be reordered. [forum:/forumpost/6650cd40b5634f35|forum post 6650cd40b5634f35].
This is probably more strict that necessary to get correct behavior,
but for the first release that supports RIGHT/FULL JOIN it is perhaps better
to be correct than fast. A less strict constraint might be to prohibit
FROM-clause terms that originate on the left side of a RIGHT JOIN from
crossing from the right side to the left side of a LEFT JOIN. Revisit this
later.
FossilOrigin-Name: 238453ffab0ba1bdddb529be35da82d5e8fb312a9574003a5441f455e601a909
RIGHT or LEFT join anywhere in the query. Other RDBMSes prohibit this always,
but SQLite must allow ON clauses to reference tables to their right for legacy
compatibility, unless there is a RIGHT or LEFT join someplace in the query,
in which case there is no legacy to support.
FossilOrigin-Name: e615dbe02ca949252d1526ed5c48f8ce08159773ea2008ce666484379d0d9854
[forum:/forumpost/57bdf2217d|forum post 57bdf2217d]. This check-in
should complete the fix.
FossilOrigin-Name: fb0a23b6789da8e934562ce9ebd9d58ea13a10fd10dee5cbfc7ac8f394e1aeec
strength reduction if the query also contains a RIGHT JOIN. Fix for
the problem identified by
[forum/forumpost/b40696f50145d21c|forum post b40696f50145d21c].
FossilOrigin-Name: b1be2259e2e08ec22a88bc9a18b3ab4d83246ad4c635c05cdf80d3eff84df06a
in the presence of RIGHT JOINs also apply to the use of WHERE clause terms
to manufacture automatic indexes. This fixes a problem identified by
[forum:/forumpost/51e6959f61|forum post 51e6959f61].
FossilOrigin-Name: 342c501f532523347e6c339351e02043dd6ee9e11a291224b65ea72bd6c2ba40
as this can confuse RIGHT JOIN. Fix for the problem reported by
[forum:/forumpost/8e4c352937e82929|forum post 8e4c352937e82929].
FossilOrigin-Name: cab9b4cccd13bf0ab2bc38dc9a9c04ddd34e29c65ab6aef07b6bb3c31a43bece
the right operand of a RIGHT JOIN, since this can cause problem if the
constraint implies a not-NULL value for one of the columns for the left
operand of the same join. See
[forum:/forumpost/206d99a16dd9212f|forum post 206d99a16dd9212f].
FossilOrigin-Name: 4a31b7942a15c9c4363477365784d6d4ac5b1bbe8ff8aeaf2dd3d6532bf8bc96
the right moment - not too early and not too late. Fix for the problem
reported by [forum:/forumpost/3902c7b833|forum post 3902c7b833].
FossilOrigin-Name: 3869fd9a2b9483cbbf83d8f369c1744abc42f12e63abba402be35dd7e136161c
FROM clause terms that are even further to the right. Fix for the issue
identified by [forum:/forumpost/5cfe08eed6|forum post 5cfe08eed6].
FossilOrigin-Name: 4be0c60e38edc5d5bfd72bb35a3c91c55240b4e6313a40614beb60f1ab9d9f4c
of the join, just convert the ON clause to an ordinary WHERE clause term,
in order to be compatible with older versions of SQLite. See
[forum:/forumpost/687b0bf563a1d4f1|forum thread 687b0bf563a1d4f1] for details.
FossilOrigin-Name: 2b6ebba26d936ae7b9acf7d4bd15e82cbfabda22e1044b3dd838c7b07095100e
for LEFT JOIN versus RIGHT JOIN that protect legacy behavior.
[forum:/forumpost/e90a8e6e6fa652ac|Forum thread e90a8e6e6fa652ac].
FossilOrigin-Name: 2c586060a016f5481bad29bfb8f4ac4e1204075afdd0fa1851fbbcf2abda4893
the index might not be positioned on the correct row when running the
the right-join no-match loop.
dbsqlfuzz 39ee60004ff027a9e2846cf76e02cd5ac0953739
FossilOrigin-Name: 2277f9ba7087dd993ac0f4007c523aa9cf74dba187f53af03d8c164886726fee
join that is an operand to a RIGHT JOIN. Fix for issue identify by
[forum:/forumpost/c06b10ad7e|forum post c06b10ad7e].
FossilOrigin-Name: 9d17233c7d98bf25c1a518d067e778708b3db6d6302edd8d7e376ba0ba4f1c30
reuse the same ephemeral cursor of a list subquery when that subquery is
reused, as it does not work in cases where the list subquery is used both
for lookups and for scans.
FossilOrigin-Name: 12ee29d632ae4b585ef6bc07d3289d00c121268945dffd5673b251d95874e3f8
logic for a subquery on the right-hand side of an IN operator. The code still
needs simplification.
FossilOrigin-Name: a193749730d6cfba617f2a64e7254c78f92bbf29b109c19055fc33f6cc643d4c
a right-hand side subquery is used as a constraint that needs to be processed
by the RIGHT JOIN non-matched logic.
FossilOrigin-Name: bb2798be3fb5737827eec505db2d4c8cb510d227d98fc26ce748bf2da7e8b382
able to reuse an IN operator that has an invariant subquery on its right-hand
side while coding the non-matched loop of a RIGHT JOIN.
dbsqlfuzz 19f1102a70cf966ab249de56d944fc20dbebcfcf
FossilOrigin-Name: 56dd3065469e49320b13af039471b3f0b85e6f7368cfd97b1cdc0cf8fa8e1956
right-join body subroutine from an issue to an optimization opportunity.
FossilOrigin-Name: 829d49f27c041651ffeadc1397e4dd87a9994c9290e13b93542dbd2c514769cd
the join8 test module, with tests that deliberately fail in order to remind
us to fix the issues.
FossilOrigin-Name: 2c4ee723f4d0591d09776adfb82246bfa89153ab390b8b3f1878d1cdc43d68c8
