QUERY PLAN
Sort (cost=16.50..16.51 rows=3 width=35)
Sort Key: pinyin1 NULLS FIRST, namecut1 NULLS FIRST, pinyin2 NULLS FIRST, namecut2 NULLS FIRST, pinyin3 NULLS FIRST, namecut3 NULLS FIRST, pinyin4 NULLS FIRST, namecut4 NULLS FIRST
-> Bitmap Heap Scan on tbl_users u (cost=8.46..16.47 rows=3 width=35)
Recheck Cond: (id = ANY ('{1003,5209,5203}'::integer[]))
-> Bitmap Index Scan on tbl_users_pkey (cost=0.00..8.46 rows=3 width=0)
Index Cond: (id = ANY ('{1003,5209,5203}'::integer[]))