SphinxQL Data too long for column
===

I'm inserting data into a Sphinx RT index using SphinxQL, which is working fine.  Just occasionally I get really large values in my dataset and I get the following error:

    com.mysql.jdbc.MysqlDataTruncation: Data truncation: Data too long for column 'title' at row 1
     at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:3564)

Is there a way to extend the length of the field? or another column type I could use? Failing that, what *is* the length of the field, so I can truncate my data?

this is what my index looks like:

    index example
    {
          type              = rt
          path              = /var/sphinxsearch/example
          rt_field          = title
          rt_attr_timestamp = timestamp
    }