When using multiple queries, affected row metrics may be inaccurate.

[jackysp]

Bug Report

Please answer these questions before submitting your issue. Thanks!

1. Minimal reproduce step (Required)

Affected rows only records the last SQL result, using multi-query will miss some. This can be seen in a workload where an insert writes one row at a time - affected rows does not match QPS.

2. What did you expect to see? (Required)

3. What did you see instead (Required)

4. What is your TiDB version? (Required)

fef43c5