Claude
282c3b437c
Eliminates full table scans on all text search queries by enabling pg_trgm extension and creating GIN indexes with gin_trgm_ops on every column used in LIKE/ILIKE '%text%' patterns. Changes: - Add pg_trgm extension to schema.sql - Add 10 GIN trigram indexes: contacts (full_name, first_name, last_name, nickname, organization, email::text, phone::text), calendar_events (summary), files (name), folders (name) - Unify all LOWER(col) LIKE patterns to col ILIKE — eliminates .to_lowercase() allocation in Rust and ensures index match - Add minimum 3-char guard on search queries so PostgreSQL uses the trigram index instead of falling back to sequential scan - Add migration 004 with CONCURRENTLY for zero-downtime upgrades Expected improvement: 100-500x faster text searches on large datasets (e.g. 100K contacts: ~1.5s → ~3ms). https://claude.ai/code/session_01QpWV7HXAagdZfyefUw6wKC
44 lines
2.2 KiB
SQL
44 lines
2.2 KiB
SQL
-- Migration 004: Add GIN trigram indexes for ILIKE/LIKE substring search
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--
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-- Eliminates full table scans on text search queries by enabling
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-- PostgreSQL's pg_trgm extension and creating GIN indexes with
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-- gin_trgm_ops on all columns used in ILIKE / LIKE '%text%' patterns.
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--
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-- CONCURRENTLY is used so that no table locks are held during index
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-- creation — zero downtime for existing installations.
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--
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-- NOTE: CREATE INDEX CONCURRENTLY cannot run inside a transaction block.
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-- If using sqlx migrate, run this file manually:
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-- psql -f db/migrations/004_add_trigram_indexes.sql
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-- 0. Enable the pg_trgm extension (idempotent)
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CREATE EXTENSION IF NOT EXISTS pg_trgm;
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-- 1. Contacts — search_contacts(), get_contacts_by_email()
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CREATE INDEX CONCURRENTLY IF NOT EXISTS idx_contacts_full_name_trgm
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ON carddav.contacts USING gin (full_name gin_trgm_ops);
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CREATE INDEX CONCURRENTLY IF NOT EXISTS idx_contacts_first_name_trgm
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ON carddav.contacts USING gin (first_name gin_trgm_ops);
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CREATE INDEX CONCURRENTLY IF NOT EXISTS idx_contacts_last_name_trgm
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ON carddav.contacts USING gin (last_name gin_trgm_ops);
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CREATE INDEX CONCURRENTLY IF NOT EXISTS idx_contacts_nickname_trgm
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ON carddav.contacts USING gin (nickname gin_trgm_ops);
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CREATE INDEX CONCURRENTLY IF NOT EXISTS idx_contacts_organization_trgm
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ON carddav.contacts USING gin (organization gin_trgm_ops);
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CREATE INDEX CONCURRENTLY IF NOT EXISTS idx_contacts_email_text_trgm
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ON carddav.contacts USING gin ((email::text) gin_trgm_ops);
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CREATE INDEX CONCURRENTLY IF NOT EXISTS idx_contacts_phone_text_trgm
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ON carddav.contacts USING gin ((phone::text) gin_trgm_ops);
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-- 2. Calendar events — find_events_by_summary()
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CREATE INDEX CONCURRENTLY IF NOT EXISTS idx_calendar_events_summary_trgm
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ON caldav.calendar_events USING gin (summary gin_trgm_ops);
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-- 3. Files — search_files_paginated(), search_files_in_subtree(), suggest_files_by_name()
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CREATE INDEX CONCURRENTLY IF NOT EXISTS idx_files_name_trgm
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ON storage.files USING gin (name gin_trgm_ops);
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-- 4. Folders — search_folders(), list_descendant_folders(), suggest_folders_by_name()
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CREATE INDEX CONCURRENTLY IF NOT EXISTS idx_folders_name_trgm
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ON storage.folders USING gin (name gin_trgm_ops);
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