BUG #16714: INSERT ON CONFLICT DO UPDATE fails to infer constraint if it's not at top-level partition The following bug has been logged on the website: Bug reference: 16714 Logged by: Andy S Email address: [hidden email] PostgreSQL version: 11.2 Operating system: Gentoo Linux … PRIMARY Key − Uniquely identifies each row/record in a database table. Avoid naming a constraint directly when using ON CONFLICT DO UPDATE PostgreSQL 9.5 will have support for a feature that is popularly known as "UPSERT" - the ability to either insert or update a row according to whether an existing row with the same key exists. When checking constraints, PostgreSQL also checks rows that would normally not be visible to the current transaction. When doing upserts in PostgreSQL 9.5+ you must refer to the excluded data (that which failed to insert) by the alias excluded.Also, the on conflict option must refer to the key: (pk_b) rather than (b).Eg. The following are commonly used constraints available in PostgreSQL. Given the above, you may wonder if regular constraints are subject to the same problem. ... Postgresql 10 There is no unique or exclusion constraint matching the ON CONFLICT specification. I'm trying to use new Postgresql 9.5 upsert feature. It seems that the database cannot identify the unique constraint for (user_id, group_id). Added support for PostgreSQL ON CONFLICT .. ON CONSTRAINT .. ON CONSTRAINT .. lukaseder added a commit that referenced this issue Dec 18, 2017 But for some reason my query saying constraint doesn't exist (when it does). Because PostgreSQL can not infer it from the values, you need the index_predicate. Postgres complex insert or update with 2 unique constraints. Please check if it is defined correctly and try using the constraint name directly:... on conflict on constraint

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