Cache full MySQL version in schema cache

  * The database version is cached in all the adapters, but this didn't include
    the full MySQL version. Anything that uses the full MySQL version would need
    to query the database to get that data even if they're using the schema
    cache.
  * Now the full MySQL version will be cached in the schema cache via the
    Version object.

1 files changed, 4 insertions, 1 deletions

diff --git a/activerecord/lib/active_record/connection_adapters/abstract_adapter.rb b/activerecord/lib/active_record/connection_adapters/abstract_adapter.rb
index 200184c2f9..bf0bb84c93 100644
--- a/activerecord/lib/active_record/connection_adapters/abstract_adapter.rb
+++ b/activerecord/lib/active_record/connection_adapters/abstract_adapter.rb
@@ -170,8 +170,11 @@ module ActiveRecord
       class Version
         include Comparable
 
-        def initialize(version_string)
+        attr_reader :full_version_string
+
+        def initialize(version_string, full_version_string = nil)
           @version = version_string.split(".").map(&:to_i)
+          @full_version_string = full_version_string
         end
 
         def <=>(version_string)