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* Improvement on the previous check-in.drh2022-08-03
| | | FossilOrigin-Name: c1ab0ea2959259cbd29f624bfd5e7366035f2dbcaab72c0bf55723c0919b7a79
* For an IN operator used with a RIGHT JOIN, use the number of terms in thedrh2022-08-03
| | | | | | vector, not the number of equality terms, to size the column map. dbsqlfuzz 14cfdad6ca45e607163f54049ddf5065183dc657. FossilOrigin-Name: b184c8d9222da6b420b5d7c439bbe4b737d92ffa27f5e933f4e1a9c8117b0ee5
* Small performance increase and size reduction by splitting out thedrh2022-07-25
| | | | | sqlite3VdbeGetLastOp() from sqlite3VdbeGetOp(). FossilOrigin-Name: 92ac01d41d46ab73e189b1e5596ea63e5edb5b15639c5d7bdb981b95366c069b
* Candidate fix for the problem with row-value WHERE clause constraints ondrh2022-06-01
| | | | | a RIGHT JOIN. FossilOrigin-Name: fdd782a7bb217e2aceda97a588c0d7874ee19885abfcf0658472d6c3387da6ee
* Add back in a test case for ON-clauses that was removed yesterday bydrh2022-05-31
| | | | | [3869fd9a2b9483cbf] but which turned out to be necessary after all. FossilOrigin-Name: aba52a90eef2a5d06e7c499fe84b2efcde7f01e67129058f8223a6a0272aacb9
* For an outer join, then ON-clause constraints need to be evaluated at justdrh2022-05-30
| | | | | | 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
* Improvements to the decision of when to check ON constraints for an innerdrh2022-05-14
| | | | | | join that is an operand to a RIGHT JOIN. Fix for issue identify by [forum:/forumpost/c06b10ad7e|forum post c06b10ad7e]. FossilOrigin-Name: 9d17233c7d98bf25c1a518d067e778708b3db6d6302edd8d7e376ba0ba4f1c30
* Transitive equality constriants do not work on a RIGHT JOIN, since thedrh2022-05-13
| | | | | right-hand side might be a non-matched row. FossilOrigin-Name: 0f96810b840dd6f209562635b21f55a7ed6210c01336fcfeb3b79e08a615a28d
* Walk back the optimization from check-in [cc458317bd77046c] that tries todrh2022-05-13
| | | | | | | 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
* Defer generating WHERE clause constraints for a RIGHT JOIN until after thedrh2022-05-13
| | | | | | | ON-clause processing for the RIGHT JOIN has done its own row elimination. This fixes and incorrect output from some RIGHT JOINs that was identified by [forum:/forumpost/41cc3851d864c5e6|forum post 41cc3851d864c5e6]. FossilOrigin-Name: 238d9c247cf69cc77fdb1af9d42ebe258610a533ac4204e2ddf8af17f24d18c4
* Improved names for flags on the Expr object: EP_FromJoin becamesdrh2022-05-13
| | | | | EP_OuterON and EP_InnerJoin becomes EP_InnerON. FossilOrigin-Name: 1ffea07ff98b894729c698b681cc7433df3bbfccd8a0529a706908602a636937
* Ensure that ON clauses are applied to the correct outer join.drh2022-05-12
| | | FossilOrigin-Name: c7e3a13a3288c577209be99c630fbe924e19880e8af1aa8a83b517acaa8b43d7
* Code EP_InnerJoin constraints at the same time that EP_FromJoin constraintsdrh2022-05-04
| | | | | are coded. FossilOrigin-Name: b57033d2af2196e2f7e5305f3504fc20da5cadeb66026d38b999fe909cab8ac5
* Fix the Bloom filter pull-down optimization so that it jumps to the correctdrh2022-05-03
| | | | | | place if it encounters a NULL key. Fix for the bug described by [forum:/forumpost/2482b32700384a0f|forum thread 2482b32700384a0f]. FossilOrigin-Name: 6eda9b1a7784cf6d58c8876551f67ab98e78a08e726a0579d4def5ba881985bb
