Usually we need to retrieve the Historian data using SQL language, by creating some stored procedures called from our applications.
In this article, we will talk about conditions used for TagName filter. As you know, there are several ways to get data from Wonderware Historian with Tagname filter. Here are some of them: Using “=” Using “Like” with “%” Using “IN” condition The three methods are correct and work fine. We just need to remember that we can’t do 2 “Like” in the s