Fix how we are checking bind tests, can't use coerce since the test methods are defined in an if block
Fixed tests in rails/activerecord/test/cases/connection_adapters/connection_handler_test.rb by setting the RAILS_ENV to 'default_env'
Unescape quotes from default values
Added support for create_table :as, which fixes tests MigrationTest#test_create_table_with_query and MigrationTest#test_create_table_with_query_from_relation
Clear the schema cache for a table after creating it to prevent a cached negative response - fixes test ActiveRecord::Migration::ChangeSchemaTest#test_change_column_null