16.20 - Example: Using TRIM Functions - Advanced SQL Engine - Teradata Database

Teradata Vantage™ - SQL Functions, Expressions, and Predicates
Product
Advanced SQL Engine
Teradata Database
Release Number
16.20
Published
March 2019
Language
English (United States)
Last Update
2020-03-25
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The following table illustrates several more complicated TRIM functions.

Function Result
SELECT TRIM(LEADING 'a' FROM 'aaabcd'); 'bcd'
CREATE TABLE t2

  (i1 INTEGER, c1 CHAR(6), c2 CHAR(1));

INSERT t2 (1, 'aaabcd', 'a');

SELECT TRIM(LEADING c2 FROM c1) FROM t2;

 'bcd'
CREATE TABLE t3

  (i1 INTEGER, c1 CHAR(6) CHAR SET UNICODE);

INSERT t3 (1, _Unicode '006100610061006200630064'XC);

SELECT TRIM(LEADING _Unicode '0061'XC FROM t3.c1);

 'bcd'
SELECT TRIM(_Unicode 'ΔΔ abc ΔΔΔ '); 'abc '
SELECT TRIM(_Unicode 'ΔΔ abc ΔΔ Δ '); 'abc ΔΔ '

Δ (GRAPHIC pad) is not removed.
CREATE TABLE t1

  (c1 CHARACTER(6) CHARACTER SET GRAPHIC);

INSERT t1 (_Graphic 'abc ΔΔ ');

SELECT TRIM(c1) from t1;

 'abc '

Δ (GRAPHIC pad) is removed because the operand of the TRIM function is of type GRAPHIC.