Re: Rewrite, normal execution vs. EXPLAIN ANALYZE

On Thu, Jul 22, 2010 at 08:43:35PM +0300, Marko Tiikkaja wrote:
> Hi,
>
> From the code I understood that when executing a query "normally",
> in READ COMMITTED mode, we take a new snapshot for every query that
> comes out of rewrite. But in an EXPLAIN ANALYZE, we only update the
> CID of the snapshot taken when the EXPLAIN started.
>
> Did I misunderstand the code? And if I didn't, why do we do this
> differently?

You mentioned in IRC that this was in aid of getting wCTEs going. How
are these things connected?

Cheers,
David.
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