23 lines
823 B
MySQL
23 lines
823 B
MySQL
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-- Full-text search on messages (v0.503 - CH1)
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ALTER TABLE messages ADD COLUMN IF NOT EXISTS content_tsv tsvector;
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CREATE INDEX IF NOT EXISTS idx_messages_content_fts
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ON messages USING GIN (content_tsv);
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-- Trigger to auto-update tsvector on insert/update
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CREATE OR REPLACE FUNCTION messages_content_tsv_trigger() RETURNS trigger AS $$
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BEGIN
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NEW.content_tsv := to_tsvector('simple', COALESCE(NEW.content, ''));
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RETURN NEW;
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END;
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$$ LANGUAGE plpgsql;
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DROP TRIGGER IF EXISTS trg_messages_content_tsv ON messages;
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CREATE TRIGGER trg_messages_content_tsv
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BEFORE INSERT OR UPDATE OF content ON messages
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FOR EACH ROW EXECUTE FUNCTION messages_content_tsv_trigger();
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-- Backfill existing messages
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UPDATE messages SET content_tsv = to_tsvector('simple', COALESCE(content, ''))
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WHERE content_tsv IS NULL;
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