SELECCT, MAX() queries not working on a DB2 table. Reason???

rahul_kk · New User Joined: 24 Nov 2006 Posts: 5 Location: Chennai

Hi,

In my COBOL program, I have a MAX(<Date>) query on a table. But, It fails to fetch the record with WHERE conditions.
Ex:
SELECT MAX(RUN_DATE)
FROM STMT_CNTL
WHERE <Conditions>

Above query fails even with a valid record exists in the table. When I execute this query separately in SPUFI/QMF it fetches the record.

Also, simple SELECT statement on the same table failed.
Ex:
SELECT RLSE_DATE
INTO :<Host-variable>
FROM STMT_CNTL
WHERE <Conditions>

A record exists for this conditions in the table. These queries are failing when I execute thru COBOL program.
What could be the reason for this? Is there any problem with DB2 table like RUNSTATS/REORG/Tablespace/Indexes etc???

Thanks,
Rahul

enrico-sorichetti · Posted: Tue Jun 17, 2008 12:37 pm

If You want some help You need to post some meaningful info
"the query fails" is a bit generic to start any problem determination

what about looking at the sqlcode and search it in the manuals
it should give You a good hint to start fixing the problem

rahul_kk · New User Joined: 24 Nov 2006 Posts: 5 Location: Chennai

Hi,

SELECT MAX(RUN_DATE)
INTO :<Host-variable>
FROM STMT_CNTL
WHERE <Conditions>

Above query gives SQLCODE as 0 with blank value in Host-variable. It fetches the record when executes in SPUFI/QMF.

SELECT RLSE_DATE
INTO :<Host-variable>
FROM STMT_CNTL
WHERE <Conditions>

Above query gives SQLCODE as 100. It fetches the record when executes in SPUFI/QMF.

Thanks,
Rahul

dbzTHEdinosauer · Posted: Tue Jun 17, 2008 1:56 pm

either your secret WHERE conditions have something wrong or your from table is not the table that you think.

rahul_kk · New User Joined: 24 Nov 2006 Posts: 5 Location: Chennai

Hi,

I displayed the values passed in WHERE conditions before and after the query. With same values the query executed separately in SPUFI/QMF. If "from table" is not a table, then it should give some other error instead of giving SQLCODE = 100. Same query with same table name and conditions, executed in SPUFI/QMF.

Rahul

birdy K · New User Joined: 05 Mar 2008 Posts: 72 Location: chennai

You have not produce your "Where Clause" instead you are repeating the same [/quote]

sainathvinod · New User Joined: 01 Apr 2008 Posts: 11 Location: Chennai

Please verify that the DB2 region in which the query was executed independently and the DB2 region in which the program was compiled is one and the same.

Phrzby Phil · Posted: Tue Jun 17, 2008 5:55 pm

Please also list some selected rows without the WHERE clause so we can see that there are in fact matching rows.

Craq Giegerich · Posted: Tue Jun 17, 2008 5:59 pm

Do you have a null indicator field for the host-variable and are you checking it?

SSR · New User Joined: 26 Feb 2006 Posts: 38

Hi,

Check if you have run the query and bound the plan to the same region and qualifier.

Regards
Sundar