Home Backend Development PHP Tutorial ThinkPHP2.0读取MSSQL提示Incorrect syntax near the keyword '_PHP

ThinkPHP2.0读取MSSQL提示Incorrect syntax near the keyword '_PHP

Jun 01, 2016 am 11:51 AM
Solution

ThinkPHP

问题代码如下:

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<&#63;php

class IndexAction extends Action{

  public function index(){

    /*

    $Model = new Model();

    $test = $Model->query('select top 10 * from f_city');

    dump($test);

    */

    $CityModel = M('city');

    $CityModel->find();

    dump($CityModel);

  }

}

&#63;>

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出现的情况是使用 query 可以正确读取到数据,而使用M方法,则无法读取,会报出 Incorrect syntax near the keyword 'AS'. 错误
原因是DbMssql.class.php驱动的查询语句有问题。

由于TP2.0 的 MSSQL 驱动是对SQL 2005有效,但对2000版本则无效,原因是2000版本里没有 ROW_NUMBER 功能,2005才有这个功能作用好像是对数据分页提供便利和效能。

希望官方能够给TP2.0加一个2000的驱动吧,目前采用的临时处理方法是修改ThinkPHP\Lib\Think\Db\Driver\DbMssql.class.php ,将行 25 的 protected $selectSql 在前面加 '//'
并且第326行 的

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public function parseLimit($limit) {

      if(emptyempty($limit)) $limit=1;

  $limit    =    explode(',',$limit);

  if(count($limit)>1)

    $limitStr    =    '(T1.ROW_NUMBER BETWEEN '.$limit[0].' + 1 AND '.$limit[0].' + '.$limit[1].')';

      else

    $limitStr = '(T1.ROW_NUMBER BETWEEN 1 AND '.$limit[0].")";

  return $limitStr;

}

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改为:

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public function parseLimit($limit) {

  return '';

}

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这样更改后,基本可以满足一般的SQL需求,但不能使用LIMIT,因为 MSSQL 2000 的LIMIT方法是以 top N
这样实现的;

如果觉得麻烦,那么就结合 Adodb 类库吧,这个对MSSQL支持相对好很多。要结合 Adodb 类库我的方法如下:

首先下载 Adodb 类库并解压到 ThinkPHP 的 Vendor 目录中,并把 adodb.inc.php 改名为 adodb.php
然后在项目的 Lib 里建立一个 CommonAction.class.php 内容为

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<&#63;php

class CommonAction extends Action {

  public $dbsql;

  function _initialize() {

    Vendor('adodb5.adodb');

    $adodb = ADONewConnection(C('DB_TYPE'));

    $adodb->Connect(C('DB_HOST'), C('DB_USER'), C('DB_PWD'), C('DB_NAME'));

    $adodb->SetFetchMode(ADODB_FETCH_ASSOC);

    $this->dbsql = $adodb;

  }

}

&#63;>

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在项目的其他文件中都要引用到这个 CommonAction.class.php 文才能使用 ADODB,例如:

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<&#63;php

class IndexAction extends CommonAction {

  public function index() {

    $query = $this->dbsql->Execute('select * from xxx');

    while($rows = $query->FetchRow()) {

        echo $rows['fields'];

     }

  }

}

&#63;>

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这样既能使用 Thinkphp 的模块进行简单的数据查询也能使用 Adodb 进行分页数据的查询,实在是没办法中的办法了,这个是个笨办法哦,还是希望 ThinkPHP 能够出一个 MSSQL 2000 版本能用的完美驱动。

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