text: CREATE TABLE IF NOT EXISTS `cdmx_obras`.`usuarios` (
    `clv_usuario` INT NOT NULL AUTO_INCREMENT,
    `nombre` VARCHAR(200) NOT NULL,
    `knight_id` INT NOT NULL,
    PRIMARY KEY (`clv_usuario`),
    UNIQUE INDEX `clv_usuario_UNIQUE` (`clv_usuario` ASC),
    INDEX `fk_usuarios_knights_idx` (`knight_id` ASC),
    CONSTRAINT `fk_usuarios_knights`
      FOREIGN KEY (`knight_id`)
      REFERENCES `cdmx_obras`.`knights` (`knight_id`)
      ON DELETE CASCADE
      ON UPDATE NO ACTION)
  ENGINE = InnoDB