diff --git a/activerecord/lib/active_record/connection_adapters/abstract_mysql_adapter.rb b/activerecord/lib/active_record/connection_adapters/abstract_mysql_adapter.rb
index 718a6c5b91..76effdddb4 100644
--- a/activerecord/lib/active_record/connection_adapters/abstract_mysql_adapter.rb
+++ b/activerecord/lib/active_record/connection_adapters/abstract_mysql_adapter.rb
@@ -515,7 +515,7 @@ module ActiveRecord
 
         schema, name = extract_schema_qualified_name(table_name)
 
-        fk_info = select_all <<-SQL.strip_heredoc
+        fk_info = select_all(<<-SQL.strip_heredoc, 'SCHEMA')
           SELECT fk.referenced_table_name as 'to_table'
                 ,fk.referenced_column_name as 'primary_key'
                 ,fk.column_name as 'column'
diff --git a/activerecord/lib/active_record/connection_adapters/postgresql/schema_statements.rb b/activerecord/lib/active_record/connection_adapters/postgresql/schema_statements.rb
index 6318b1c65a..94f4f81e6c 100644
--- a/activerecord/lib/active_record/connection_adapters/postgresql/schema_statements.rb
+++ b/activerecord/lib/active_record/connection_adapters/postgresql/schema_statements.rb
@@ -579,7 +579,7 @@ module ActiveRecord
         end
 
         def foreign_keys(table_name)
-          fk_info = select_all <<-SQL.strip_heredoc
+          fk_info = select_all(<<-SQL.strip_heredoc, 'SCHEMA')
             SELECT t2.oid::regclass::text AS to_table, a1.attname AS column, a2.attname AS primary_key, c.conname AS name, c.confupdtype AS on_update, c.confdeltype AS on_delete
             FROM pg_constraint c
             JOIN pg_class t1 ON c.conrelid = t1.oid