#13907 [Opn->Bgs]: Oracle Fetch row by row number

ID: 13907 Updated by: tony2001@php.net Reported By: jh at synergy dot cx -Status: Open +Status: Bogus Bug Type: Feature/Change Request Operating System: all PHP Version: 4.0.6 Assigned To: maxim New Comment: Yes, you have to emulate LIMIT in Oracle using 3 nested SELECTs. This is the way it works. Previous Comments: ------------------------------------------------------------------------ [2003-01-30 06:29:17] maxim@php.net Just to follow up: Yes, to select the first 6 rows you can use subselects (besides there are other methods): SELECT * FROM (SELECT ename, hiredate FROM emp ORDER BY hiredate) WHERE ROWNUM < 6 Nevertheless, you still have selected the full stream in the subselected query *and* from the received result you've extracted the first 6 rows. What I am wondering here is, whether it could actually make any sense of having the offset functions that pretty much limit the Fetch loop inside OCI8 extension. Doesn't seem to me a clean method, but if this saves on speed and functionality/usability there is then a space for this function. Will look into it in details ------------------------------------------------------------------------ [2003-01-30 06:23:40] maxim@php.net It is probably true. Will soon close it as bogus. I am still curious to see whether there is any "technical" way for it through OCI first. ------------------------------------------------------------------------ [2003-01-29 12:07:11] michael dot mauch at gmx dot de Probably he/she doesn't really need a new function, but only a hint how to simulate the limit/offset syntax of MySQL/Postgresql. Without the help of <http://www.dclp-faq.de/q/q-oracle-limit.html> (in German, but not much text), I certainly would not know how to do it, although I asked our local SQL gurus. ------------------------------------------------------------------------ [2003-01-29 08:59:05] maxim@php.net Well, this wouldn't make much sence as this should be controlled by your SQL. What's the point to grab the whole table in your buffer to then fetch only a few rows somewhere in the middle? Anyhow, will assign it to myself for now. ------------------------------------------------------------------------ [2001-11-02 05:37:16] jh at synergy dot cx Currently there's no way of fetching a row by row number. OCIFetchStatement() fetches all rows returned by a query. OCIFetchInto() only allows to return the NEXT row. It would make sense to be able to selectively fetch a subset of rows or single rows by row number for large row lists. ------------------------------------------------------------------------ -- Edit this bug report at http://bugs.php.net/?id=13907&edit=1