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Enhance the EXISTS-to-JOIN optimization so that it works on EXISTS subqueries

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that do not have a WHERE clause, and so that it works on nested EXISTS
subqueries.

FossilOrigin-Name: c1d5295724f9cf7f49e0786d28016eff2d268a2b670f934d24c76787626089db
This commit is contained in:
drh
2025-07-05 23:33:21 +00:00
parent 45bc9b9f97
commit 8bc112e3e4
4 changed files with 24 additions and 16 deletions
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test/existsexpr.test
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@ -193,7 +193,7 @@ do_subquery_test 3.7 1 {
4 4 4
}
do_subquery_test 3.8 1 {
do_subquery_test 3.8 0 {
SELECT * FROM y1 WHERE EXISTS ( SELECT a+1 FROM y2 )
} {
1 1 1