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Commit Graph

17 Commits

Author SHA1 Message Date
drh
c93bf1d462 Improvements to the decision of when to check ON constraints for an inner
join that is an operand to a RIGHT JOIN.  Fix for issue identify by
[forum:/forumpost/c06b10ad7e|forum post c06b10ad7e].

FossilOrigin-Name: 9d17233c7d98bf25c1a518d067e778708b3db6d6302edd8d7e376ba0ba4f1c30
2022-05-14 15:59:42 +00:00
drh
f69dad8c53 Walk back the optimization from check-in [cc458317bd77046c] that tries to
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
2022-05-13 19:50:29 +00:00
drh
d631c6af80 Ensure that ON clauses are applied to the correct outer join.
FossilOrigin-Name: c7e3a13a3288c577209be99c630fbe924e19880e8af1aa8a83b517acaa8b43d7
2022-05-12 11:56:44 +00:00
drh
825ecf9c05 New requirement marks.
FossilOrigin-Name: e8479e56c615a6eb38b58e6d360bea8528ec14a9d7b0798b95d3eb513bd08f0f
2022-05-10 18:43:54 +00:00
drh
11d63ebf2c Fix ON-clause constraint usage for FULL and RIGHT JOINs.
FossilOrigin-Name: 544268a723cafdf0460221f5f018e752836436bad0fac90852cec70e63d9dcde
2022-05-04 14:45:19 +00:00
drh
7497364749 Simplified fix to the problem with subroutine reuse in the RIGHT JOIN no-match
logic for a subquery on the right-hand side of an IN operator.  The code still
needs simplification.

FossilOrigin-Name: a193749730d6cfba617f2a64e7254c78f92bbf29b109c19055fc33f6cc643d4c
2022-04-30 18:40:22 +00:00
drh
a25bbaf74a Further improvements to codeEqualityTerm() for cases when an IN operator with
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
2022-04-30 00:06:52 +00:00
drh
3d5665366f Enhance the codeEqualityTerm() routine inside the code generator so that it is
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
2022-04-29 19:00:11 +00:00
drh
ecb386b71f Prevent the ORDER BY LIMIT optimization from running if the innermost loop
is a right-join, as doing so will get an incorrect answer.

FossilOrigin-Name: 3aefc874d31885c64a5e02868edb2aa56a2b4429252d494e67e4088a9298ce5b
2022-04-23 19:21:47 +00:00
drh
1c69bc912d Previous fix to join8.test needs a return.
FossilOrigin-Name: 7b4cd705a0339ddacad19564b07e50e4f68f54bf14dd2cd5d59b39314a4d2523
2022-04-21 23:34:35 +00:00
drh
abb4e7598c Disable join8.test if the build lacks support for virtual tables.
FossilOrigin-Name: 94e1916a2f594e6b8a54734027deb99688244d05cefb3c78f23afab49af1e08f
2022-04-21 23:01:24 +00:00
drh
503ad9c72d Make sure the code generator knows to invoke row-value subroutines which
running the right-join post-processing loop.

FossilOrigin-Name: fd328e52aee1dace12b1c2f44b6f7e9d15d8f77c8e9d9e3d85840a129a4b1808
2022-04-21 14:48:40 +00:00
drh
a1848a5d22 Change the row-value initialization subroutine call from within the
right-join body subroutine from an issue to an optimization opportunity.

FossilOrigin-Name: 829d49f27c041651ffeadc1397e4dd87a9994c9290e13b93542dbd2c514769cd
2022-04-18 11:22:46 +00:00
drh
d875c7eefe Do not allow an empty table bypass to jump outside of a right-join body
subroutine.

FossilOrigin-Name: 1549dcd2353903b70abadd428eeef971ab940df04fb05a6b83b04ee30932db6d
2022-04-18 10:26:50 +00:00
drh
6fda176ba6 New test cases, one of which is failing, indicating a bug that needs fixing.
FossilOrigin-Name: bd5fd68435ff068c18d7d46b33cf7591263a03c32a917a7df7c087b08c573cc8
2022-04-16 23:38:29 +00:00
drh
a51379ad78 Record the three known big issues with the current RIGHT JOIN design in
the join8 test module, with tests that deliberately fail in order to remind
us to fix the issues.

FossilOrigin-Name: 2c4ee723f4d0591d09776adfb82246bfa89153ab390b8b3f1878d1cdc43d68c8
2022-04-14 20:43:22 +00:00
drh
f7309bce10 Ensure that the JT_LTORJ bit in the SrcItem.fg.jointype is preserved during
query flattening.

FossilOrigin-Name: 61259050152321bc57dbdfdc3edcabb4f18c021b1ee0491c1e04ae24c7a59d89
2022-04-12 20:20:54 +00:00