addSql('ALTER TABLE chill_main_address DROP CONSTRAINT chill_custom_validfrom_before_validto'); } public function getDescription(): string { return 'in addresses, validfrom must be lower than validto'; } public function up(Schema $schema): void { $this->addSql('ALTER TABLE chill_main_address ADD CONSTRAINT chill_custom_validfrom_before_validto CHECK (validfrom <= COALESCE(validto, \'infinity\'::date))'); } }