Differences Between CREATE FUNCTION and REPLACE FUNCTION - Analytics Database - Teradata Vantage

SQL Data Definition Language Detailed Topics

Deployment
VantageCloud
VantageCore
Edition
Enterprise
IntelliFlex
VMware
Product
Analytics Database
Teradata Vantage
Release Number
17.20
Published
June 2022
Language
English (United States)
Last Update
2023-07-11
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B035-1184
lifecycle
latest
Product Category
Teradata Vantage™

A function can be created or replaced using the same syntax except for the keywords CREATE and REPLACE.

If you specify CREATE, the function must not exist.

If you specify REPLACE, you can either create a new function or replace an existing function with the following restriction: if the function to be replaced was originally created with a specific function name, then that specific function name must be used for the REPLACE FUNCTION statement.

The advantage to using REPLACE is that you can avoid having to grant the EXECUTE privilege again to all users who already had that privilege on the function.