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    $dir=dirname(__FILE__);                       //»ñÈ¡µ±Ç°½Å±¾µÄ¾ø¶Ô·¾¶
    $dir=str_replace("\\","/",$dir)."/";
    $filename='uploadFile.xls'; //¿ÉÒÔ¶¨ÒåÒ»¸öÉÏ´«ºóµÄÎļþÃû³Æ
    $result=move_uploaded_file($_FILES['upload']['tmp_name'],$dir.$filename);//¼ÙÈçÉÏ´«µ½µ±Ç°Ä¿Â¼ÏÂ
    if($result)  //Èç¹ûÉÏ´«Îļþ³É¹¦£¬¾ÍÖ´Ðе¼Èëexcel²Ù×÷
    {
     require_once 'phpExcelReader/Excel/reader.php';
     $data = new Spreadsheet_Excel_Reader();
     $data->setOutputEncoding('utf-8');//ÉèÖÃÔÚÒ³ÃæÖÐÊä³öµÄ±àÂ뷽ʽ,¶ø²»ÊÇutf8
      //¸Ã·½·¨»á×Ô¶¯ÅжÏÉÏ´«µÄÎļþ¸ñʽ£¬²»·ûºÏÒªÇó»áÏÔʾ´íÎóÌáʾÐÅÏ¢(´íÎóÌáʾÐÅÏ¢Ôڸ÷½·¨ÄÚ²¿)¡£
     $data->read("$filename");  //¶ÁÈ¡ÉÏ´«µ½µ±Ç°Ä¿Â¼ÏÂÃû½Ð$filenameµÄÎļþ
     error_reporting(E_ALL ^ E_NOTICE);
     //Èç¹ûexcel±í´ø±êÌ⣬Ôò´Ó$i=2¿ªÊ¼£¬È¥µôexcel±íÖеıêÌⲿ·Ö(Òª½«$i<=¸ÄΪ$i<·ñÔò»á²åÈëÒ»Ìõ¶àÓàµÄ¿ÕÊý¾Ý)
     for ($i = 2; $i < $data->sheets[0]['numRows']; $i++)
     {
      $sql = "INSERT INTO user (stuid,class,name,sex,classNum,tel,addr,remark)


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D:\program\study\mysql\bin>mysqldump -u root -p oa > D:\oa.sql
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LOCK TABLES tbl_name [AS alias] {READ [LOCAL] | [LOW_PRIORITY] WRITE}
[, tbl_name [AS alias] {READ [LOCAL] | [LOW_PRIORITY] WRITE} ...]
...
UNLOCK TABLES
LOCK TABLES Ϊµ±Ç°Ïß³ÌËø¶¨±í¡£UNLOCK TABLES Êͷŵ±Ç°Ïß³ÌÓµÓеÄËùÓÐËø¶¨¡£µ±Ï̷߳¢³öÁíÒ»¸ö LOCK TABLES£¬»òµ±Óë·þ ......

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mysql> SELECT 1+"1";
        -> 2
mysql> SELECT CONCAT(2,' test');
        -> '2 test'
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