Some of the features of QlikView Training are not frequently blogged about. These features are used on a day-to-day basis, and developers often don't give them any thought. If you're unaware of these techniques, you should revisit them before reading this article. One feature that we will be talking about today is the Preceding Load.
What Is a Preceding Load?Knowing exactly what a Preceding Load is will be important here. As the name implies, a Preceding Load occurs before, prior to, or in front of another load. Even if you're not aware of it, you've probably used a Preceding Load before. For a basic Preceding Load example, let's imagine that there is an SQL SELECT statement while loading from an OLEDB or ODBC data source. As an option, the wizard could add a LOAD section prior to SELECT. Using one of these ahead of a database load is always recommended, as doing so opens up a complete range of syntax that is unavailable in the SQL statement.
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