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Oracle Heterogeneous Services Doesn't Pass Rownum (Doc ID 2423601.1)

Last updated on AUGUST 04, 2018

Applies to:

Oracle Database - Enterprise Edition - Version 12.1.0.2 and later
Information in this document applies to any platform.

Goal

Is there a reason why Oracle does not substitute ROWNUM for LIMIT clause?

It's appears that ROWNUM is purely Oracle specific.  Is there anyway substitute it to LIMIT, TOP, FIRST, etc. depending on the destination database type?  If another condition is present, Oracle will first fetch all rows that match to that condition and only afterwards apply the ROWNUM.
 

Solution

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