NVARCHAR in SQLServer to VARCHAR in AWS Redshift

Question

I am trying to move a table from SQL server to AWS Redshift. While trying to move NVARCHAR fields, I read that Redshift converts NVARCHAR to VARCHAR internally. So, a NVARCHAR(100) in SQL Server will be equivalent to VARCHAR(100) or Varchar(200) in Redshift ? If I want to define the NVARCHAR fields from SQLServer directly as VARCHAR in Redshift, do I need to double the length of fields?

Answer 1

Got the answer from aws.

NCHAR and NVARCHAR types are converted to CHAR and VARCHAR types, respectively, and are stored in the specified number of bytes. A VARCHAR(120) column consists of a maximum of 120 single-byte characters, 60 two-byte characters, 40 three-byte characters, or 30 four-byte characters. So, if I am storing double-byte characaters in SQL using NVARCHAR(x), I can define VARCHAR(2x) in Redshift to have the same storage behavior. Following is the link for further reference: http://docs.aws.amazon.com/redshift/latest/dg/r_Character_types.html