Excuse me, I think this is not the right forum, but I can't find one that seems more appropriate than this.
I am totally neophyte in AF.
I'm trying to plot in a ProcessBook trend a SQL Server table data via AF, I created an item, that item I've added an attribute, I intend to show the data for a period of time, with the following SQL statement:
SELECT ConcentradoSeco FROM tblDesviacionesProduccion WHERE Fecha>= #%StartTime%# AND Fecha <= #%EndTime%# ORDER BY Fecha
The result is <null>, do I have to format dates?, %StartTime% and %EndTime% would correspond to the start date and end of the display? Should it do otherwise?
Thanks in advance.