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

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<?php
// +----------------------------------------------------------------------
// | ThinkPHP [ WE CAN DO IT JUST THINK ]
// +----------------------------------------------------------------------
// | Copyright (c) 2006~2018 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;

/**
 * Sqlite数据库驱动
 */
class Sqlite extends Builder
{

    /**
     * limit
     * @access public
     * @param string $limit
     * @return string
     */
    public function parseLimit($limit)
    {
        $limitStr = '';
        if (!empty($limit)) {
            $limit = explode(',', $limit);
            if (count($limit) > 1) {
                $limitStr .= ' LIMIT ' . $limit[1] . ' OFFSET ' . $limit[0] . ' ';
            } else {
                $limitStr .= ' LIMIT ' . $limit[0] . ' ';
            }
        }
        return $limitStr;
    }

    /**
     * 随机排序
     * @access protected
     * @return string
     */
    protected function parseRand()
    {
        return 'RANDOM()';
    }

    /**
     * 字段和表名处理
     * @access protected
     * @param mixed  $key
     * @param array  $options
     * @return string
     */
    protected function parseKey($key, $options = [], $strict = false)
    {