Embedded and client don't agree on whether to continue after error in batch

If an error happens in Statement.executeBatch(), the embedded driver
will stop executing the batch, and
BatchUpdateException.getUpdateCounts() will return an array whose
length equals to the number of statements successfully executed. The
client driver will continue executing the rest of the statements in
the batch, and BatchUpdateException.getUpdateCounts() will return an
array whose length is equal to the number of statements in the batch
(including the failed ones).

The JDBC specification allows both of the behaviours, but it requires
that the behaviour is consistent within one DBMS. See the javadoc for
java.sql.Statement.executeBatch() -
http://java.sun.com/javase/6/docs/api/java/sql/Statement.html#executeBatch%28%29:

> If one of the commands in a batch update fails to execute properly,
> this method throws a BatchUpdateException, and a JDBC driver may or
> may not continue to process the remaining commands in the
> batch. However, the driver's behavior must be consistent with a
> particular DBMS, either always continuing to process commands or
> never continuing to process commands.

I will add a test case to BatchUpdateTest that shows the difference.