vendor/topthink/think-orm/src/db/BaseQuery.php

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<?php
// +----------------------------------------------------------------------
// | ThinkPHP [ WE CAN DO IT JUST THINK ]
// +----------------------------------------------------------------------
// | Copyright (c) 2006~2019 http://thinkphp.cn All rights reserved.
// +----------------------------------------------------------------------
// | Licensed ( http://www.apache.org/licenses/LICENSE-2.0 )
// +----------------------------------------------------------------------
// | Author: liu21st <liu21st@gmail.com>
// +----------------------------------------------------------------------
declare (strict_types = 1);

namespace think\db;

use think\Collection;
use think\db\exception\DataNotFoundException;
use think\db\exception\DbException as Exception;
use think\db\exception\ModelNotFoundException;
use think\helper\Str;
use think\Model;
use think\Paginator;

/**
 * 数据查询基础类
 */
abstract class BaseQuery
{
    use concern\TimeFieldQuery;
    use concern\AggregateQuery;
    use concern\ModelRelationQuery;
    use concern\ResultOperation;
    use concern\Transaction;
    use concern\WhereQuery;

    /**
     * 当前数据库连接对象
     * @var Connection
     */
    protected $connection;

    /**
     * 当前数据表名称（不含前缀）
     * @var string
     */
    protected $name = '';

    /**
     * 当前数据表主键
     * @var string|array
     */
    protected $pk;

    /**
     * 当前数据表自增主键
     * @var string
     */
    protected $autoinc;

    /**
     * 当前数据表前缀