NUMBER - Advanced SQL Engine - Teradata Database

SQL External Routine Programming

Product
Advanced SQL Engine
Teradata Database
Release Number
17.05
17.00
Published
June 2020
Language
English (United States)
Last Update
2021-01-24
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dita:id
B035-1147
lifecycle
previous
Product Category
Teradata Vantage™

C Data Type Definition

typedef struct NUMBER
{
   int length;
   short scale;
   BYTE mantissa[NUMBER_MAX_MANTISSA_SIZE];
} NUMBER;

Usage

The layout of NUMBER is the same as that of the NUMBER data type when transferred to or from the client: a two byte scale followed by the significand. The maximum length is 19.

Here is an example using NUMBER in a UDF definition and C function declaration.

SQL Function Definition Equivalent C Function Declaration
CREATE FUNCTION F1(
  A NUMBER(30,2) )
RETURNS NUMBER
 ...;
void f1( NUMBER *a,
         NUMBER *result,
   ... )
{  ... }