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Overview
Comment:Comment enhancement to better explain the logic in the "x IS NULL" optimization.
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SHA1: 869f894798a65f8bc0e0b083866a784fa0189f68
User & Date: drh 2011-03-17 01:58:21.662
Context
2011-03-17
16:45
Update the implementation of ".testctrl" in the command-line shell to use a look-up table rather than a long sequence of if-elses. Shorten source code lines of shell.c to 80 characters or less. (check-in: 54bacb95dd user: drh tags: trunk)
01:58
Comment enhancement to better explain the logic in the "x IS NULL" optimization. (check-in: 869f894798 user: drh tags: trunk)
01:34
Enhances to the query planner such that "x IS NULL" constraints take the STAT2 statistics into account, just like "x=VALUE" constraints. (check-in: 2353176811 user: drh tags: trunk)
Changes
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Changes to src/where.c.