QUERY PLAN
Sort (cost=24.98..24.99 rows=3 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 Right Join (cost=7.59..24.96 rows=3 width=43)
Hash Cond: (u.id = c.user_id)
-> Seq Scan on tbl_users u (cost=0.00..16.44 rows=144 width=35)
-> Hash (cost=7.55..7.55 rows=3 width=12)
-> Seq Scan on tbl_task_group_head_of_relationships c (cost=0.00..7.55 rows=3 width=12)
Filter: (task_group_id = ANY ('{3,12,14,4}'::integer[]))