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Kmr.deepakcs
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Joined: 11 Oct 2013
Posts: 37
Location: India
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I have a question which i have asked in csc interview.
what will the sqlcode of this query after execution.
select count(*) from tablename.
even there is no rows in table.
My answer: I told it will give sqlcode=100.
Please give your suggestion.....
Deepak kumar |
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Pandora-Box
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| Did you try to execute and see what happens? |
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gylbharat
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| Code: |
---------+---------+---------+---------+---------+---------+---------+---------+
SELECT COUNT(*)
FROM QUALIFIER.TABLE
---------+---------+---------+---------+---------+---------+---------+---------+
---------+---------+---------+---------+---------+---------+---------+---------+
0
DSNE610I NUMBER OF ROWS DISPLAYED IS 1
DSNE616I STATEMENT EXECUTION WAS SUCCESSFUL, SQLCODE IS 100
---------+---------+---------+---------+---------+---------+---------+---------+
DSNE614I AUTOCOMMIT IS NO; NO CHANGES COMMITTED
---------+---------+---------+---------+---------+---------+---------+---------+
DSNE601I SQL STATEMENTS ASSUMED TO BE BETWEEN COLUMNS 1 AND 72
DSNE620I NUMBER OF SQL STATEMENTS PROCESSED IS 1
DSNE621I NUMBER OF INPUT RECORDS READ IS 2
DSNE622I NUMBER OF OUTPUT RECORDS WRITTEN IS 16
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Kmr.deepakcs
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Joined: 11 Oct 2013
Posts: 37
Location: India
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Thanks bharat. |
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Nic Clouston
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Location: Hampshire, UK
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| I believe SPUFI always gives a return code of 100 on a successful SELECT. Certainly used to. You really need to try this in batch. I cannot as we do not use DB2 here. |
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Anuj Dhawan
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Joined: 22 Apr 2006
Posts: 6248
Location: Mumbai, India
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| Nic Clouston wrote: |
| I believe SPUFI always gives a return code of 100 on a successful SELECT. Certainly used to. You really need to try this in batch. I cannot as we do not use DB2 here. |
Yes, that's correct and an annoying quirk (for me) of SPUFI. I had to create a report once, derived from a DB2 Table, and I ended up using the Batch Job instead of SPUFI as having SQLCODE=+100 was another test case to capture... |
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Pandora-Box
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| But again SQLCODE = + 100 is clear that there is no row to process further something like equivalent to EOF |
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Nic Clouston
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| But in batch does SELCT COUNT(col) FROM table; return SQLCODE=+000 or SQLCODE=+100. I think +000 because the SELECT has successfully returned data (a count of 0). But, as I said, I cannot test this. |
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Anuj Dhawan
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Joined: 22 Apr 2006
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Location: Mumbai, India
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| Spufi always returns +100 when number of lines are less than "MAX SELECT LINES". SPUFI fetches rows in a loop; the attempted FETCH after the last row gets SQLCODE +100 (row not found), and this is the code that SPUFI reports for the entire SELECT. You're correct Nic, in batch SQLCODE=+000 will be returned back. |
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Nic Clouston
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Location: Hampshire, UK
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| Thanks, Anuj. Another piece of "working it out mentally" gives RC=0! |
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Kmr.deepakcs
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Joined: 11 Oct 2013
Posts: 37
Location: India
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thanks anuj and nic.
I thought answer is rc=0, bt i said sqlcode=100...my fault
But thanks for everyone for giving your valuable suggestions..........
Deepak kumar |
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Anuj Dhawan
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Joined: 22 Apr 2006
Posts: 6248
Location: Mumbai, India
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| You're welcome and Good Luck! |
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