to_sql(arel, binds = []) Instance Public methods Converts an arel AST to SQL

transaction(options = {}) Instance Public methods Runs the given block in a database transaction, and returns the result of the block. Nested transactions support Most databases don't support true nested transactions. At the time of writing, the only database that supports true nested transactions that we're aware of, is MS-SQL. In order to get around this problem, transaction will emulate the effect of nested transactions, by using savepoints: dev.mysql.com/doc/refman/5.0/en/savep

transaction_isolation_levels() Instance Public methods

transaction_open?() Instance Public methods

update(arel, name = nil, binds = []) Instance Public methods Executes the update statement and returns the number of rows affected.

binds_from_relation(relation, binds) Instance Protected methods

delete_sql(sql, name = nil) Instance Protected methods Executes the delete statement and returns the number of rows affected.

insert_sql(sql, name = nil, pk = nil, id_value = nil, sequence_name = nil) Instance Protected methods Returns the last auto-generated ID from the affected table.

last_inserted_id(result) Instance Protected methods

select(sql, name = nil, binds = []) Instance Protected methods Returns an ActiveRecord::Result instance.