Performs a macro.
For information about the embedded SQL EXEC statement, which is used to run macros from embedded SQL applications, see Teradata Vantage™ - SQL Stored Procedures and Embedded SQL , B035-1148 .
EXECUTE is a Teradata extension to the ANSI SQL:2011 standard.
You must have EXECUTE privilege on the macro. The creator or any owner of the macro can grant the EXECUTE privilege to another. In addition, the immediate owner of the macro (the database in which the macro resides) must have the necessary privileges on objects named in the request set that are contained in the macro.
For more information, see Teradata Vantage™ - SQL Data Definition Language Detailed Topics , B035-1184 and Teradata Vantage™ - Database Administration, B035-1093.
A data definition request in a macro is not fully resolved until the macro is submitted for execution. Unqualified references to database objects are resolved at that time using the default database of the executing user.
Because of this, object references in data definition statements should always be fully qualified (as databasename.tablename) in the body of the macro.
Rules for Performing Macros
- The number of commas must match the macro definition if you do not use the parameter_name syntax.
- Any value in the EXECUTE constant expression list form without a specified parameter name can be a constant or an expression involving constants. In this context, DATE, TIME, and USER are considered constants.
- If an error message is returned when a macro is executed, it can be caused by an SQL request in the macro.
- The number of parameters used in the calling sequence must be equal to the number of parameters defined.
- When, for example, two parameters are defined and used, if they are both null, the following requests are all valid unless defaults are specified in the macro definition:
EXECUTE macro_1 '(, 1); EXECUTE macro_1 (,); EXECUTE macro_1 (NULL, NULL);
Access Logging and Errors
Any syntactic or semantic error identified and reported by the SQL parser results in an error being returned to you without logging the request.