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Relax query flattener constraint (3b) and thereby allow flattening the RHS of

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a LEFT JOIN even if the RHS contains a virtual table.  This is a performance
optimization that would not normally be found on a patch branch, but
downstream needs it and does not want to wait on the next full release.

FossilOrigin-Name: 916dde1f409d5cb9300da464daa1e06e6fcee3d8a6a68d469fa9580ae8700bfa
This commit is contained in:
drh
2025-06-03 17:46:24 +00:00
parent 9412d98419
commit d95ba2fb03
4 changed files with 14 additions and 17 deletions
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5
test/fts3join.test
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@ -97,11 +97,8 @@ do_eqp_test 4.2 {
WHERE t4.y = ?;
} {
QUERY PLAN
|--MATERIALIZE rr
| `--SCAN ft4 VIRTUAL TABLE INDEX 3:
|--SCAN t4
|--BLOOM FILTER ON rr (docid=?)
`--SEARCH rr USING AUTOMATIC COVERING INDEX (docid=?) LEFT-JOIN
`--SCAN ft4 VIRTUAL TABLE INDEX 3: LEFT-JOIN
}
finish_test