1 files changed, 27 insertions, 0 deletions
diff --git a/activerecord/lib/active_record/connection_adapters/mysql/column.rb b/activerecord/lib/active_record/connection_adapters/mysql/column.rb
new file mode 100644
index 0000000000..fa1541019d
--- /dev/null
+++ b/activerecord/lib/active_record/connection_adapters/mysql/column.rb
@@ -0,0 +1,27 @@
+# frozen_string_literal: true
+
+module ActiveRecord
+  module ConnectionAdapters
+    module MySQL
+      class Column < ConnectionAdapters::Column # :nodoc:
+        delegate :extra, to: :sql_type_metadata, allow_nil: true
+
+        def unsigned?
+          /\bunsigned(?: zerofill)?\z/.match?(sql_type)
+        end
+
+        def case_sensitive?
+          collation && !/_ci\z/.match?(collation)
+        end
+
+        def auto_increment?
+          extra == "auto_increment"
+        end
+
+        def virtual?
+          /\b(?:VIRTUAL|STORED|PERSISTENT)\b/.match?(extra)
+        end
+      end
+    end
+  end
+end