DECODE Function Syntax | Teradata Vantage - 17.10 - DECODE Function Syntax - Advanced SQL Engine - Teradata Database

Teradata Vantageā„¢ - 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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[TD_SYSFNLIB.] DECODE (expr, search_result [,...] default )

Syntax Elements

search_result
search, result,
TD_SYSFNLIB.
Name of the database where the function is located.
expr
A numeric or character expresssion.
  • If expr is equal to one of the search arguments, the function returns the corresponding result value.
  • If expr is not equal to any of the search arguments, the functions returns default, if the default value is specified.
  • If expr is NULL, the function returns the result of the first search parameter that is NULL.
search
A numeric or character expresssion.
DECODE supports 1-10 search arguments tied to an equal number of result arguments.
result
A numeric or character expresssion.
DECODE supports 1-10 result arguments tied to an equal number of search arguments.
default
A numeric or character expresssion.
If default is not specified and there are no matches, the function returns NULL.