Do prepared statements slow down program conspicuously?

Question

I am writing a software that requires me to prepare statements and set the values, execute the query and get results within a loop. This loop might have over 7,000 cycles. If I use simple statements rather than prepared statements, will the execution speed change greatly?

Here is the pseudo code

1. Prepare Statements
2. Get a list from somewhere
3. Iterate through the list
4. get the prepared statements and do some db querying and close the new resources like result sets.
5. populate a map using the result and values from the initial list

Thanks.

Answer 1

Prepared statements are FASTER then non-prepared statements if you repeatedly use the same statement with multiple sets of data. I'm unaware of a situation where this is not true.

Once you've prepared a statement, its sent to the DB server which then only has to accept the data each time you call it -- it doesn't have to reprocess the statement every time you bind new data.

So the simple answer is:

No. They don't.

Answer 2

Prepared statement are faster for repetitive tasks.

http://download.oracle.com/javase/tutorial/jdbc/basics/prepared.html :

If you want to execute a Statement object many times, it normally reduces execution time to use a PreparedStatement object instead.