Search Postgresql Archives

Re: Insert works but fails for merge

[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

 



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.klaver@xxxxxxxxxxx






[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]
[Index of Archives]     [Postgresql Jobs]     [Postgresql Admin]     [Postgresql Performance]     [Linux Clusters]     [PHP Home]     [PHP on Windows]     [Kernel Newbies]     [PHP Classes]     [PHP Databases]     [Postgresql & PHP]     [Yosemite]

  Powered by Linux