Hi :)
MariaDb is a drop-in replacement for MySql and is developing much faster.  It 
might not help with the current problems but it might be worth thinking about 
moving to it sometimes fairly soon.  
http://mariadb.org/
http://en.wikipedia.org/wiki/MariaDB
Presumably it just reads the same data so it shouldn't involve any actual 
changes and could run alongside MySql so that you could test it without 
committing to it.  I haven't tried it but hopefully they make it easy to 
migrate!

Anyway, all that is a side-issue.  
Regards from
Tom :)



--- On Tue, 3/1/12, Andreas Säger <[email protected]> wrote:

> From: Andreas Säger <[email protected]>
> Subject: [libreoffice-users] Re: Base/SQL help
> To: [email protected]
> Date: Tuesday, 3 January, 2012, 16:37
> All the wizards and graphical tools
> are more or less broken. What the query
> designer can do properly can be done by SQL learners after
> the very first
> lessons had been learned. Anything slightly advanced has to
> be done in plain
> SQL.
> 
> MySQL has a datediff function:
> http://www.w3schools.com/sql/func_datediff_mysql.asp
> 
> In Base syntax (parsed mode, should also work in graphical
> view):
> SELECT "date" AS "Date","ip"||' - '||"serial" AS "Printer",
> SUM("counter")AS
> "Sum"
> FROM "modifiedprintusage"
> WHERE DATEDIFF('dd', CURRENT_DATE, "date")<3
> GROUP BY "date","ip","serial"
> 
> In MySQL syntax (direct SQL mode)
> In Base syntax:
> SELECT `date` AS `Date`,`ip`||' - '||`serial` AS `Printer`,
> SUM(`counter`)AS
> `Sum`
> FROM `modifiedprintusage`
> WHERE DATEDIFF( CURDATE(), `date`)<3
> GROUP BY `date`,`ip`,`serial`
> 
> It is supposed to return this 3-column table:
> Date  |  Printer  |  Sum
> 2012-01-02 | 192.168.023 - Epson Blurb  |  232
> 2012-01-02 | 192.168.024 - HP Spitfire  |  1023
> ...
> 
> --
> View this message in context: 
> http://nabble.documentfoundation.org/Base-SQL-help-tp3627698p3629585.html
> Sent from the Users mailing list archive at Nabble.com.
> 
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