QUERY PLAN
Sort (cost=431816.28..431816.28 rows=1 width=322)
Sort Key: fns.nspname, fc.relname, a.attnum
-> Nested Loop Left Join (cost=94.27..431816.27 rows=1 width=322)
-> Nested Loop Left Join (cost=93.85..431815.82 rows=1 width=289)
-> Nested Loop Left Join (cost=93.72..431815.67 rows=1 width=229)
-> Nested Loop (cost=93.43..431815.36 rows=1 width=161)
Join Filter: (c.oid = a.attrelid)
-> Nested Loop (cost=93.01..431813.53 rows=4 width=126)
Join Filter: (c.relnamespace = ns.oid)
-> Seq Scan on pg_namespace ns (cost=0.00..1.07 rows=1 width=4)
Filter: (nspname = 'a57be577deb434'::name)
-> Hash Join (cost=93.01..431811.35 rows=89 width=130)
Hash Cond: (ct.conrelid = c.oid)
-> ProjectSet (cost=0.00..123592.54 rows=24406000 width=123)
-> Seq Scan on pg_constraint ct (cost=0.00..1379.50 rows=24406 width=118)
Filter: (contype = 'f'::"char")
-> Hash (cost=92.71..92.71 rows=24 width=8)
-> Bitmap Heap Scan on pg_class c (cost=4.60..92.71 rows=24 width=8)
Recheck Cond: (relname = 'tbl_sales_order_items'::name)
-> Bitmap Index Scan on pg_class_relname_nsp_index (cost=0.00..4.59 rows=24 width=0)
Index Cond: (relname = 'tbl_sales_order_items'::name)
-> Index Scan using pg_attribute_relid_attnum_index on pg_attribute a (cost=0.42..0.44 rows=1 width=70)
Index Cond: ((attrelid = ct.conrelid) AND (attnum = (ct.conkey)[(generate_subscripts(ct.conkey, 1))]))
-> Index Scan using pg_class_oid_index on pg_class fc (cost=0.29..0.31 rows=1 width=72)
Index Cond: (oid = ct.confrelid)
-> Index Scan using pg_namespace_oid_index on pg_namespace fns (cost=0.13..0.15 rows=1 width=68)
Index Cond: (fc.relnamespace = oid)
-> Index Scan using pg_attribute_relid_attnum_index on pg_attribute fa (cost=0.42..0.44 rows=1 width=70)
Index Cond: ((attrelid = ct.confrelid) AND (attnum = (ct.confkey)[(generate_subscripts(ct.conkey, 1))]))