QUERY PLAN
Sort (cost=29.45..29.53 rows=32 width=43)
Sort Key: u.pinyin1 NULLS FIRST, u.namecut1 NULLS FIRST, u.pinyin2 NULLS FIRST, u.namecut2 NULLS FIRST, u.pinyin3 NULLS FIRST, u.namecut3 NULLS FIRST, u.pinyin4 NULLS FIRST, u.namecut4 NULLS FIRST
-> Hash Left Join (cost=18.24..28.65 rows=32 width=43)
Hash Cond: (c.user_id = u.id)
-> Seq Scan on tbl_task_group_head_of_relationships c (cost=0.00..10.32 rows=32 width=12)
Filter: (task_group_id = ANY ('{41,13,42,79,188,30,48,187,201,203}'::integer[]))
-> Hash (cost=16.44..16.44 rows=144 width=35)
-> Seq Scan on tbl_users u (cost=0.00..16.44 rows=144 width=35)