Here is a patch that enables IS NULL to use a btree index. After
mentioning it was really hard, I had a brainwave and here are the 80
lines of code necessary to make it work. What surprised me is that in
various important parts most of the work had actually been done already.
Actually, it's two
Martijn van Oosterhout kleptog@svana.org writes:
Actually, it's two changes:
- In the btree index code, if SK_ISNULL is set, do the right thing
- If the query has col IS NULL, expand that to col =3D NULL in the index
quals
This is a bad idea, because it translates x IS NULL into x = NULL
FAQ_DEV updated. Thanks.
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[EMAIL PROTECTED] wrote:
Though there is a description for the profile in doc/FAQ_DEV:
You can also compile with profiling to see what functions are taking
execution time. The backend