QUERY PLAN
GroupAggregate (cost=31.99..32.01 rows=1 width=48)
Group Key: tt.id
-> Sort (cost=31.99..31.99 rows=1 width=23)
Sort Key: tt.id
-> Nested Loop Left Join (cost=0.72..31.98 rows=1 width=23)
-> Nested Loop Left Join (cost=0.58..31.77 rows=1 width=12)
-> Nested Loop (cost=0.29..23.45 rows=1 width=12)
-> 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))
-> 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)
-> Index Scan using tbl_term_taxonomy_relationships_object_id_term_id_idx on tbl_term_taxonomy_relationships ttr (cost=0.29..8.31 rows=1 width=8)
Index Cond: ((object_id = d.id) AND (term_id = 7))
-> Index Scan using tbl_term_taxonomies_pkey on tbl_term_taxonomies tt (cost=0.14..0.21 rows=1 width=15)
Index Cond: (ttr.taxonomy_id = id)