QUERY PLAN
GroupAggregate (cost=721.75..909.58 rows=106 width=44)
Group Key: c.client_id
-> Hash Right Join (cost=721.75..907.34 rows=122 width=20)
Hash Cond: (tbl_implement_records.case_id = c.id)
-> HashAggregate (cost=410.51..511.28 rows=6718 width=20)
Group Key: tbl_implement_records.case_id
-> Seq Scan on tbl_implement_records (cost=0.00..340.28 rows=7023 width=24)
Filter: (NOT is_draft)
-> Hash (cost=309.71..309.71 rows=122 width=8)
-> Seq Scan on tbl_cases c (cost=0.00..309.71 rows=122 width=8)
Filter: ((case_type = 2) AND (client_id = 982))