Counting rows
You can count rows to determine how many rows meet a given set of criteria. For example, you might want to know how many customers fall within a certain zip code range, or how many orders were taken on Tuesday.
To count rows,
Choose Table|Count Rows. The Count Rows dialog box appears.
Specify the rows to include in the count, then choose OK.
dBASE Plus counts the number of rows that meet the criteria, then displays that number in a message box.