Hi,<br />
<br />
My SQL in a Data Set is correct, but when I click on Output Columns (in the Data Set Edit view), I get this message :<br />
<br />
<pre class='_prettyXprint _lang-auto _linenums:0'>
A BIRT exception occurred.
Plug-in Provider:Eclipse.org
Plug-in Name:BIRT Data Engine
Plug-in ID:org.eclipse.birt.data
Version:2.5.2.v20100209
Error Code:data.engine.fail.prepareExecution
Error Message:Failed to prepare the query execution for the data set: core_query
Cannot set a null value to parameter 1.
Cannot set preparedStatement null value.
SQL error #1: Parameter metadata not available for the given statement\
</pre>
<br />
Another symptom is, I am unable to expand the Data Set in the Data Explorer view. If I hand-code a Data field though, the value will show up correctly.<br />
<br />
This happens most of the time, but sometimes, for no good reason, it works and all the available fields show up.
