问题
Below I have a capture from the Glimpse sql tab. Note that there are 2 duration columns. One to the right of the record count, and the other is the left most column. The numbers do not match. Why are there two columns? Are they measuring different things?
回答1:
The one on the right most side (i.e. 200.07ms and 211.85ms) are how long the connection was opened for. The one next to the record count, is how long the command took to execute.
来源：https://stackoverflow.com/questions/23401358/why-are-there-2-durations-on-the-glimpse-sql-tab