**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[1] == 'x' || pos[1] == 'X')
                        hex = true;
                    pos += 2;
                }
                else
                    ++pos;
                while (pos < end && (hex ? isHexDigit(*pos) : isNumericASCII(*pos)))
                    ++pos;
                
                if (pos < end && *pos == '.')
                {
                    ++pos;
                    while (pos < end && (hex ? isHexDigit(*pos) : isNumericASCII(*pos)))
                        ++pos;
                }
                
                if (pos + 1 < end && (hex ? (*pos == 'p' || *pos == 'P') : (*pos == 'e' || *pos == 'E')))
                {
                    ++pos;
                    
                    if (pos + 1 < end && (*pos == '-' || *pos == '+'))
                        ++pos;
                    while (pos < end && isNumericASCII(*pos))
                        ++pos;
                }
            }
            
            if (pos < end && isWordCharASCII(*pos))
            {
                ++pos;