Artifact dede894c2990329f8bc5a70da7de44ce8c3c6bf5:
- File src/vdbe.c — part of check-in [b2671e11] at 2014-01-21 22:25:45 on branch cte-via-queue — Change the recursive common table expression algorithm to use a queue instead of a pair of tables. Runs about 25% faster on the sudoku solver query. The OP_SwapCursors opcode is no longer required. The current implementation uses just a fifo, but the plan is to change it into a queue that will support ORDER BY and LIMIT in a recursive query. (user: drh size: 204810) [more...]
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