supports_index_sort_order?() Instance Public methods Does this adapter support index sort order?

supports_migrations?() Instance Public methods Does this adapter support migrations? Backend specific, as the abstract adapter always returns false.

supports_partial_index?() Instance Public methods Does this adapter support partial indices?

supports_primary_key?() Instance Public methods Can this adapter determine the primary key for tables not attached to an Active Record class, such as join tables? Backend specific, as the abstract adapter always returns false.

supports_savepoints?() Instance Public methods Does this adapter support savepoints? PostgreSQL and MySQL do, SQLite < 3.6.8 does not.

supports_transaction_isolation?() Instance Public methods Does this adapter support setting the isolation level for a transaction?

unprepared_statement() Instance Public methods

unprepared_visitor() Instance Public methods

valid_type?(type) Instance Public methods

verify!(*ignored) Instance Public methods Checks whether the connection to the database is still active (i.e. not stale). This is done under the hood by calling active?. If the connection is no longer active, then this method will reconnect to the database.