15.10 - LEFT - Teradata Database

Teradata Database SQL Functions, Operators, Expressions, and Predicates

prodname
Teradata Database
vrm_release
15.10
created_date
March 2017
category
Programming Reference
featnum
B035-1145-151K

Purpose

Truncates in input string to a specified number of characters.

The LEFT function can be called with the 'LEFT' or 'TD_LEFT' alias names.

The arguments include two parameters:

  • First Parameter

    The input string that the substring is created from. CHAR, VARCHAR, and CLOB are supported, but other types must be explicitly cast. The input can be null or an empty string.

  • Second Parameter

    A positive integer specifying the number of characters desired from the left side of the string. If the number of character exceeds the number of characters in the original string, the original string is returned.

Syntax



The following character sets are supported with the LEFT function:
  • Unicode
  • Latin
  • Kanji SJIS
  • Graphic