General Usage Notes

Teradata Vantageā„¢ Data Types and Literals

brand
Software
Teradata Vantage
prodname
Teradata Database
Teradata Vantage NewSQL Engine
vrm_release
16.20
category
Programming Reference
featnum
B035-1143-162K

If the source string (CHAR, VARCHAR, or CLOB) is longer than the target data type (CHAR, VARCHAR, or CLOB), excess characters are truncated.

Session Mode for INSERT or UPDATE Non-pad Characters Truncated to Store Character Values in a Table
ANSI Error is reported.
Teradata Error is not reported.

Pad characters are trimmed or appended, according to the following rules:

Source String Data Type Length Target Data Type Pad Characters
CHAR Longer than the target CLOB or VARCHAR Any trailing pad characters are trimmed.
CHAR, VARCHAR, or CLOB Shorter than the target CHAR Trailing pad characters are appended to the target.
CHAR All pad characters CLOB or VARCHAR Field is truncated to zero length.

Example: Character to Character Conversions

Following are examples of character to character conversions.

Character String String Length Character Description Conversion Result Converted Length
'HELLO' 5 CHAR(3) 'HEL', if session is in Teradata mode 3
Error, if session is in ANSI mode  
'HELLO' 5 CHAR(7) 'HELLO  ' 7
'HELLO' 5 VARCHAR(7) 'HELLO' 5
'HELLO  ' 7 VARCHAR(6) 'HELLO ' 6
'HELLO  ' 7 VARCHAR(3) 'HEL', if session is in Teradata mode 3
Error, if session is in ANSI mode