Re: MySQL: Random select with specific count of a column

From: Date: Wed, 30 Jun 2004 09:10:42 +0000
Subject: Re: MySQL: Random select with specific count of a column
References: 1  Groups: php.db 
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Hi Torsten, until now,the best i could get was getting 6 random rows...still working on ensuring to retrive just 2 rows for category...meanwhile,you can solve the problem easily with a php loop trough the following query: select field_id , language , category from yourtable where language = 'de' group by category , field_id order by category , rand() limit 6; PS1: i'm considering you're using just one table and my table structure is as follows: yourtable (field_id , language, category). in case you're using more than 1 table, just add the required joins... hope this helps. Rui Cunha Torsten Roehr writes:
"Pablo M. Rivas" <pmrivas01@yahoo.com.ar> wrote in message news:12572007801.20040629110044@yahoo.com.ar...
Hello Torsten,
     This is one, but I think you can find another one:
     Supose your table is called tablename 
     select * from tablename as a left join tablename as b on
     a.category = b.category and a.name<>b.name and
     a.language=b.language where a.language='de' and b.name is not
     null group by a.category
Hi Pablo, thanks for your help. Unfortunately it's always returning the same row for each category (maybe because of the group by) and only one row for each category. I need to select 2 random rows for each category. Any more ideas? Thanks, Torsten


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