39 lines
1.1 KiB
PL/PgSQL
39 lines
1.1 KiB
PL/PgSQL
-- Migration 023: Document Full-Text Search
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-- Adds tsvector column and GIN index for fast document searching
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-- Add search vector column
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ALTER TABLE public.documents
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ADD COLUMN IF NOT EXISTS search_vector tsvector;
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-- Populate existing documents
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UPDATE public.documents
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SET search_vector = to_tsvector('english',
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coalesce(title, '') || ' ' ||
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coalesce(description, '') || ' ' ||
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coalesce(file_name, '')
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);
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-- Create GIN index for fast full-text search
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CREATE INDEX IF NOT EXISTS idx_documents_search
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ON public.documents USING GIN (search_vector);
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-- Create trigger to keep search_vector updated
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CREATE OR REPLACE FUNCTION update_document_search_vector()
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RETURNS TRIGGER AS $$
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BEGIN
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NEW.search_vector := to_tsvector('english',
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coalesce(NEW.title, '') || ' ' ||
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coalesce(NEW.description, '') || ' ' ||
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coalesce(NEW.file_name, '')
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);
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RETURN NEW;
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END;
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$$ LANGUAGE plpgsql;
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DROP TRIGGER IF EXISTS trg_update_document_search ON public.documents;
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CREATE TRIGGER trg_update_document_search
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BEFORE INSERT OR UPDATE OF title, description, file_name
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ON public.documents
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FOR EACH ROW
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EXECUTE FUNCTION update_document_search_vector();
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