postgresql 9.5.1 構文 insert into テーブル名 values ('値1', '値2', ...） on conflict on constraint 制約名 do update set カラム1='値', カラム2='値', ...; insertとupdateでon conflict on constraintを挟まれています。 1. 13. When checking constraints, PostgreSQL also checks rows that would normally not be visible to the current transaction. ON CONFLICT refers to constraints that can either be specified using a inference clause (by specifying the columns of a unique constraint) or by naming a unique or exclusion constraint. FOREIGN Key − Constrains data based on columns in other tables. Given the above, you may wonder if regular constraints are subject to the same problem. 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. 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 … O(2^N) permutations. Please check if it is defined correctly and try using the constraint name directly:... on conflict on constraint What Aisle Is Pesto In,
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