> Well - now that I test it, it appears you are correct, temp table COPY
> bypasses WAL - thanks for pointing it out!

RIght.  The problem is bypassing WAL for loading new "scratch" tables which 
aren't TEMPORARY tables.   We need to do this for multi-threaded ETL, since:
a) Temp tables can't be shared by several writers, and
b) you can't index a temp table.

Josh Berkus
Aglio Database Solutions
San Francisco

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