Hi,
INNER JOIN "entrys"
ON
1 = "entrys"."log-id" AND
"specific-entrys"."key" = "entrys"."key" AND
"user" = "entrys"."region" AND
"specific-entrys"."entry-number" = "entrys"."entry-number"
AND "entrys"."key" > "G"
I can't solve your problem, but the PRIMARY KEY for "entrys" is
("log-id", "entry-number")
. You shouldn't need to match so many different fields when
just two of them, which you already have values for, narrow your
search down to a single row. Though I may be missing something.
In past attempts at improving query performance these have been added to
encourage it to use an index that it can do a SCAN thru' rather than the
table that it would need to do a SEARCH thru'.
I'm pretty happy with the indexes it's currently choosing (apart from the
MATERIALIZE). Adding a covering index on timestamp theoretically improves
things but doesn't seem to make a (measurable) difference in practice with
current data sizes.
Best wishes,
@ndy
--
andy...@ashurst.eu.org
http://www.ashurst.eu.org/
0x7EBA75FF
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