On Thu, Jan 29, 2009 at 11:45:42PM -0500, Bruce Momjian wrote: > > Sorry, maybe I wasn't clear. On this page: > > https://fedorahosted.org/spacewalk/wiki/PostgresTechnicalApproach > > we list the four query types: > > 1. work unchanged in both Oracle and Postgres > 2. can be rewritten to work on both databases, e.g. ANSI joins, > CURRENT_TIMESTAMP, CASE instead of decode(), COALESCE instead of NVL() > 3. (same) but requires db changes, e.g. add compatibility functions > from Orafce > 4. need to create a Postgres-specific version of the query > > Previously I mentioned decode() in #3, but I have now updated the wiki > to mention the use of CASE intead of decode, etc. I think we should be > doing #3 only if we can't easily rewrite the query to be a #2.
Any change which requires #2 will need to be QA'ed in Oracle / Satellite as well. While it is a noble goal to have the codebase in pure ANSI syntax, milestone-wise it will be much more feasible to start with compatibility layer (#3) first and not depend on #2. Including for DECODE. -- Jan Pazdziora Satellite Engineering, Red Hat _______________________________________________ Spacewalk-devel mailing list Spacewalk-devel@redhat.com https://www.redhat.com/mailman/listinfo/spacewalk-devel
