C Constant/Variable Mode Table Function | UFC Code Examples | Teradata Vantage - C Constant/Variable Mode Table Function - Advanced SQL Engine - Teradata Database

SQL External Routine Programming

Product
Advanced SQL Engine
Teradata Database
Release Number
17.10
Published
July 2021
Language
English (United States)
Last Update
2021-07-27
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B035-1147
lifecycle
previous
Product Category
Teradata Vantageā„¢

This example shows the C code for a table function that supports both TBL_MODE_CONST and the TBL_MODE_VARY modes. The TBL_MODE_CONST is very simple in that any one AMP will extract the data out of the text string that is passed in.

This example extracts some data out of a 'raw' text field to generate a bunch of rows. The raw data is in this format:

store_number,entries:entry[;...]
entry
customer_ID,item_ID
store_number
Number that identifies the store that sold the items to the customers.
entries
Number of items sold.
customer_ID
Customer identifier.
item_ID
Item identifier.