From: "Gabriel Genellina" <gagenellina@softlab.com.ar>

<dtml-in "restrictedTraverse(PathToSqlMethod)()"> <dtml-var AnyFieldName>, </dtml-in>

So I need to call the SQLMethod explicitly, and then it returns a sequence that <dtml-in> can handle (at least, this is what I guess.)

That is correct. Lets see what the above code does: 1. restrictedTraverse(PathToSQLMethod): restrictedTraverse looks through the Zope DB and tries to find the object specifieed and return it. In this case it is an SQL method. 2.(): You call the returned object. In this case it will make a SQL query and return a list of records that you iterate over. This is equivalent to: <dtml-let sql="restrictedTraverse(PathToSqlMethod)"> <dtml-in "sql()"> As you see the difference between this and your original code is that you had: <dtml-in sql> What you do here is that you give dtml the name of something (sql). If the named object is callable, dtml will first call it, then use it. When you put things in an expression, it will evaluate that expression, but it will not call the result of the evaluated expression. So, if you had written <dtml-in "sql"> it would try to iterate over the sql method, instead of the sql methods result.