<se:sqlquery sql="select nr, title from vwActive where nr=2" save="buffer1" resulttype="datatable" />

<se:format
    inputdata="{datatable.columns.getnames(buffer1)}"
    rowformat="Field '{this.field(key)}' of type '{this.field(value)}'"
    rowdelimiter=","
/>

<se:xmldatatable save="mytable" resulttype="datatable">
    <se:row>
        <se:col name="Nr">2</se:col>
        <se:col name="Title">Welcome</se:col>
    </se:row>
</se:xmldatatable>

{datatable.columns.getname($mytable, 1)} => Nr
{datatable.columns.getnames($mytable)} => Datatable
{datatable.columns.exists($mytable, Title)} => true
{datatable.columns.getordinal($mytable, Title)} => 2