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8 check-ins using file src/expr.c version 610eea07

2018-09-22
15:05
Enhance WhereLoopBuilder.iPlanLimit to handle a case involving the OR optimization discovered overnight by OSSFuzz. (check-in: 7b59930a user: drh tags: trunk)
2018-09-21
23:41
Fix harmless compiler warning when compiled with SQLITE_OMIT_AUTHORIZATION. (check-in: 50f2fa19 user: mistachkin tags: trunk)
19:06
Comment typo fixed. No code changes. (check-in: 7e68cdab user: drh tags: trunk)
18:43
Put a limit counter on the query planner that restricts the number of index+constraint options that can be considered for each table in a join. This prevents certain pathological queries from taking up too much time in the query planner. (check-in: 8690b5a0 user: drh tags: trunk)
13:07
Optimization to the OP_MakeRecord opcode makes speed-check.sh run about 1.1 million cycles faster, and results in a slightly smaller library. (check-in: d10e6362 user: drh tags: trunk)
2018-09-20
20:43
Minor code simplification. (check-in: 22ae8a52 user: drh tags: trunk)
20:15
Add the "PRAGMA legacy_alter_table=ON" command to enable the pre-3.25.0 behavior of ALTER TABLE that does not modify the bodies of triggers or views or the WHERE clause of a partial index. Enable the legacy behavior by default when running the xRename method of virtual tables. (check-in: 7edd26ed user: drh tags: trunk)
19:02
Combine the Expr.pTab and Expr.pWin fields into a union named "y". Add a new EP_WinFunc property that is only true if Expr.y.pWin is a valid pointer. This reduces the size of the Expr object by 8 bytes, reduces the overall amount of code, and shaves over 1 million cycles off of the speed test. (check-in: ad130bb8 user: drh tags: trunk)