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-rw-r--r--activerecord/lib/active_record/relation/calculations.rb9
1 files changed, 4 insertions, 5 deletions
diff --git a/activerecord/lib/active_record/relation/calculations.rb b/activerecord/lib/active_record/relation/calculations.rb
index a8a52867ce..0fcae92d51 100644
--- a/activerecord/lib/active_record/relation/calculations.rb
+++ b/activerecord/lib/active_record/relation/calculations.rb
@@ -146,7 +146,7 @@ module ActiveRecord
if options.except(:distinct).present?
apply_finder_options(options.except(:distinct)).calculate(operation, column_name, :distinct => options[:distinct])
else
- if eager_loading? || includes_values.present?
+ if eager_loading? || (includes_values.present? && references_eager_loaded_tables?)
construct_relation_for_association_calculations.calculate(operation, column_name, options)
else
perform_calculation(operation, column_name, options)
@@ -161,21 +161,20 @@ module ActiveRecord
def perform_calculation(operation, column_name, options = {})
operation = operation.to_s.downcase
- distinct = nil
+ distinct = options[:distinct]
if operation == "count"
column_name ||= (select_for_count || :all)
unless arel.ast.grep(Arel::Nodes::OuterJoin).empty?
distinct = true
- column_name = primary_key if column_name == :all
end
+ column_name = primary_key if column_name == :all && distinct
+
distinct = nil if column_name =~ /\s*DISTINCT\s+/i
end
- distinct = options[:distinct] || distinct
-
if @group_values.any?
execute_grouped_calculation(operation, column_name, distinct)
else