thinkphp/library/think/db/builder/Sqlsrv.php

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<?php
// +----------------------------------------------------------------------
// | ThinkPHP [ WE CAN DO IT JUST THINK IT ]
// +----------------------------------------------------------------------
// | Copyright (c) 2006-2012 http://thinkphp.cn All rights reserved.
// +----------------------------------------------------------------------
// | Licensed ( http://www.apache.org/licenses/LICENSE-2.0 )
// +----------------------------------------------------------------------
// | Author: liu21st <liu21st@gmail.com>
// +----------------------------------------------------------------------

namespace think\db\builder;

use think\db\Builder;

/**
 * Sqlsrv数据库驱动
 */
class Sqlsrv extends Builder
{
    protected $selectSql       = 'SELECT T1.* FROM (SELECT thinkphp.*, ROW_NUMBER() OVER (%ORDER%) AS ROW_NUMBER FROM (SELECT %DISTINCT% %FIELD% FROM %TABLE%%JOIN%%WHERE%%GROUP%%HAVING%) AS thinkphp) AS T1 %LIMIT%%COMMENT%';
    protected $selectInsertSql = 'SELECT %DISTINCT% %FIELD% FROM %TABLE%%JOIN%%WHERE%%GROUP%%HAVING%';
    protected $updateSql       = 'UPDATE %TABLE% SET %SET% FROM %TABLE% %JOIN% %WHERE% %LIMIT% %LOCK%%COMMENT%';
    protected $deleteSql       = 'DELETE FROM %TABLE%  %USING% FROM %TABLE%  %JOIN% %WHERE% %LIMIT% %LOCK%%COMMENT%';

    /**
     * order分析
     * @access protected
     * @param mixed $order
     * @param array $options
     * @return string
     */
    protected function parseOrder($order, $options = [])
    {
        if (is_array($order)) {
            $array = [];
            foreach ($order as $key => $val) {
                if (is_numeric($key)) {
                    if (false === strpos($val, '(')) {
                        $array[] = $this->parseKey($val, $options);
                    } elseif ('[rand]' == $val) {
                        $array[] = $this->parseRand();
                    }
                } else {
                    $sort    = in_array(strtolower(trim($val)), ['asc', 'desc']) ? ' ' . $val : '';
                    $array[] = $this->parseKey($key, $options) . ' ' . $sort;
                }
            }
            $order = implode(',', $array);
        }
        return !empty($order) ? ' ORDER BY ' . $order : ' ORDER BY rand()';
    }

    /**
     * 随机排序
     * @access protected
     * @return string
     */
    protected function parseRand()
    {