Tom Lane wrote:
Bruce Momjian <br...@momjian.us> writes:
OK, I put it back, but I still feel we might not need it anymore.

Even if you're willing to believe that the questions will stop once
we have this feature, that won't happen for more than a year.

As a general comment on this, I've gotten two rounds of complaints about MySQL migrations bit by this problem in the last year, and I found it handy to point them to the FAQ entry. Even if one of the forms starts to work in 9.1 eventually, I'd like to see a comment about this issue hang around somewhere for future reference. Note that in both cases the whole operation involved was rather brain dead and returning silly indeterminate results in MySQL, but they didn't realize it. No objections to the PostgreSQL "limitation" once they understood it was fixing a subtle bug in the original too.

I was thinking of adding this one as an example for my next MySQL vs. PostgreSQL paper update, it's a great example of the focus on correctness differences between the two databases.

--
Greg Smith  2ndQuadrant US  Baltimore, MD
PostgreSQL Training, Services and Support
g...@2ndquadrant.com   www.2ndQuadrant.us

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