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17 ancestors of trunk back to release
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2025-07-02
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| 11:47 | Improve the bytecode for joins such that it exits earlier if it determines that no output is possible. (Leaf check-in: 2d2b61cba4 user: drh tags: trunk) | |
| 02:03 | Ensure that Expr.op2 values for TK_AGG_FUNCTION nodes are adjusted when query flattening. (check-in: d27d34fb74 user: drh tags: trunk) | |
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2025-07-01
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| 23:17 | Improved comments on bytecode used to implement aggregate queries, to aid in debugging. (check-in: a1a8b85cdb user: drh tags: trunk) | |
| 20:32 | Improved byte-code comments for the short-circuit optimization of [0083d5169a46104a], to aid in debugging. (check-in: 113f9d10e3 user: drh tags: trunk) | |
| 17:36 | Cache and reuse virtual table cursors in the bytecode engine. (check-in: 2d187d4232 user: drh tags: trunk) | |
| 16:21 | Avoid an assert() failure in fts5 that may occur when processing corrupt records. (check-in: 8afd6ca857 user: dan tags: trunk) | |
| 15:13 | Merge trunk fixes into the empty-table-optimizations branch. (Closed-Leaf check-in: 63306e447e user: drh tags: empty-table-optimizations) | |
| 12:43 | When attempting to optimize "expr AND false" to "false" and "expr IN ()" to "false", take care not to delete aggregate functions in the "expr" as doing so can change the meaning of the query. See forum thread f4878de3e7. (check-in: 77397bd67d user: drh tags: trunk) | |
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2025-06-30
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| 21:07 | More aggressive optimization of addrHalt for RIGHT JOIN. (check-in: 5e51d1c0df user: drh tags: empty-table-optimizations) | |
| 20:19 | Compute WhereLevel.addrBrk and .addrHalt early so that those labels can be used to abort loops early. Use this to improve performance on two more of the cases described by forum post 52651713ac. (check-in: 6fc0b9ac23 user: drh tags: empty-table-optimizations) | |
| 16:41 | Strive to skip the evaluation of scalar subqueries that are part of a larger expression if the result from the scalar subquery does not change the result of the overall expression. (check-in: 0083d5169a user: drh tags: trunk) | |
| 12:14 | For all binary operators, try to avoid computing subquery operands if the other operand is NULL. (Closed-Leaf check-in: d86eb16283 user: drh tags: optimize-null-values) | |
| 11:04 | Slightly smaller and faster version of the previous check-in. (check-in: f6e6fd02f4 user: drh tags: optimize-null-values) | |
| 11:00 | Minor API doc typo fixes from brickviking. (check-in: b48d951916 user: stephan tags: trunk) | |
| 10:30 | Factor out the code that tries to avoid evaluating subquery operands if the other operand is NULL into a subroutine, so that it can be more easily reused by other parts of the code generator. (check-in: 3c6c71bcea user: drh tags: optimize-null-values) | |
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2025-06-29
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| 07:32 | Minor API doc typo fixes from brickviking. (check-in: c7cf9dcb69 user: stephan tags: trunk) | |
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2025-06-28
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| 17:59 | Improve the bytecode generated for comparisons so that if one operand is a subquery and the other operand evaluates to NULL, the subquery operand is not even computed. This fixes 5 of the 11 slow queries described in forum post 52651713ac. (check-in: f147bc0477 user: drh tags: optimize-null-values) | |
| 14:00 | Version 3.50.2 (check-in: 2af157d77f user: drh tags: release, branch-3.50, version-3.50.2) | |