* Remove a testcase() macro taht was made obsolete by [a8da85c57e07721d].drh2022-05-02
| | | FossilOrigin-Name: 053cf45ecaa7eac8cc64c7b2672807f736a45575a84b426263b2e1feb060b401
* Improvement on check-in [a193749730d6cfba] so that the subroutine call todrh2022-05-02
| | | | | | the IN operator right-hand side generator from the RIGHT JOIN no-match logic does not generate unreachable byte code. FossilOrigin-Name: cc458317bd77046c4328715ae9e3409f3f4cd422a01162cb33405ef3a142b0a3
* Simplified fix to the problem with subroutine reuse in the RIGHT JOIN no-matchdrh2022-04-30
| | | | | | logic for a subquery on the right-hand side of an IN operator. The code still needs simplification. FossilOrigin-Name: a193749730d6cfba617f2a64e7254c78f92bbf29b109c19055fc33f6cc643d4c
* Preserve the COLLATE operator on an index on an expression when resolvingdrh2022-04-30
| | | | | | the use of that expression into a reference to the index. See [forum:/info/7efabf4b03328e57|forum thread 7efabf4b03328e57] for details. FossilOrigin-Name: a8da85c57e07721dc1c918d67433d6c99ce48421e369123cc3194d855e55f7e8
* Further improvements to codeEqualityTerm() for cases when an IN operator withdrh2022-04-30
| | | | | | 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
* Enhance the codeEqualityTerm() routine inside the code generator so that it isdrh2022-04-29
| | | | | | | 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
* For debug builds, if the RIGHT JOIN body subroutine contains a jump thatdrh2022-04-23
| | | | | | | escapes the subroutine, then abort the prepared statement with a descriptive error and SQLITE_INTERNAL. This extra sanity check causes many tests to fail. FossilOrigin-Name: 2c5bb2bff26cc70d8cac78ddd12d5ac37ab1472f5f88afbd975950a18ac2804d
* Make sure the code generator knows to invoke row-value subroutines whichdrh2022-04-21
| | | | | running the right-join post-processing loop. FossilOrigin-Name: fd328e52aee1dace12b1c2f44b6f7e9d15d8f77c8e9d9e3d85840a129a4b1808
* Ensure that left-hand side WITHOUT ROWID tables are set to OP_NullRow priordrh2022-04-18
| | | | | | to running the right-join loop. This fixes a problem introduced by the previous check-in. FossilOrigin-Name: aab7665ce6c004df701a72aef1a5135f2c78f16c6ff728a00076afb66ba9d3a0
* Fix problems with WHERE clauses that follow multiple FULL JOINs. Thisdrh2022-04-18
| | | | | | introduces some new faults in the tests, probably due to something unrelated. FossilOrigin-Name: 95b242d4c2fed7c713299565ac1010f8a7534a5695589e87d5a0204c7bf5f3dc
* Do not allow an empty table bypass to jump outside of a right-join bodydrh2022-04-18
| | | | | subroutine. FossilOrigin-Name: 1549dcd2353903b70abadd428eeef971ab940df04fb05a6b83b04ee30932db6d
* Rerun the subroutines that compute row-values if necessary from withindrh2022-04-14
| | | | | the RIGHT JOIN body subroutine. FossilOrigin-Name: 9b9038bcd0ab5c4f01661456635526cef764f854ff24018a5e6e43825d07eb59
* Move the explain comment for the RIGHT-JOIN post-processing loop to thedrh2022-04-13
| | | | | | verify beginning of the loop - to make the start of the loop clearer to human bytecode readers. FossilOrigin-Name: 7ed2a271e6fcbb5e69a7f3a88d3f45fe6318819c0cc6a0dcc06c3dae5aa1503f
* Add missing VdbeCoverage() macros on new branch byte-code opcodes.drh2022-04-13
