Alter column data type in Amazon Redshift

Question

How to alter column data type in Amazon Redshift database?

I am not able to alter the column data type in Redshift; is there any way to modify the data type in Amazo

Answer 1

to avoid the schema change mentioned by Tomasz:

BEGIN TRANSACTION;

ALTER TABLE  RENAME TO _OLD;
CREATE TABLE  (  );
INSERT INTO  ()
SELECT 
FROM _OLD;
DROP TABLE _OLD;

END TRANSACTION;