vendor/topthink/think-orm/src/db/Builder.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 Closure;
use PDO;
use think\db\exception\DbException as Exception;

/**
 * Db Builder
 */
abstract class Builder
{
    /**
     * Connection对象
     * @var ConnectionInterface
     */
    protected $connection;

    /**
     * 查询表达式映射
     * @var array
     */
    protected $exp = ['NOTLIKE' => 'NOT LIKE', 'NOTIN' => 'NOT IN', 'NOTBETWEEN' => 'NOT BETWEEN', 'NOTEXISTS' => 'NOT EXISTS', 'NOTNULL' => 'NOT NULL', 'NOTBETWEEN TIME' => 'NOT BETWEEN TIME'];

    /**
     * 查询表达式解析
     * @var array
     */
    protected $parser = [
        'parseCompare'     => ['=', '<>', '>', '>=', '<', '<='],
        'parseLike'        => ['LIKE', 'NOT LIKE'],
        'parseBetween'     => ['NOT BETWEEN', 'BETWEEN'],
        'parseIn'          => ['NOT IN', 'IN'],
        'parseExp'         => ['EXP'],
        'parseNull'        => ['NOT NULL', 'NULL'],
        'parseBetweenTime' => ['BETWEEN TIME', 'NOT BETWEEN TIME'],
        'parseTime'        => ['< TIME', '> TIME', '<= TIME', '>= TIME'],
        'parseExists'      => ['NOT EXISTS', 'EXISTS'],
        'parseColumn'      => ['COLUMN'],
    ];

    /**
     * SELECT SQL表达式
     * @var string
     */
    protected $selectSql = 'SELECT%DISTINCT%%EXTRA% %FIELD% FROM %TABLE%%FORCE%%JOIN%%WHERE%%GROUP%%HAVING%%UNION%%ORDER%%LIMIT% %LOCK%%COMMENT%';

    /**
     * INSERT SQL表达式