QUERY PLAN
GroupAggregate (cost=29.05..29.97 rows=52 width=29)
Group Key: number
-> Sort (cost=29.05..29.18 rows=53 width=25)
Sort Key: number
-> Seq Scan on tbl_reimbursement_invoice_numbers (cost=0.00..27.53 rows=53 width=25)
Filter: ((number IS NOT NULL) AND (number <> ''::text) AND (number = ANY ('{2511700000155965284891110108010809,26127000000117965344,26327000000537935444,26377000000233750633}'::text[])))