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Read Buffers, mmap, malloc and MySQL Performance

 | September 12, 2007 |  Posted In: Insight for DBAs

Monty Taylor posted interesting investigation of the fact read_buffer_size variable affects connection speed. This is not something you would expect right ? me too. Not only global user data is expected to be cached on startup but even if it is not why would you do full table scan to fetch single user information ? […]

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Should MySQL Extend GROUP BY Syntax ?

 | August 17, 2007 |  Posted In: Insight for Developers

Jan has a good article about finding the row matching some value in the group: This is one illustration of group by limitations in SQL language which is not offset by any MySQL specific extensions,yet As you can see if you want to get one row from the group which is sorted some way you […]

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