QUERY PLAN
Sort (cost=20.63..20.80 rows=68 width=39)
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=9.17..18.56 rows=68 width=39)
Hash Cond: (c.user_id = u.id)
-> Seq Scan on tbl_task_group_head_of_relationships c (cost=0.00..9.21 rows=68 width=8)
Filter: (task_group_id = ANY ('{190,189,188,187,178,141,140,139,106,105,99,98,97,96,94,93,90,89,88,87}'::integer[]))
-> Hash (cost=7.41..7.41 rows=141 width=35)
-> Seq Scan on tbl_users u (cost=0.00..7.41 rows=141 width=35)