diff options
Diffstat (limited to 'activerecord/lib')
| -rw-r--r-- | activerecord/lib/active_record/relation/merger.rb | 9 |
1 files changed, 6 insertions, 3 deletions
diff --git a/activerecord/lib/active_record/relation/merger.rb b/activerecord/lib/active_record/relation/merger.rb index 07b16a0740..4de7465128 100644 --- a/activerecord/lib/active_record/relation/merger.rb +++ b/activerecord/lib/active_record/relation/merger.rb @@ -171,9 +171,7 @@ module ActiveRecord end def merge_clauses - if relation.from_clause.empty? && !other.from_clause.empty? - relation.from_clause = other.from_clause - end + relation.from_clause = other.from_clause if replace_from_clause? where_clause = relation.where_clause.merge(other.where_clause) relation.where_clause = where_clause unless where_clause.empty? @@ -181,6 +179,11 @@ module ActiveRecord having_clause = relation.having_clause.merge(other.having_clause) relation.having_clause = having_clause unless having_clause.empty? end + + def replace_from_clause? + relation.from_clause.empty? && !other.from_clause.empty? && + relation.klass.base_class == other.klass.base_class + end end end end |