I am using 10. 00.xC7, the query could not event run.
The error is:
"Column (rownum) not found in any table in the query (or SLV is undefined)"
Thank you anyway
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Question
How to get row number with SELECT statement
I would like to know whether it is possible to get row number with SELECT statement in Informix. If yes, how?
For example, SELECT Some_Function() AS ROWNUM, Col1, Col2 FROM TableA
My expected result would be:
ROWNUM | Col1 | Col2
1 | XXX | YYY
2| AAA | BBB
...
Thank you in advance
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by: Tengri_LethosPosted on 2008-04-29 at 12:15:17ID: 21465175
Maybe this answers your question:
http://www.iiug.org/forums
"Jean, FYI, I don't see it documented on that page, but there is also the new
related pseudo-column ROWNUM in 10.00.xC3+ which can be used to either return
the ordinal number of the row within the select set or even to filter rows, so:
SELECT *, ROWNUM
FROM atable
WHERE ROWNUM BETWEEN 11 AND 20
ORDER BY 1;
is equivalent to:
SELECT LIMIT 10 SKIP 10 *, ROWNUM
FROM atable
ORDER BY 1;
Opens up the possibility of random sampling etc.!"