What does pre-compiling a JDBC PreparedStatement do?

Question

What does \"precompiling\" a statement do, because I have seen that if I write a prepared statement with a bad SQL syntax that compilation does not report any problem!

Answer 1

'statement compilation' is something that happens on the database which helps it return results faster and more efficiently. If you use a PreparedStatement then it allows the database to reuse a statement which was already compiled and saves having to do it again. Bad SQL will likely result in a badly compiles database statement, but not always.