Example: Creating a Procedure Using PARAMETER STYLE SQL - Teradata Vantage - Analytics Database

The following CREATE PROCEDURE request installs the external SQL procedure named GetRegionXSP on the Teradata platform:

   CREATE PROCEDURE GetRegionXSP
     (INOUT region VARCHAR(64))
   LANGUAGE C
   NO SQL
   EXTERNAL NAME 'CS!getregion!xspsrc/getregion.c!F!xsp_getregion'
   PARAMETER STYLE SQL;

The only difference between this definition and the definition provided in Example: Creating a Procedure Using PARAMETER STYLE TD_GENERALis the PARAMETER STYLE declaration: this procedure uses parameter style SQL.

The following excerpt shows the fragment of the C procedure code that declares a parameter style of SQL:

   /*****  C source file name: getregion.c  *****/
   
   #define  SQL_TEXT Latin_Text
   #include "sqltypes_td.h"
   #include <string.h>
   
   void xsp_getregion( VARCHAR_LATIN *region,
                       int           *region_isnull,
                       char           sqlstate[6],
                       SQL_TEXT       extname[129],
                       SQL_TEXT       specific_name[129],
                       SQL_TEXT       error_message[257] )
   {
        …
   }

See Teradata Vantage™ - SQL External Routine Programming, B035-1147 for details about coding external SQL procedures.