Databases
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    1. POMySQL 5.5 "select distinct" is really slow
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    1. USdkretz
    1. USdkretz
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      1. VTUpMod
    1. COI'm not sure what your point is. My ORM is less of a problem than my RDBMS. I can obviously bypass any part of the abstraction layer easily except SQL (as Joel observes), but even if I could put inline assembly language in my SQL statements, that wouldn't be the *right* answer here. MySQL 5.5 is significantly worse than MySQL 5.1 (and 5.0 and Postgres and everything else I've tried) in some obvious cases, and "stay with an old version" is a very easy solution. Did you have a better answer here?
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      1. USKen
    2. COI first answered your question assuming it was described in the title; when in fact your question is not about mysql (the answer being to leave "DISTINCT" out of your query) where the real problem seems to be NHibernate. But if it has an exit to direct SQL insertion, why not just use it? Ultimately NHibernate is going to need to adapt to MySQL and not vice versa. In your context SQL insertion would be the equivalent of assembly insertion. Maybe for you staying with an old version is preferable, dunno. YMMV. But it's not like MySQL is doing something illegitimate.
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    3. COI don't know why you say it's "not about mysql". It's absolutely about MySQL, with the requirement that I can't modify the query arbitrarily. Obviously the question is not simply "how many records are in this table?", since even at 90 seconds that's far less time than I spent typing this question. My system builds arbitrary queries where sometimes DISTINCT is necessary, and the easiest place to recognize this is in MySQL, and in fact MySQL up to 5.1 seemed to do exactly this.
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Guidance
A row detail

Detail views are divided into sections. All the information in the data section comes from columns in the selected row. The other sections display data from other, related rows.

Related data can be related in a to-one or a to-many fashion. Captions of data related in a to-many fashion link to a list view showing a filtered view of the table.

Try moving around until you find a non-empty to-many entry and click on the label to get to one. You can move back to the root by clicking on the database name in the header.

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