Re: Insert works but fails for merge

On 8/10/24 05:07, yudhi s wrote:
>
>

> Thank You Adrian and David.
>
> Even converting the merge avoiding the WITH clause/CTE as below , is
> still making it fail with the same error. So it seems , only
> direct "insert into values" query can be auto converted/casted but not
> the other queries.
>
> In our case , we were using this merge query in application code(in
> Java) as a framework to dynamically take these values as bind values and
> do the merge of input data/message. But it seems we have to now cast
> each and every field which we get from the incoming message to make
> this merge work in a correct way. I am wondering if the only way now is
> to get the data types from information_schema.columns and then use the
> cast function to write the values of the merge query dynamically
> casted/converted for each of the fields in the application code. Please
> correct me if my understanding is wrong.

Why not use INSERT ... ON CONFLICT instead of MERGE?

>
> MERGE INTO tab1 AS target
> USING (VALUES ('5efd4c91-ef93-4477-840c-a723ae212d99', 123,
> '2024-08-09T11:33:49.402585600Z','2024-08-09T11:33:49.402585600Z')) AS
> source(id, mid,txn_timestamp, cre_ts)
> ON target.id <http://target.id> = source.id <http://source.id>
> WHEN MATCHED THEN
> UPDATE SET mid  = source.mid
> WHEN NOT MATCHED THEN
> INSERT (id, mid, txn_timestamp, cre_ts)
>     VALUES (source.id <http://source.id>,source.mid,
>  source.txn_timestamp, source.cre_ts);

--
Adrian Klaver
adrian(dot)klaver(at)aklaver(dot)com