sql_mode=NO_AUTO_VALUE_ON_ZERO

cause

Columnstore Query Stats - fatal error runing mysql_real_query() in libmysql_client lib (1062)(Duplicate entry '0' for key 'PRIMARY')

error.

utils/querystats/querystats.cpp

shows, that '0' is used.

    ostringstream insert;

    insert << "insert into querystats values (0, ";

    insert << fSessionID << ", ";

    insert << "'" << fHost << "', ";