Total no of records in a recordset?

Question

I creating an application in which I send a query to database. Then loop through the ResultSet object and increment a counter to find the total no. of records in it, and then a generate JLabel array equal to the size of counter which is application's requirement. But it's not an effecient way. I looked in API for the ResultSet's methods but i didn't find any method which should return the total no. of records in a ResultSet object. any other way?

Answer 1

Sir,
No.There is no direct way. There wasn't last week. There wasn't last year. There isn't one now. There won't be next week.
There are three ways to do it.
1) You can call next through each row and increment a counter.
2) You can jump to the last row and call getRow which will return you the row number of the last row aka the number of rows in the Result Set. (Note you need a scrollable cursor for this one. )
3) You can make use of SQL COUNT. Either have a seperate query that is the same as your select but it returns COUNT instead of columns or use COUNT as a field you select. (Note this method will be fastest and should be the least resource intensive if you only want the count of rows but it can have problems if for example your query uses GROUP in which the COUNT will be something else then...)
Sincerely,
Slappy