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-rw-r--r--activerecord/lib/active_record/relation/calculations.rb8
1 files changed, 4 insertions, 4 deletions
diff --git a/activerecord/lib/active_record/relation/calculations.rb b/activerecord/lib/active_record/relation/calculations.rb
index 71d33fcd4e..d4765a6782 100644
--- a/activerecord/lib/active_record/relation/calculations.rb
+++ b/activerecord/lib/active_record/relation/calculations.rb
@@ -179,13 +179,13 @@ module ActiveRecord
def pluck(column_name)
if column_name.is_a?(Symbol) && column_names.include?(column_name.to_s)
column_name = "#{connection.quote_table_name(table_name)}.#{connection.quote_column_name(column_name)}"
- else
- column_name = column_name.to_s
end
- column_name = column_name.to_s
+ result = klass.connection.exec_query(select(column_name).to_sql)
+ last_column = result.columns.last
+
klass.connection.select_all(select(column_name).arel).map! do |attributes|
- klass.type_cast_attribute(attributes.keys.first, klass.initialize_attributes(attributes))
+ klass.type_cast_attribute(last_column, klass.initialize_attributes(attributes))
end
end