Re: "could not determine data type of parameter" with timestamp

So ps.setNull(1, Types.TIMESTAMP);

Doesn't work ?

Dave Cramer

davec(at)postgresintl(dot)com
www.postgresintl.com

On 5 December 2017 at 15:42, David G. Johnston <david(dot)g(dot)johnston(at)gmail(dot)com>
wrote:

> On Tue, Dec 5, 2017 at 8:11 AM, Rémi Aubel <remi(dot)aubel(at)gmail(dot)com> wrote:
>
>> Hello,
>>
>> I know my problem has already been answered in this list (
>> https://www.postgresql.org/message-id/CA%2BxsaB0EMDaNek0Oky
>> 9c17_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.
>>
>
> ​Not that I am aware.​
>
>
>> 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.
>>
>
> ​I'd probably perform the null test in Java and pass the true/false
> boolean result along to the query:
>
> SELECT * FROM my_table WHERE ?::bool;
> ps.setBoolean(1, tsvar = null); //my Java is rusty but you get the idea.
>
> That should work in any database.
>
> David J.
> ​
>