Consider the following rules and guidelines when you read directly from an Amazon Redshift source:
The order of data written to the target in the direct read mode is different from the order of data written after Amazon S3 staging.
The precision values are rounded-off to the 6
th
precision for real data types and to the 14
th
precision for double data types.
NULL values in char and varchar data types are written to the target without quotes.
Trailing spaces in the char data type columns appear with trailing spaces in the target. In comparison, the trailing spaces are truncated when you set the source with staging mode.