Fix GROUP BY with calculate longer name field to respect `table_alias_length`

Follow up of c9e4c848eeeb8999b778fa1ae52185ca5537fffe.

1 files changed, 8 insertions, 4 deletions

diff --git a/activerecord/lib/active_record/connection_adapters/abstract/database_limits.rb b/activerecord/lib/active_record/connection_adapters/abstract/database_limits.rb
index 1305216be2..75e959045e 100644
--- a/activerecord/lib/active_record/connection_adapters/abstract/database_limits.rb
+++ b/activerecord/lib/active_record/connection_adapters/abstract/database_limits.rb
@@ -5,20 +5,24 @@ require "active_support/deprecation"
 module ActiveRecord
   module ConnectionAdapters # :nodoc:
     module DatabaseLimits
+      def max_identifier_length # :nodoc:
+        64
+      end
+
       # Returns the maximum length of a table alias.
       def table_alias_length
-        255
+        max_identifier_length
       end
 
       # Returns the maximum length of a column name.
       def column_name_length
-        64
+        max_identifier_length
       end
       deprecate :column_name_length
 
       # Returns the maximum length of a table name.
       def table_name_length
-        64
+        max_identifier_length
       end
       deprecate :table_name_length
 
@@ -33,7 +37,7 @@ module ActiveRecord
 
       # Returns the maximum length of an index name.
       def index_name_length
-        64
+        max_identifier_length
       end
 
       # Returns the maximum number of columns per table.