I can also now confirm that this was introduced in 1.4.200, when I 
downgrade to 1.4.199, this test works as expected.

Cheers,
Paul

On Monday, November 2, 2020 at 12:44:50 AM UTC+1 pwagland wrote:

> Hi all,
>
> We are trying to upgrade from H2 1.3.153 to 1.4.200, and are running into 
> the following NPE:
>
> org.h2.jdbc.JdbcSQLNonTransientException: General error: 
> "java.lang.NullPointerException"; SQL statement:
> select time_value, formatdatetime(time_value, 'HH:mm:ss.SSS') from 
> JDBCHelperTest where test_name = ? [50000-200]
> at org.h2.message.DbException.getJdbcSQLException(DbException.java:505)
> at org.h2.message.DbException.getJdbcSQLException(DbException.java:429)
> at org.h2.message.DbException.get(DbException.java:194)
> at org.h2.message.DbException.convert(DbException.java:347)
> at org.h2.command.Command.executeQuery(Command.java:212)
> at 
> org.h2.jdbc.JdbcPreparedStatement.executeQuery(JdbcPreparedStatement.java:114)
> at com.xxx.JDBCHelperTest.checkTime(JDBCHelperTest.java:428)
> at com.xxx.JDBCHelperTest.testBindByPosition_Time(JDBCHelperTest.java:1272)
>      <snip the boring bits of junit>
> Caused by: java.lang.NullPointerException
> at org.h2.value.Value.convertToTimestamp(Value.java:1146)
> at org.h2.value.Value.convertTo(Value.java:822)
> at org.h2.value.Value.convertTo(Value.java:737)
> at org.h2.value.Value.getTimestamp(Value.java:591)
> at org.h2.expression.function.Function.getValueWithArgs(Function.java:1530)
> at org.h2.expression.function.Function.getValue(Function.java:672)
> at 
> org.h2.command.dml.Select$LazyResultQueryFlat.fetchNextRow(Select.java:1851)
> at org.h2.result.LazyResult.hasNext(LazyResult.java:101)
> at org.h2.result.LazyResult.next(LazyResult.java:60)
> at org.h2.command.dml.Select.queryFlat(Select.java:737)
> at org.h2.command.dml.Select.queryWithoutCache(Select.java:844)
> at org.h2.command.dml.Query.queryWithoutCacheLazyCheck(Query.java:201)
> at org.h2.command.dml.Query.query(Query.java:489)
> at org.h2.command.dml.Query.query(Query.java:451)
> at org.h2.command.CommandContainer.query(CommandContainer.java:285)
> at org.h2.command.Command.executeQuery(Command.java:195)
> ... 25 more
>
> As far as I can tell, this would still fail on current master as well, 
> it's a little more difficult to test there though, as there are no 
> pre-built binaries that I could find…
>
> However, what happens is that `Value.getTimesstamp(TimeZone)` calls 
> `Value. convertTo(Value.*TIMESTAMP*))`, which in turn calls 
> `Value.convertTo(targetType, *null*, *null*, *false*, *null*)`.  That 
> third *null*, is `CastDataProvider provider`. This provider is `null`, 
> however when it is passed to `Value.convertToTimestamp(provider, 
> forComparison)`, that method assumes that *provider*, isn't null, and 
> thus we get the NPE.
>
> The SQL that we are passing in can be seen in the stack trace. I can't see 
> anything wrong with the query, nor can I see any obvious workaround. I am 
> hoping that someone here will be able to help me see what we have done 
> wrong, and how we can fix it without needing to wait for 2.0.202.
>
> Cheers,
> Paul
>

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