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Tip of the Day
Language: Relational Databases
Expertise: Beginner
May 13, 1997



Building the Right Environment to Support AI, Machine Learning and Deep Learning

Tables and SQL

How do you count the number of rows displayed in a DBGrid when displayed through a query? Using TQuery, I get 50 to 60 files, but want to know exactly how many rows passed the SQL query and are now being displayed.

It's funny that something as important as row statistics is not well-documented in Delphi. Oh well, there's a lot to the program.

For TTable, TQuery and TStoredProc (if it returns a pointer to a cursor), you can get the Count of records by calling the RecordCount method, and the current record on which the cursor is positioned with the RecNo method.

To get a count of the number of rows returned from a query, don't look to the DBGrid. Instead, look to the TQuery itself, and use its RecordCount property to get the number of records being pointed at by its cursor.

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