Comments on: High Performance MySQL, Second Edition: Advanced SQL Functionality

By: High Performance MySQL, Second Edition: Query Performance Optimization at Xaprb

High Performance MySQL, Second Edition: Query Performance Optimization at Xaprb — Sun, 07 Oct 2007 20:05:29 +0000

[…] Archives « High Performance MySQL, Second Edition: Advanced SQL Functionality […]

By: Xaprb

Xaprb — Fri, 05 Oct 2007 22:11:02 +0000

Advanced MySQL Features it is (he decides, without consulting the other authors ;-)

By: Xaprb

Xaprb — Fri, 05 Oct 2007 22:09:50 +0000

Yeah, that’s a good idea.

By: Lukas

Lukas — Fri, 05 Oct 2007 22:05:18 +0000

Well I would get rid of “SQL” in the chapter name. “Advanced” is fine. Maybe replace “SQL” with “Features” or “Functionality”.

By: Xaprb

Xaprb — Fri, 05 Oct 2007 22:01:13 +0000

It is quite a fuzzy term, isn’t it? I never thought of it this way, but maybe the chapter is just flat-out named wrong. Can you think of a better name? I’ve got tunnel vision at the moment, so I’m not coming up with anything better.

SQL hints are in the optimization chapter, where we talk about the query optimizer and how to influence it. I should post the outline for that one too; it’s mostly done.

WITH ROLLUP should go in the GROUP BY optimization section, which is NOT written yet. I’ll make a note of this if it’s not there yet. Thanks!

By: Lukas

Lukas — Fri, 05 Oct 2007 21:58:13 +0000

I think for federated it is enough at this point to just say there are way too limited at this point. Also the term “advanced SQL” seems a bit fuzzy to me now that I see topics like merge tables. I would expect advanced stuff I can write into my DML queries (not so much DDL). So stuff like “WITH ROLLUP”, maybe even SQL hints (though that would better fit in an optimization chapter).

By: Xaprb

Xaprb — Fri, 05 Oct 2007 16:26:31 +0000

William, thanks for the suggestion. I’m going to have to bring this up via email with the authors and editor (and I’ll check chapter 2, which might already include it).

Lukas, those are good topics. I will have to double-check but I think we cover them in chapter 5, Query Optimization.

By: Lukas

Lukas — Fri, 05 Oct 2007 15:39:44 +0000

Hmm aggregates and group by in general seems to be missing.

By: William Newton

William Newton — Fri, 05 Oct 2007 15:24:23 +0000

I’d like to see some information about federated tables as well. I think it would make sense to include them in the section about merge tables and partitioning. I’d also like to see some discussion about when it make sense to use which one of the methods.