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Build MySQL from source with debug enabled
Posted by: Zhan Li
Date: April 07, 2014 12:49PM

Hi All,

I'm building mysql-5.6.16 from source on RedHat. I was wondering how to enable debug option so that the DBUG statements in the source code would be executed?

To be more specific, in sql_planner.cc file, there's DBUG_EXECUTE() in greedy_search() as following:

DBUG_EXECUTE("opt", print_plan(join, n_tables, record_count, read_time, read_time, "optimal"););

I'd like to see the printed out "optimal plan", what should I do? Thanks.

Cheers,
Zhan

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Build MySQL from source with debug enabled
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April 07, 2014 12:49PM


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