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

 
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rahul_kk

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Joined: 24 Nov 2006
Posts: 5
Location: Chennai

PostPosted: Tue Jun 17, 2008 11:54 am    Post subject: SELECCT, MAX() queries not working on a DB2 table. Reason???
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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
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enrico-sorichetti

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Joined: 14 Mar 2007
Posts: 10234
Location: italy

PostPosted: Tue Jun 17, 2008 12:37 pm    Post subject: Reply to: SELECCT, MAX() queries not working on a DB2 table.
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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
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rahul_kk

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Joined: 24 Nov 2006
Posts: 5
Location: Chennai

PostPosted: Tue Jun 17, 2008 1:09 pm    Post subject:
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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
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dbzTHEdinosauer

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Joined: 20 Oct 2006
Posts: 6966
Location: porcelain throne

PostPosted: Tue Jun 17, 2008 1:56 pm    Post subject:
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either your secret WHERE conditions have something wrong or your from table is not the table that you think.
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rahul_kk

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Joined: 24 Nov 2006
Posts: 5
Location: Chennai

PostPosted: Tue Jun 17, 2008 2:06 pm    Post subject:
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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
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birdy K

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Joined: 05 Mar 2008
Posts: 72
Location: chennai

PostPosted: Tue Jun 17, 2008 3:16 pm    Post subject:
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You have not produce your "Where Clause" instead you are repeating the same [/quote]
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sainathvinod

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Joined: 01 Apr 2008
Posts: 11
Location: Chennai

PostPosted: Tue Jun 17, 2008 5:01 pm    Post subject:
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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.
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Phrzby Phil

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Joined: 31 Oct 2006
Posts: 962
Location: Richmond, Virginia

PostPosted: Tue Jun 17, 2008 5:55 pm    Post subject:
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Please also list some selected rows without the WHERE clause so we can see that there are in fact matching rows.
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Craq Giegerich

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Joined: 19 May 2007
Posts: 1512
Location: Virginia, USA

PostPosted: Tue Jun 17, 2008 5:59 pm    Post subject:
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Do you have a null indicator field for the host-variable and are you checking it?
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SSR
Warnings : 1

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Joined: 26 Feb 2006
Posts: 38

PostPosted: Wed Jun 18, 2008 1:38 pm    Post subject: Reply to: SELECCT, MAX() queries not working on a DB2 table.
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Hi,

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

Regards
Sundar
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