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15 check-ins using file src/build.c version c67a915c

2014-08-05
00:53
Improved VdbeCoverage() macros. A few minor simplifications to generated VDBE code. (Closed-Leaf check-in: 01f60027 user: drh tags: IN-operator-improvements)
2014-08-04
21:26
Part of the change in the previous check-in was incorrect and can result in an incorrect UPDATE for WITHOUT ROWID tables. This check-in fixes the problem. (check-in: ee5f6eae user: drh tags: IN-operator-improvements)
18:50
Further enhancements to IN-operator processing. (check-in: 7fdf26da user: drh tags: IN-operator-improvements)
16:39
Refinements to the enhanced IN-operator logic. (check-in: 92ba2821 user: drh tags: IN-operator-improvements)
15:12
Changed my mind: This opcode name changes mere creates unnecessary diff marks between older and newer versions without significantly improving readability. Was: Rename the IsNull opcode to IfNull and rename the NotNull opcode to IfNotNull. (Closed-Leaf check-in: 2f724cba user: drh tags: deadend)
2014-08-02
21:03
Enhancements to the code generator for the IN operator that result in much faster queries in some cases, for example when the RHS of the IN operator changes for each row of a large table scan. (check-in: 436e8842 user: drh tags: IN-operator-improvements)
20:44
Remove (newly) incorrect preprocessor check to fix build on WinRT. (check-in: ba782654 user: mistachkin tags: trunk)
2014-08-01
21:12
A better comment on the generated code for the NULL-in-RHS-of-IN detection logic. (check-in: 9bc1c730 user: drh tags: trunk)
21:00
Improved detection and handling of NULL values on the RHS of a IN operator. (check-in: 468e7300 user: drh tags: trunk)
18:00
Remove an unnecessary OP_Null in the IN-operator logic. Attempt to clarify comments explaining the IN-operator code, though it is not clear that the comments are correct even yet - more work to be done. (check-in: c11e55fa user: drh tags: trunk)
15:51
Clean up the IN operator code generation logic to make it easier to reason about. In the process, improve code generation to omit some unused OP_Null operations. (check-in: 7c6fbcfe user: drh tags: trunk)
15:34
The idea of coding IN operator with a short list on the RHS as an OR expression turns out to be helpful. If the list is of length 1 or 2, the OR expression is very slightly faster, but the ephemeral table approach is clearly better for all list lengths greater than 2. Better to keep the code simple. (Closed-Leaf check-in: e13175d3 user: drh tags: IN-operator-improvements)
14:46
Begin making changes to the IN operator in an attempt to make it run faster and to make the code easier to understand. (check-in: ee0fd6aa user: drh tags: IN-operator-improvements)
01:40
Enhance the PRAGMA integrity_check command to detect UNIQUE and NOT NULL constraint violations. (check-in: 9abcf269 user: drh tags: trunk)
2014-07-31
22:59
Refactoring: Change "pIndex->onError!=OE_None" to use a macro: "IsUniqueIndex(pIndex)". Easier to understand that way. (check-in: e75b26ee user: drh tags: trunk)