1) Added support for Default Partition. Fixes #3938

2) Ensure that record should be add/edited for root partition table with primary keys. Fixes #4104

web/pgadmin/tools/sqleditor/templates/sqleditor/sql/11_plus/primary_keys.sql

@@ -0,0 +1,8 @@
+{# ============= Fetch the primary keys for given object id ============= #}
+{% if obj_id %}
+SELECT at.attname, ty.typname
+FROM pg_attribute at LEFT JOIN pg_type ty ON (ty.oid = at.atttypid)
+WHERE attrelid={{obj_id}}::oid AND attnum = ANY (
+    (SELECT con.conkey FROM pg_class rel LEFT OUTER JOIN pg_constraint con ON con.conrelid=rel.oid
+    AND con.contype='p' WHERE rel.relkind IN ('r','s','t', 'p') AND rel.oid = {{obj_id}}::oid)::oid[])
+{% endif %}