extensibility

Content related to UDFs etc.
Great Circle Distance Calculation UDF

Version: - Created: 12 Jun 2008

This UDF implements the great circle distance algorithm to determine the distance in miles between two points expressed in longitude and latitude. This distribution contains full source code, REPLACE FUNCTION SQL, a test suite and documentation.

UDF Packaging for Teradata 12.0

Version: - Created: 02 Mar 2008

The self extractable file includes the lobload application to load UDF's, SP's etc. into Teradata as part of installation.

Sample UDFs for String Searching

Version: - Created: 11 Sep 2007

Eight UDFs that search VARCHAR and CLOB string sources to see if they contain VARCHAR or CLOB string sets. Four of the UDFs are overloaded (named the same) to return the result in the form of VARCHAR or CLOB string while the other four UDFs are overloaded to return an INTEGER index into the string source if a match is found.

Edit Distance and N-Gram string UDFs

Version: - Created: 27 Jan 2005

This package contains two string-related UDFs. The Edit Distance function returns the minimum number of edit operations required to transform string1 into string2. The N-Gram matching function returns the number of n-gram matches between two strings.

Is_numeric() UDF

Version: 1.0 - Created: 27 Jan 2005

Is_numeric() UDF checks a field to see if it converts to a Teradata numeric value. one use would be for the ETL process to use the UDF to check incoming data that's destined for DECIMAL and INTEGER columns.