如何将 SUPER 列添加到现有 AWS Redshift 表？

Question

GOAL

• I would like to add a Redshift SUPER column to and existing redshift table.
• I need this to store JSON data there

CODE

This is how Normally I would add a new column.

ALTER TABLE products 
ADD COLUMN created_at NOT NULL;

1. Tried

CREATE TABLE temp_test_persons (
    PersonID int,
    LastName varchar(255),
    FirstName varchar(255),
    Address varchar(255),
    City varchar(255)
);

ALTER TABLE temp_test_persons ADD COLUMN newSuperColumn SUPER NOT NULL; 

Error running query: ALTER TABLE ADD COLUMN defined as NOT NULL must have a non-null default expression

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Answer 1

ALTER TABLE temp_test_persons 
ADD COLUMN newSuperColumn SUPER;

Answer 2

The solution is to set a default value for the column. Then you can define the column as NotNull. Like this

ALTER TABLE temp_test_persons 
ADD COLUMN newSuperColumn SUPER NOT NULL 
DEFAULT '';