ... balaji81_k DB2 7 Tue Aug 22, 2017 2:50 am
No new posts Reduce CPU Times for Join Sort santoshn SYNCSORT 12 Sat Jun 10, 2017 1:40 pm
No new posts Need DB2 query to fetch previous row ! Chandan1993 DB2 10 Sat Jun 03, 2017 10:43 am

Facebook
Back to Top
 
Job Vacancies | Forum Rules | Bookmarks | Subscriptions | FAQ | Polls | Contact Us