lwen的专栏

mysql 序列 sequence

  public ActionForward execute(ActionMapping mapping, ActionForm form,   HttpServletRequest request, HttpServletResponse response) {  // TODO Auto-generated method stub  AddUserForm addUserForm = (A

<br />1. 查看字符集<br />mysql> show variables like 'character%';<br /> +--------------------------+----------------------------+<br /> | Variable_name            | Value                      |<br /> +--------------------------+----------------------------+<

在MySQL shell中使用示例： mysql> PREPARE stmt1 FROM 'SELECT SQRT(POW(?,2) + POW(?,2)) AS hypotenuse'; mysql> SET @a = 3; mysql> SET @b = 4; mysql> EXECUTE stmt1 USING @a, @b; +------------+ | hypotenuse | +------------+ | 5 | +------------+ mys