QUERY PLAN
Bitmap Heap Scan on tbl_contact_attend_pre_sales (cost=8.58..14.15 rows=2 width=12)
Recheck Cond: (pre_sales_id = ANY ('{1838,1837}'::integer[]))
-> Bitmap Index Scan on tbl_contact_attend_pre_sales_pkey (cost=0.00..8.58 rows=2 width=0)
Index Cond: (pre_sales_id = ANY ('{1838,1837}'::integer[]))