


ThinkPHP2.0读取MSSQL提示Incorrect syntax near the keyword 'AS'的解决方法_php实例
问题代码如下:
<?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); } } ?>
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 $selectSql 在前面加 '//'
并且第326行 的
public function parseLimit($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 $limitStr; }
改为:
public function parseLimit($limit) { return ''; }
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
<?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; } } ?>
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:
<?php class IndexAction extends CommonAction { public function index() { $query = $this->dbsql->Execute('select * from xxx'); while($rows = $query->FetchRow()) { echo $rows['fields']; } } } ?>
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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