16. The computer-implemented method of claim 1 , further comprising: generating a report that includes the information that indicates a result of the comparison.
16. The computer-implemented method of claim 1 , further comprising: generating a report that includes the information that indicates a result of the comparison. 17. The computer-implemented method of claim 16 , wherein: the report further includes a recommendation for a database query language statement in the set of targeted database query language statements whose performance in the second database system is worse than performance in the first database system; the recommendation is to tune the database query language statement.