| | | FossilOrigin-Name: 218c7167e562f5c327124f02a92de85079315320a221fb0508310d927596b14c
* Factor out the RIGHT JOIN non-matched row loop from sqlite3WhereEnd(). Thisdrh2022-04-12
| | | | | | reduces the register pressure on that routine and helps it to run faster in the common case where there is no RIGHT JOIN. FossilOrigin-Name: beeecf1604d4fb11e45058f48cb2289c6542e0bc218d63a245198113d8d5476b
* Show LEFT and RIGHT JOIN processing in the EXPLAIN QUERY PLAN output.drh2022-04-11
| | | FossilOrigin-Name: d91faeffea5cf0585fb71e5311fdcc6b8be85c7e9c732050b4448e617c970101
* Merge the Expr.w.iJoin name change from trunk into the right-join branch.drh2022-04-11
|\ | | | | FossilOrigin-Name: 29927926eb32acd963e2c496ad67d55177615ec4150fd218afaf2f9a730cabec
| * Rename the Expr.w.iRightJoinTable to just Expr.w.iJoin, so that the wordsdrh2022-04-11
| | | | | | | | | | | | "RightJoin" in the former name do not lead readers to believe that this has something to do with RIGHT JOINs in particular. FossilOrigin-Name: e8c00442d2daedec079748d13147bf73b0ec3c3cf432bce2cdccb706bdff2853
* | The interior of the RIGHT JOIN loop is now a subroutine.drh2022-04-09
| | | | | | FossilOrigin-Name: 549f5a7ee639de80f049445002f58e93c805f9a3d3db1987ec9d139ccef4805e
* | A few bits and bobs of code generation toward getting RIGHT JOIN to work.drh2022-04-09
| | | | | | | | | | Much more remains to do. FossilOrigin-Name: 55b4543122646997d928598343bc467c993f971e86e9037c85430cc948750576
* | Merge the sqlite3WhereMalloc() routine from trunk into the right-join branch.drh2022-04-09
|\| | | | | FossilOrigin-Name: b1b3845aa38f469a27f07c8f6e8a98334f7967b19661ee4cf155d6997afd9d4c
| * The sqlite3WhereMalloc() routine allocates memory that is automaticallydrh2022-04-09
| | | | | | | | | | deleted when the corresponding WhereInfo object is destroyed. FossilOrigin-Name: f237e1d8cc41b937f34288daebfacf5f7b0990a807a805e0cb6b45bc730192d6
* | Preliminary code to support RIGHT JOIN. Everything seems to work, except thatdrh2022-04-08
|/ | | | | | the code to compute the unmatched rows for the RIGHT JOIN has not yet been added, so the result of a RIGHT JOIN is currently the same as an INNER JOIN. FossilOrigin-Name: 415abd6731b8e8a605adabfa6066c8a852a8531c300df41325d5f7e75cae5a70
* Enhance the EXPLAIN output formatting in the CLI so that the subroutine thatdrh2022-04-07
| | | | | implements the loop body for the multi-index OR optimization is indented. FossilOrigin-Name: c2965fea9df7076b235d3eadaf84f0a36242476d0329030b0e57557b66e2540c
* Fix the code generated for vector IN operator constraints on virtual tablesdrh2022-03-07
| | | | | | | | | | so that they work even if the "omit" field in the sqlite3_index_info object is off. This has apparently never worked correctly before. Presumably, nobody has ever before written a virtual table that can use vector IN operator constraints and that relies on bytecode to double-check the constraints. Test cases in TH3. Problem discovered by dbsqlfuzz cab8e26194a40147627094f3c6849c0a7b1e0310. FossilOrigin-Name: 21b656572d066b640ff5774205a4f0db13e1b08a35d0fd484da9130e759b0c26
* Restore the ability to push-down OR subterms of the WHERE clause whendrh2022-03-03
| | | | | processing a multi-index OR. FossilOrigin-Name: d71fb6fdc32d2fce73059b6ab86d7d7bbc812c637469755dd45b6794aadc3a80
* Fix for the problem identified in drh2022-03-03
