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use generated columns and gin array indexes to query tags better.

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This commit is contained in:
fiatjaf
2022-01-02 17:19:24 -03:00
parent ae3f5df0b9
commit 8091dfedbe
2 changed files with 23 additions and 18 deletions
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13
basic/postgresql.go
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@@ -13,6 +13,12 @@ func initDB(dburl string) (*sqlx.DB, error) {
}
_, err = db.Exec(`
CREATE FUNCTION tags_to_tagvalues(jsonb) RETURNS text[]
AS 'SELECT array_agg(t->>1) FROM (SELECT jsonb_array_elements($1) AS t)s;'
LANGUAGE SQL
IMMUTABLE
RETURNS NULL ON NULL INPUT;
CREATE TABLE IF NOT EXISTS event (
id text NOT NULL,
pubkey text NOT NULL,
@@ -20,14 +26,15 @@ CREATE TABLE IF NOT EXISTS event (
kind integer NOT NULL,
tags jsonb NOT NULL,
content text NOT NULL,
sig text NOT NULL
sig text NOT NULL,
tagvalues text[] GENERATED ALWAYS AS (tags_to_tagvalues(tags)) STORED
);
CREATE UNIQUE INDEX IF NOT EXISTS ididx ON event (id);
CREATE UNIQUE INDEX IF NOT EXISTS pubkeytimeidx ON event (pubkey, created_at);
CREATE INDEX IF NOT EXISTS arbitrarytagvalues ON event USING gin (tagvalues);
`)
log.Print(err)
return db, nil
}
const tagConditions = `jsonb_path_match(tags, '$[*][1] == $value', jsonb_build_object('value', ?::text))`