DO
$$
DECLARE
    tbl RECORD;
BEGIN
    -- Loop through each table in the specified schemes
    FOR tbl IN
        SELECT tablename,schemaname
        FROM pg_catalog.pg_tables
        WHERE schemaname IN ( 'api', 'help', 'hotel', 'log', 'public', 'samosad', 'whatsapp')  -- Добавьте ваши схемы в список
    LOOP
        -- Alter the owner of each table
        EXECUTE 'ALTER TABLE ' || quote_ident(tbl.schemaname) || '.' ||  quote_ident(tbl.tablename) || ' OWNER TO diman';
        -- Replace all your schemes and 'diman' with the new owner's name
    END LOOP;
END;
$$;