"could not determine data type of parameter" with timestamp - Mailing list pgsql-jdbc

I know my problem has already been answered in this list (https://www.postgresql.org/message-id/CA%2BxsaB0EMDaNek0Oky9c17_8UX3-epWVP11%2BvTNgrAPoY2s9FA%40mail.gmail.com), but it was a long time ago and I would like to know if any other solution exists now.

I need to execute this PreparedStatement:

select * from my_table where ? is null

with a bound parameter of type Timestamp.

With this form, the driver (version 42.1.4) raises this exception:

Note: I have the same exception if the bound parameter is null. The PreparedStatement should result in

select * from my_table where null is null

which is correct SQL.

The solution given 4 years ago was to explicitly cast the parameter as a timestamp (select * from my_table where ?::timestamp is null).

But this workaround is not really useful for me, because my application uses generated (dynamic) queries and targets multiple database types (not only PosgreSQL). So, when I know the targeted database, I do not know my parameter types anymore.

Any suggestion?

Thanks in advance.

Rémi.