相对于普通INSERT语法,覆盖写主要增加了ON CONFLICT子句,该子句分为两部分,分别是: conflict_target,用于指定在哪些列上有冲突。conflict_target在conflict_action为DO NOTHING时可省略,在conflict_action为DO UPDATE时,需要指定一个列表,指定主键列的列表或Unique Index列的列表 conflict_action,用于指定冲突后需要执行的...
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ON CONFLICT DO UPDATE保证原子INSERT或UPDATE结果;如果没有独立的错误，即使在高并发的情况下，也会保证...
INSERT INTO users (email, password) VALUES ('test@example.com', 'password123') ON CONFLICT (email) DO NOTHING; 这个语句将忽略与现有“email”值重复的行,不会出现错误。 更新冲突的行 如果你想在插入数据时更新冲突的行,而不是忽略它们,则可以使用 ON CONFLICT DO UPDATE。
从documentation：ON CONFLICT DO UPDATE保证原子INSERT或UPDATE结果;如果没有独立的错误，即使在高并发的...
a b c 1 b1 c1 2 b2 c2 3 b3 c3 此时如果执行下面的sql就会报错 INSERT IN...
postgres=#insertintousers (user_handle, first_name, last_name, email) values(uuid_generate_v4(),'Lucie','Jones','Lucie-Jones@gmail.com')on conflict do nothing: We can also choose toupdateinstead of doingnothing: postgres=#insertintousersvalues(uuid_generate_v4(),'Lucie','Hawkins','Lucie...
INSERT INTO [...] ON CONFLICT does not find unique/primary key constraint for a referenced conflict target in an attached Postgres DB. Hence, the Upsert does not occur. To Reproduce Running INSTALL postgres; LOAD postgres; ATTACH 'host=localhost user=postgres password=postgres' AS pg (TYPE po...
error:•Couldn'tmatch expectedtype‘DatabaseEntitybe1 db0 (TableEntitytable)’with actualtype‘PgInsertOnConflictPgInsertOnConflictSyntaxAddressT->Maybe(AddressT(QExprPgExpressionSyntaxbeam-postgres-0.1.0.0:Database.Beam.Postgres.Syntax.PostgresInaccessible)->a0)->PgInsertReturning(QExprToIdentitya0)’...
example. That hardly ever happens, even with features that we think of as high impact major features. So evidently users really value these kinds of quality of life improvements. -- Peter Geoghegan Re: doc: Clarify what "excluded" represents for INSERT ON CONFLICT ...