thinkphp/library/think/db/builder/Mysql.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;
use think\db\Expression;
use think\db\Query;
use think\Exception;

/**
 * mysql数据库驱动
 */
class Mysql extends Builder
{
    // 查询表达式解析
    protected $parser = [
        'parseCompare'     => ['=', '<>', '>', '>=', '<', '<='],
        'parseLike'        => ['LIKE', 'NOT LIKE'],
        'parseBetween'     => ['NOT BETWEEN', 'BETWEEN'],
        'parseIn'          => ['NOT IN', 'IN'],
        'parseExp'         => ['EXP'],
        'parseRegexp'      => ['REGEXP', 'NOT REGEXP'],
        'parseNull'        => ['NOT NULL', 'NULL'],
        'parseBetweenTime' => ['BETWEEN TIME', 'NOT BETWEEN TIME'],
        'parseTime'        => ['< TIME', '> TIME', '<= TIME', '>= TIME'],
        'parseExists'      => ['NOT EXISTS', 'EXISTS'],
        'parseColumn'      => ['COLUMN'],
    ];

    protected $insertAllSql = '%INSERT% INTO %TABLE% (%FIELD%) VALUES %DATA% %COMMENT%';
    protected $updateSql    = 'UPDATE %TABLE% %JOIN% SET %SET% %WHERE% %ORDER%%LIMIT% %LOCK%%COMMENT%';

    /**
     * 生成insertall SQL
     * @access public
     * @param  Query     $query   查询对象
     * @param  array     $dataSet 数据集
     * @param  bool      $replace 是否replace
     * @return string
     */
    public function insertAll(Query $query, $dataSet, $replace = false)
    {
        $options = $query->getOptions();

        // 获取合法的字段
        if ('*' == $options['field']) {
            $allowFields = $this->connection->getTableFields($options['table']);
        } else {
            $allowFields = $options['field'];
        }