


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。

Hot AI Tools

Undresser.AI Undress
AI-powered app for creating realistic nude photos

AI Clothes Remover
Online AI tool for removing clothes from photos.

Undress AI Tool
Undress images for free

Clothoff.io
AI clothes remover

AI Hentai Generator
Generate AI Hentai for free.

Hot Article

Hot Tools

Notepad++7.3.1
Easy-to-use and free code editor

SublimeText3 Chinese version
Chinese version, very easy to use

Zend Studio 13.0.1
Powerful PHP integrated development environment

Dreamweaver CS6
Visual web development tools

SublimeText3 Mac version
God-level code editing software (SublimeText3)

Hot Topics



PS "Loading" problems are caused by resource access or processing problems: hard disk reading speed is slow or bad: Use CrystalDiskInfo to check the hard disk health and replace the problematic hard disk. Insufficient memory: Upgrade memory to meet PS's needs for high-resolution images and complex layer processing. Graphics card drivers are outdated or corrupted: Update the drivers to optimize communication between the PS and the graphics card. File paths are too long or file names have special characters: use short paths and avoid special characters. PS's own problem: Reinstall or repair the PS installer.

Frequently Asked Questions and Solutions when Exporting PS as PDF: Font Embedding Problems: Check the "Font" option, select "Embed" or convert the font into a curve (path). Color deviation problem: convert the file into CMYK mode and adjust the color; directly exporting it with RGB requires psychological preparation for preview and color deviation. Resolution and file size issues: Choose resolution according to actual conditions, or use the compression option to optimize file size. Special effects issue: Merge (flatten) layers before exporting, or weigh the pros and cons.

The main reasons why you cannot log in to MySQL as root are permission problems, configuration file errors, password inconsistent, socket file problems, or firewall interception. The solution includes: check whether the bind-address parameter in the configuration file is configured correctly. Check whether the root user permissions have been modified or deleted and reset. Verify that the password is accurate, including case and special characters. Check socket file permission settings and paths. Check that the firewall blocks connections to the MySQL server.

The default style of the Bootstrap list can be removed with CSS override. Use more specific CSS rules and selectors, follow the "proximity principle" and "weight principle", overriding the Bootstrap default style. To avoid style conflicts, more targeted selectors can be used. If the override is unsuccessful, adjust the weight of the custom CSS. At the same time, pay attention to performance optimization, avoid overuse of !important, and write concise and efficient CSS code.

Export default in Vue reveals: Default export, import the entire module at one time, without specifying a name. Components are converted into modules at compile time, and available modules are packaged through the build tool. It can be combined with named exports and export other content, such as constants or functions. Frequently asked questions include circular dependencies, path errors, and build errors, requiring careful examination of the code and import statements. Best practices include code segmentation, readability, and component reuse.

The solution to MySQL installation error is: 1. Carefully check the system environment to ensure that the MySQL dependency library requirements are met. Different operating systems and version requirements are different; 2. Carefully read the error message and take corresponding measures according to prompts (such as missing library files or insufficient permissions), such as installing dependencies or using sudo commands; 3. If necessary, try to install the source code and carefully check the compilation log, but this requires a certain amount of Linux knowledge and experience. The key to ultimately solving the problem is to carefully check the system environment and error information, and refer to the official documents.

The following steps can be used to resolve the problem that Navicat cannot connect to the database: Check the server connection, make sure the server is running, address and port correctly, and the firewall allows connections. Verify the login information and confirm that the user name, password and permissions are correct. Check network connections and troubleshoot network problems such as router or firewall failures. Disable SSL connections, which may not be supported by some servers. Check the database version to make sure the Navicat version is compatible with the target database. Adjust the connection timeout, and for remote or slower connections, increase the connection timeout timeout. Other workarounds, if the above steps are not working, you can try restarting the software, using a different connection driver, or consulting the database administrator or official Navicat support.

H5 page production process: design: plan page layout, style and content; HTML structure construction: use HTML tags to build a page framework; CSS style writing: use CSS to control the appearance and layout of the page; JavaScript interaction implementation: write code to achieve page animation and interaction; Performance optimization: compress pictures, code and reduce HTTP requests to improve page loading speed.
