QUERY PLAN
Limit (cost=116.71..116.76 rows=20 width=53)
-> Sort (cost=116.71..116.76 rows=20 width=53)
Sort Key: created_at DESC
-> Seq Scan on tbl_clients (cost=0.00..116.28 rows=20 width=53)
Filter: ((NOT deleted) AND (((name)::text ~~* '%O%'::text) OR (pinyin_shortcut ~~* '%O%'::text)))