SQL中包含1左边那个引号[`]，就会报错

[figozhu]

Please answer these questions before submitting your issue. Thanks!

1. What did you do?

   ./soar -query "SELECT f1 + f2 AS `total_num` FROM tb"

2. What did you expect to see? 能正常解析

3. What did you see instead?

SELECT
f1 + f2 AS total_num : command not found
FROM
tb

## MySQL执行出错

syntax error at position 30 near ':'

4. What version of are you using (`soar -version`)?
Version: 2018-10-23 16:27:51 +0800 @7519019
Branch: master
Compile: 2018-10-23 18:26:17 +0800 by go version go1.10.4 linux/amd64
GitDirty: 105

[withlin]

33