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Re: Query profile: sending data
Posted by: James Brown
Date: January 09, 2009 05:40AM

I've done 2 tests, and both retrieve a number: SELECT COUNT(*) FROM ...
This way, the "sending data" time should be the same. However, one query is more complex than the other and obviously the complex query takes more wall time to execute than the easier one. The thing is that the "sending data" time is not the same: the complex query spends a lot of time "sending data" and the other query spends no time in "sending data". At this point I have 2 hypothesis:

1. The "sending data" time is part of the execution time and has little relation with the real sending data time.
2. The client performs some kind of work so some tables need to be sent to the client (not just the result).

Any idea?

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