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f37069720a
- Add idx_theses_pub_year composite index on theses(is_published, year DESC) to schema.sql; replaces the need for the query planner to pick between the two separate idx_theses_published / idx_theses_year indexes and sort with a temp B-tree. Every public query filters on is_published=1 and orders/filters by year, so this covering index eliminates the sort pass for those queries. - Create storage/migrations/006_add_composite_index.sql and apply to both posterg.db and test.db. - Fix storage/migrations/005_add_banner.sql: the view recreation in that file still referenced the pre-migration-001 table/column names (thesis_keywords, keywords.keyword). Updated to use thesis_tags / tags tg to match the canonical schema.sql. The live DB was unaffected (migration 001 ran before 005), but the file was misleading and would fail if ever re-run from scratch.
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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