24 июн. 2013 г. · 9.4 and older: PostgreSQL doesn't have any built-in UPSERT (or MERGE ) facility, and doing it efficiently in the face of concurrent use is very ...

25 сент. 2018 г. · New Postgres version 15 now support merge statement, You don't need to use alternate cte. Here is an example.

20 июл. 2022 г. · The MERGE statement as released in PostgreSQL 15 did end up supporting THEN DELETE , but it does not support WHEN NOT MATCHED BY SOURCE as ...

19 мар. 2018 г. · Postgres has no MERGE statement: https://www.postgresql.org/docs/current/static/sql-commands.html Use INSERT ON CONFLICT DO instead.

30 янв. 2024 г. · The statement will always be atomic in the sense that it either completes successfully or has no effect.

23 июн. 2021 г. · You are upserting/merging from one table/result-set into another table based on a key. Whether thats UPSERT , MERGE , INSERT INTO ... ON DUPLICATE KEY... INSERT ...

23 февр. 2024 г. · I discovered that Postgres has supported the MERGE statement since version 15, but it does not support the "BY TARGET" or "BY SOURCE" statement, throwing this ...

13 мая 2020 г. · Postgres does not support Merge. It does have a somewhat limited on conflict. It is limited to bypassing the statement or updating specified columns.

27 дек. 2021 г. · You should use unnest function to extract data and then add last_name column. After merging data you have to use aggregate to create an array.

7 мая 2015 г. · In Postgres 9.5+ you can merge JSONB like this: select json1 || json2; Or, if it's JSON, coerce to JSONB if necessary: select json1::jsonb || json2::jsonb