[ bug ] 解析表出错或者表不存在，无法展示表信息

[dongqianzheng]

优化工具-sql tuning 分析结果报错。

重现步骤

1. lower_case_table_names=0
   2.创建一个表名为大写的表

期待结果和实际结果

实际结果:

错误日志

[2020-08-04 18:49:59,319][DummyThread-4:139942869869776][task_id:default][mysql.py:141][WARNING]- MySQL语句执行报错，语句：show create table dong;，错误信息Traceback (most recent call last):
File "/usr/local/archery/sql/engines/mysql.py", line 130, in query
effect_row = cursor.execute(sql)
File "/opt/python3/lib/python3.7/site-packages/MySQLdb/cursors.py", line 250, in execute
self.errorhandler(self, exc, value)
File "/opt/python3/lib/python3.7/site-packages/MySQLdb/connections.py", line 50, in defaulterrorhandler
raise errorvalue
File "/opt/python3/lib/python3.7/site-packages/MySQLdb/cursors.py", line 247, in execute
res = self._query(query)
File "/opt/python3/lib/python3.7/site-packages/MySQLdb/cursors.py", line 412, in _query
rowcount = self._do_query(q)
File "/opt/python3/lib/python3.7/site-packages/MySQLdb/cursors.py", line 375, in _do_query
db.query(q)
File "/opt/python3/lib/python3.7/site-packages/MySQLdb/connections.py", line 276, in query
_mysql.connection.query(self, query)
_mysql_exceptions.ProgrammingError: (1146, "Table 'for_incep_t.dong' doesn't exist")

版本信息

应用版本/分支：
v1.7.4
部署方式：手工部署

是否是大小写转换，导致找不到这张表。

[hhyo]

已确认，在表解析时做了小写转换，下版本修复