QUERY PLAN
GroupAggregate (cost=24.69..24.71 rows=1 width=48)
Group Key: dg.id
-> Sort (cost=24.69..24.70 rows=1 width=286)
Sort Key: dg.id
-> Nested Loop (cost=0.29..24.68 rows=1 width=286)
-> Nested Loop Left Join (cost=0.00..16.36 rows=1 width=290)
Join Filter: (d.document_type_id = dg.id)
-> Seq Scan on tbl_documents d (cost=0.00..15.12 rows=1 width=16)
Filter: ((document_type_id IS NULL) AND (document_type_id = '-1'::integer) AND (created_by = 1000) AND (department_id = 1))
-> Seq Scan on tbl_document_types dg (cost=0.00..1.23 rows=1 width=278)
Filter: (id = '-1'::integer)
-> Index Scan using tbl_term_taxonomy_relationships_object_id_term_id_idx on tbl_term_taxonomy_relationships dt (cost=0.29..8.31 rows=1 width=4)
Index Cond: ((object_id = d.id) AND (term_id = 7))
Filter: (taxonomy_id = 116)