| | | | | | | | | | | | [forum:/forumpost/0cd8e058bf|forum post 0cd8e058bf]: When evaluating an multi-index OR, do not push down auxiliary WHERE clause terms that involve subqueries into the OR-subqueries. Otherwise, the covering-index optimizer might convert table-references into index-references for the particular OR index that is active for the branch in which the subquery subroutine is coded, and those index-references will not work if the subquery subroutine is invoked from a different OR branch that uses a different index. FossilOrigin-Name: 61a1c6dbd089979cbeb8b0c0c5ee1ab1abcb466be1d21a3a851be73c27e67a6c
* Bloom filter pull-down optimization is incompatible with Skip-Scan.drh2022-03-02
| | | | | | Make sure the query planner does not try to to both. [forum:/info/50a1bbe08ce4c29c|Forum post 50a1bbe08ce4c29c]. FossilOrigin-Name: ad3ffa1a75a5a032ebb64d8e014ee0a85c5e44b732e4b11bd67f31a59e729b94
* Improved comment on the codeDeferredSeek() routine. No code changes.drh2022-02-25
| | | FossilOrigin-Name: 54f49f65ac943263a1622b1efe519c8a61f30f23694fd4fec89ad2bf0e17b473
* Record the position of many identifiers in the parse using the newdrh2022-02-05
| | | | | | | Expr.w.iOfst field. This is done with the idea of providing offset results for sqlite3_error_offset() for a more kinds of errors, though that part is not yet implemented. FossilOrigin-Name: 32a3a53b62ab09ac2212905e7f42fe6f1b09d891e015203e5caf4cb16262f18e
* For the MULTI-INDEX-OR optimization, when pushing down WHERE clause terms fromdrh2022-02-04
| | | | | | | | the main query into the various OR-term subqueries, do not push down slices of a vector comparison, since the right-hand operand of the comparison might have only been initialized in a different OR branch that was not taken. dbsqlfuzz 80a9fade844b4fb43564efc972bcb2c68270f5d1. FossilOrigin-Name: 9f67ad00cd38b7c5ec6d14b379e1a611777bbdf6901d843a80712ba7d94d6d33
* Add new interfaces to enable virtual table to process IN operator constraintsdrh2022-02-01
| | | | | all at once, rather than one element at a time. FossilOrigin-Name: eb84b80e1f6d8c32bf0c9e1731f0233de0160a13f714f766779ae01fdf504e7b
* Query planner always honors the aConstraintUsage[].omit flag for thedrh2022-01-27
| | | | | SQLITE_INDEX_CONSTRAINT_OFFSET constraint. FossilOrigin-Name: 38c5151eb8cc789ad082a1b40d16b2ddb55454219bd685b6e420995af6a15f55
* Give the virtual table xBestIndex method access to (some) OFFSET and LIMITdrh2022-01-27
| | | | | clauses. FossilOrigin-Name: 74fa5757ee0a8499bcd6546dac1a3ecc6048ba9cff9e3e574e28e6e82e894a3d
* Remove many redundant checks for sqlite3.mallocFailed now that any OOM shoulddrh2022-01-24
| | | | | cause Parse.nErr to be non-zero. FossilOrigin-Name: 1f7fa46126ea33ed30e93186aff3df51068aeb4be6f79a102bfe8c4e44941d71
* When computing a vector to be used as a key for an index lookup, do notdrh2022-01-21
| | | | | | | | check for NULL values and abort until after all key values have been computed, in case one of the later key values involves some initialization that is needed by a LEFT JOIN. Fix for the problem identified by [forum:/forumpost/ab95010d410a0a55|Forum post ab95010d410a0a55]. FossilOrigin-Name: 4db5217a28ce767fa14ddfe51cf3ca25eceb72079d46a2fc00f7d6b8ae9abe0b
generated by cgit v1.2.3 (git 2.25.1) at 2025-07-19 03:22:57 +0000