4.0.20 vs 4.1.16 issue

2006-02-05 Thread C.F. Scheidecker Antunes
Hello all, I was running a legacy app on a MySQL 4.0.20 server. The app queried the server like this "SELECT count(total) as total from tbl_nada" For 4.0.20 the result of this query was an integer. Running the same query on 4.1.16 returns a much larger Integer and the app crashes. Problem

4.0.20 vs 4.1.16 issue

2006-02-05 Thread C.F. Scheidecker Antunes
Hello all, I was running a legacy app on a MySQL 4.0.20 server. The app queried the server like this "SELECT count(total) as total from tbl_nada" For 4.0.20 the result of this query was an integer. Running the same query on 4.1.16 returns a much larger Integer and the app crashes. Problem

Re: MySQL says, "Ich don't think so" (Subquery woes)

2006-02-05 Thread Daniel Kasak
René Fournier wrote: Thanks! I will try this Monday. On a related note, does the 'temporary table' approach (creating, locking, dropping) significantly slow down queries? I haven't had to use them yet, and my application is somewhat performance sensitive, so... just curious. It's actually a *lo

Re: How to create an application for managing users

2006-02-05 Thread Célio Cidral Junior
2006/2/4, sol beach <[EMAIL PROTECTED]>: > What other C# applications have you previously written? > Do you know anything more than how to spell SQL? > Have you ever installed and administered MYSQL? I have been working as a professional programmer for around five years, and have been writing ente

Re: Insert performance

2006-02-05 Thread Heikki Tuuri
Hi! All this was already mentioned in the discussion thread, but I summarize it. To make the InnoDB inserts to run as fast as possible: 1) Tune the buffer pool size and ib_logfile size as recommended at: http://dev.mysql.com/doc/refman/5.0/en/innodb-configuration.html 2) Set: innodb_flush_lo

Re: Performance of MEMORY/HEAP-tables compared to mysql-cluster?

2006-02-05 Thread Heikki Tuuri
Jan, if you make the InnoDB buffer pool big enough to hold all your data, or at least all the 'hot data', and set ib_logfiles large as recommended at http://dev.mysql.com/doc/refman/5.0/en/innodb-configuration.html, then InnoDB performance should be quite close to MEMORY/HEAP performance for