BUG: SQLCommon::short_sql does not trim insert stmt as expected

[dantengsky]

Summary

SQLCommon::short_sql is expected to trim insert SQL to string, which length is at most 64.

but, it does not.

How to reproduce:

• execute a long insert sql
• select the query log from system.query_log
  e.g. select * from system.query_log where query_text like "insert%"

[BohuTANG]

Add a new QueryConfig for query_log name like query_log_enabled (default is true)?

[BohuTANG]

Add a new QueryConfig for query_log name like query_log_enabled (default is true)?

It seems max_query_log_size=0 can do that.