Artifact a9a270991e5e526151d077959b868481b28db8707bc6d29b76badd536c48225a:
- File src/where.c — part of check-in [92f0fe155d] at 2018-05-30 00:54:23 on branch multikey-opt-idea — Demonstration code on a possible technique for optimizing the use of IN operator on columns to the right of multicolumn indexes. If the OP_Noop generated where were really a new opcode that checked to see if there existed any entries in the index with a matching prefix, it might prevent unnecessary iterations of the IN operator. (user: drh size: 195194)
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