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9 lines
466 B
SQL
9 lines
466 B
SQL
-- Migration 006: Add composite covering index (is_published, year DESC) on theses
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--
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-- Every public-facing query filters on is_published = 1 AND orders/filters by year.
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-- The existing separate idx_theses_published and idx_theses_year force the query
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-- planner to pick one index and sort the other via a temp B-tree.
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-- This single covering index eliminates the extra sort pass.
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CREATE INDEX IF NOT EXISTS idx_theses_pub_year ON theses(is_published, year DESC);
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