Repeated retrieval in result set returns null

Question

I\'m having an issue with ResultSet.getString where when I call it the first time it returns the value but the second time returns null (this without closing the re

Answer 1

From the Javadoc:

For maximum portability, result set columns within each row should be read in left-to-right order, and each column should be read only once.

Under the hood, you are consuming bytes from a TCP stream, so it isn't too surprising that you can't retrieve the same column value twice.