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SQLite training in Houston TX on 2019-11-05 (details)
Part of the 2019 Tcl Conference

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Overview
Comment:Use OP_SorterOpen instead of OP_OpenEphemeral to implement GROUP BY.
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User & Date: drh 2011-09-01 16:01:27
Context
2011-09-02
10:31
Instead of a temporary b-tree, use a linked-list and merge-sort to sort records in main memory in vdbesort.c. check-in: 7769fb98 user: dan tags: merge-sort
2011-09-01
16:01
Use OP_SorterOpen instead of OP_OpenEphemeral to implement GROUP BY. check-in: ebf819aa user: drh tags: merge-sort
15:32
Experimental code-generator changes to utilize new opcodes for sorting. check-in: bab2e560 user: drh tags: merge-sort
Changes
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Changes to src/select.c.

Changes to test/distinct.test.