The IsNull function in Crystal allows us to deal efficiently with nulls, or empty fields, in a data source. I talked about this in an earlier post. We don’t want to skip partly empty records, in most cases. But if we bring in nulls, we …
Crystal Reports handles nulls, or completely unfilled fields, in a particular way. And it’s very important that anyone using the program understands the details clearly. A null, in Crystal’s view, is a database field which never had anything in it, and doesn’t now. A real-life …
We usually have to export data from Crystal Reports, for a couple of reasons. One is, the program normally has to be there to read a Crystal file, so exporting allows others to read something. And unless the report is on a shared drive, it …
When we print a report in any database-connected situation, we sometimes get blank results, i.e. nothing to report. But we certainly don’t want to waste paper on such a thing. So how can we let a user know about it without sending more than one …
Fields, in Crystal Reports, are the way we bring data from a source into a report. Sometimes, we need to combine the data with text even more directly than placing them side by side. The technique we can use is similar to creating a mail …
When we use conditional formatting, we usually think of it in terms of things like making better sales numbers green and lower numbers red. But we can be more subtle than that in Crystal. A common example is where records are incomplete, or where data …
As we get into some of the more subtle ways to use grouping in Crystal Reports, we sometimes find that either groups of groups, or arranging them in a hierarchy, can improve the usefulness of the report. One key to a good report is to …
When setting up layouts in Crystal Reports, the parameter field can be a tremendously helpful feature. As with a parameter query in Microsoft Access, it gives the report a significant degree of flexibility. The report’s basic structure and purpose are the same, but the ability …
When you run a report in Crystal Reports, you have a lot of latitude as to what goes in, how to format and organize, and so on. But one consideration that doesn’t always come up is how to filter, or leave data out. Turns out, …
In this Crystal Reports tutorial you will learn how to link tables within a Crystal Report. You will also learn how the difference between a left outer join, right outer join and inner join.