title: How to query for rows containing <Unable to read data> in a column?
body: <p>I have a SQL table in which some columns, when viewed in SQL Server Manager, contain <code>&lt;Unable to read data&gt;</code>. Does anyone know how to query for <code>&lt;Unable to read data&gt;</code>?  I can individually modify the data in this column with <code>update table set column = NULL where key = 'value'</code>, but how can I find whether additional rows exist with this bad data?</p>