Loading multibyte data from Amazon S3 - Amazon Redshift
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Loading multibyte data from Amazon S3

If your data includes non-ASCII multibyte characters (such as Chinese or Cyrillic characters), you must load the data to VARCHAR columns. The VARCHAR data type supports four-byte UTF-8 characters, but the CHAR data type only accepts single-byte ASCII characters. You can't load five-byte or longer characters into Amazon Redshift tables. For more information, see Multibyte characters.