Procedures are added to an information link in the same way as any other elements such as a column or a filter. You select them from the Elements tree and click Add >. The procedure icon looks like this:
Priority of Execution:
You can include column elements, filter elements and procedure elements in the same information link. These will be executed in a certain priority order when the information link is executed:
All pre-update procedures will execute in top-down order. The procedure is executed before any data is retrieved. No data is expected from the pre-update procedure, and no join is performed. Any prompting will occur in the top-down order.
All query procedures and column elements will execute in top-down order. The procedures run as a part of the data retrieval. Data from the procedures are joined with the rest of the columns. Any prompting will occur in the top-down order.
All post-update procedures will execute in top-down order. The procedure is executed after the data has been retrieved. No data are expected from the post-update procedure, and no join is performed. Any prompting will occur in the top-down order.
Note that the order of the elements in the user interface only has significance for the elements of the same "priority class". A pre-update procedure will always execute before a query procedure regardless if that pre-update procedure is placed at the bottom of the list.
See also: