**Describe the bug**

Table schema:
> mysql> show create table name\G
> 
> *************************** 1. row ***************************
>        Table: name
> Create Table: CREATE TABLE `name` (
>   `id` bigint(20) unsigned NOT NULL AUTO_INCREMENT,
>   `username` varchar(40) DEFAULT NULL,
>   `1m_10m` smallint(6) DEFAULT NULL,
>   PRIMARY KEY (`id`)
> ) ENGINE=InnoDB AUTO_INCREMENT=178 DEFAULT CHARSET=latin1

When doing DB creation:

>  CREATE DATABASE clickhouse_test ENGINE = MaterializeMySQL('192.168.153.132:3306', 'clickhouse_test', 'root', 'password');

Got error message:

> Code: 62. DB::Exception: Received from 192.168.153.132:9000. DB::Exception: Syntax error: failed at position 80 ('1m_10m'): 1m_10m) VALUES. Wrong number.

if (pos < end && *pos == '>')
                return Token(TokenType::NotEquals, token_begin, ++pos);
            return Token(TokenType::Less, token_begin, pos);
        }
        case '>':   
        {
            ++pos;
            if (pos < end && *pos == '=')
                return Token(TokenType::GreaterOrEquals, token_begin, ++pos);
            return Token(TokenType::Greater, token_begin, pos);
        }
        case '?':
            return Token(TokenType::QuestionMark, token_begin, ++pos);
        case ':':
            return Token(TokenType::Colon, token_begin, ++pos);
        case '|':
        {
            ++pos;
            if (pos < end && *pos == '|')
                return Token(TokenType::Concatenation, token_begin, ++pos);
            return Token(TokenType::ErrorSinglePipeMark, token_begin, pos);
        }
        case '@':
        {
            ++pos;
            if (pos < end && *pos == '@')
                return Token(TokenType::DoubleAt, token_begin, ++pos);
            return Token(TokenType::At, token_begin, pos);
        }
        default: