QUERY PLAN
Append (cost=0.00..3.00 rows=2 width=109)
-> Seq Scan on tbl_erp_other_payment_tickets (cost=0.00..1.67 rows=1 width=110)
Filter: ((status = 2) AND (client_id = 3281) AND ((amount - settle_amount) > '0'::numeric))
-> Seq Scan on tbl_erp_cost_tickets (cost=0.00..1.31 rows=1 width=107)
Filter: ((status = 2) AND (client_id = 3281) AND ((amount - settle_amount) > '0'::numeric))