C Scalar Function Using TD_ANYTYPE Parameters | UFC Code Examples | Vantage - C Scalar Function Using TD_ANYTYPE Parameters - Analytics Database - Teradata Vantage

SQL External Routine Programming

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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iiv1628111441820.ditamap
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dita:id
B035-1147
lifecycle
latest
Product Category
Teradata Vantageā„¢
This example shows the C code for a simple scalar function that uses TD_ANYTYPE input and result parameters. This function returns the ASCII numeric value of the first character of the input string. It accepts input strings with the following data types:
  • CHARACTER
  • VARCHAR
  • CLOB
  • UDT with a CHARACTER, VARCHAR, or CLOB attribute.
  • ARRAY with an element type of CHARACTER or VARCHAR.

The function accepts the character set associated with the input string. If no character set is explicitly specified, the default character set is used.

The return type supported by this function is BYTEINT, SMALLINT, or INTEGER. To specify the desired return type for the function, use the RETURNS data type or RETURNS STYLE column expression clause when invoking the function.