29 мар. 2019 г. · I would like to alter table in Amazon Redshift, and put two columns as a composite Primary key. I tried this code snippet: ALTER TABLE tableNameHere ADD ...

9 мая 2014 г. · I have a table for which I want to define a composite primary key with two columns in redshift. I am having some trouble with create table syntax.

18 сент. 2017 г. · I am trying to replicate a table using CTAS clause in redshift by additionally specifying a primary key to the table. Tried below syntax but no luck.

10 сент. 2021 г. · Yes, both statements are correct - Redshift does not enforce uniqueness and identifying primary / foreign keys can speed up queries.

6 апр. 2018 г. · In Redshift, a primary key MAY be useful if you need it for queries, for example referring to the primary key when joining to another table.

8 февр. 2016 г. · I'm using postgresql 8.0.2 with amazon redshift and I'm trying to set up a INSERT command that also returns the PRIMARY KEY.

10 нояб. 2021 г. · Tables created with the LIKE option don't inherit primary and foreign key constraints. Distribution style, sort keys, BACKUP, and NULL properties are inherited ...

1 июн. 2016 г. · Here's one way to get a table's primary key: SELECT schemaname, tablename, replace(substr(ddl, POSITION('(' IN ddl)+1 ),')','') primary_key FROM admin.v_ ...

9 сент. 2019 г. · I try to do a bulk insert value in a table from a temp table. However I only want to insert the values where a compound of values (primary key) not exist in ...

19 авг. 2015 г. · I'm trying to create indexes in Amazon Redshift but I received an error create index on session_log(UserId); UserId is an integer field.