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Use a Bloom filter to improve performance of IN operators when the RHS of

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the IN operator is a subquery.

FossilOrigin-Name: 1933496539c19cbf429a39d6b0b1c6b1b2af50733a3c4aea4920990ced652f6a
This commit is contained in:
drh
2024-07-03 17:51:48 +00:00
parent 3d24637325
commit 6172e4355f
5 changed files with 51 additions and 11 deletions
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src/sqliteInt.h
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@@ -3622,7 +3622,11 @@ struct Select {
** SRT_Set The result must be a single column. Store each
** row of result as the key in table pDest->iSDParm.
** Apply the affinity pDest->affSdst before storing
** results. Used to implement "IN (SELECT ...)".
** results. if pDest->iSDParm2 is positive, then it is
** a regsiter holding a Bloom filter for the IN operator
** that should be populated in addition to the
** pDest->iSDParm table. This SRT is used to
** implement "IN (SELECT ...)".
**
** SRT_EphemTab Create an temporary table pDest->iSDParm and store
** the result there. The cursor is left open after