QSqlQuerynext

QSqlQueryNext is a method available in the Qt framework's QSqlQuery class. It is used to advance the query cursor to the next row in the result set. When a QSqlQuery object is created and executed, its cursor is initially positioned before the first row of the results. Calling QSqlQueryNext moves the cursor to the first row, and subsequent calls move it to the second, third, and so on, until the end of the result set is reached.

The QSqlQueryNext method returns a boolean value. It returns true if the cursor was successfully moved to a valid row, meaning there is another record to process. It returns false if the cursor has reached the end of the result set and there are no more rows available. Developers typically use QSqlQueryNext within a loop structure, such as a while loop, to iterate through all the records returned by a database query. Inside the loop, after confirming that QSqlQueryNext returned true, data from the current row can be accessed using methods like value() or by column name. If QSqlQueryNext returns false, the loop terminates, indicating that all records have been processed.