Explain sql execute error

[zebozhuang]

Versions

eg: 0.7.1

Describe the bug

I build quicksql and start up the server, I ran by using quicksql.sh command as following

./bin/quicksql.sh -e "EXPLAIN select * from example limit 5"

To Reproduce

Steps to reproduce the behavior:

1. Go to '...'
2. Click on '....'
3. Scroll down to '....'
4. See error

Expected behavior

The description about the sql performance.

Actual behavior

RuntimeException

Full Output Logs

2022-04-01 15:09:33,133 [main] INFO - job.execute.start:2022-04-01 15:09:33:133
2022-04-01 15:09:33,190 [main] INFO - Your SQL is 'EXPLAIN select * from example limit 5'
java.lang.RuntimeException: Encountered "select" at line 1, column 10.
Was expecting:
"PLAN" ...

at com.qihoo.qsql.utils.SqlUtil.parseTableName(SqlUtil.java:26)
at com.qihoo.qsql.launcher.ExecutionDispatcher.main(ExecutionDispatcher.java:84)

2022-04-01 15:09:33,267 [main] ERROR - execution.error:Encountered "select" at line 1, column 10.
Was expecting:
"PLAN" ...

Additional context

Add any other context about the problem here.