arsam
5537bc2b40
Import the existing local project snapshot. This commit organizes existing files; it does not represent newly developed functionality.
32 lines
1.2 KiB
PL/PgSQL
32 lines
1.2 KiB
PL/PgSQL
-- Persian normalization fn (idempotent via OR REPLACE).
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CREATE OR REPLACE FUNCTION teknav_norm_fa(t text)
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RETURNS text LANGUAGE sql IMMUTABLE PARALLEL SAFE AS $$
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SELECT regexp_replace(
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translate(
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coalesce(t, ''),
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E'يكأإآٱـًٌٍَُِّْ،؛؟',
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E'یکاااا ,;?'
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),
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'\s+', ' ', 'g'
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);
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$$;
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-- Trigram support for autocomplete / fuzzy matching.
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CREATE EXTENSION IF NOT EXISTS pg_trgm;
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-- Weighted tsvector computed column (A=title, B=subtitle+summary, C=content).
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ALTER TABLE "Article"
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ADD COLUMN IF NOT EXISTS "search_tsv" tsvector
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GENERATED ALWAYS AS (
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setweight(to_tsvector('simple', teknav_norm_fa("title")), 'A') ||
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setweight(to_tsvector('simple', teknav_norm_fa(coalesce("subtitle", ''))), 'B') ||
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setweight(to_tsvector('simple', teknav_norm_fa("summary")), 'B') ||
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setweight(to_tsvector('simple', teknav_norm_fa("content")), 'C')
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) STORED;
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-- GIN index for full-text search.
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CREATE INDEX IF NOT EXISTS "Article_search_tsv_idx" ON "Article" USING GIN ("search_tsv");
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-- Trigram index for title autocomplete.
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CREATE INDEX IF NOT EXISTS "Article_title_trgm_idx" ON "Article" USING GIN ("title" gin_trgm_ops);
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