17.10 - Length Includes Trailing Zeros - Advanced SQL Engine - Teradata Database

Teradata Vantage™ - SQL Functions, Expressions, and Predicates

Product
Advanced SQL Engine
Teradata Database
Release Number
17.10
Published
July 2021
Language
English (United States)
Last Update
2021-07-28
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Because trailing double zero bytes are considered bytes, the length of the value in a fixed length column is always equal to the length defined for the column.

The length of the value in a variable length column is always equal to the number of bytes, including any trailing double zero bytes, contained in that value.

If you do not want trailing blanks included in the byte count for a data value, use the TRIM function on the argument to BYTES. For example:

   SELECT BYTES( TRIM( TRAILING FROM byte_col ) ) FROM table1;