ORDER BY causing disk space error

[cesarcesar]

The following query is causing a mysql error The Error number is 28, which means low disk space. So I clear some space, retry and get the error again after a few times querying. After playing with query i find that the ORDER BY statement is what make it fail. If i remove it the script runs.

 

So my question is, is there something about an ORDER BY statement that takes up a lot of disk space? I can sort in PHP, but if MySQL has the ability then i prefer it to sort with.

 

Thanks for all the suggestions.

 

SELECT data.datasize AS size, data.dataid AS id, data.datatype, data.dataname, data.datadescription AS description, data.engineerid AS owner, datalog.usability AS usability,datalog.easeofdownload AS easeofdownload, datalog.docaccuracy AS accuracy, datalog.timesdownloaded AS timesd, datalog.ratings AS ratings from data, datalog where data.datatype = 'AE Training video' AND data.dataid = datalog.dataid ORDER BY data.dataname

[fenway]

You shouldn't ever have low disk space! On a DB server?

[cesarcesar]

You shouldn't ever have low disk space! On a DB server?

Yes Si-fu

[fenway]

Anyway, order by makes a temporary table, which is likely your issue... depending on your memory situation, you might be able to increase the temporary table size.