Method index_ddl_if_exists

test/requirements.py:121–125

target platform supports IF NOT EXISTS / IF EXISTS for indexes.

(self)

    @property
    def index_ddl_if_exists(self):
        """target platform supports IF NOT EXISTS / IF EXISTS for indexes."""

        # mariadb but not mysql, tested up to mysql 8
        return only_on(["postgresql", "mariadb", "sqlite"])

    @property
    def on_update_cascade(self):