sa_make_object system procedure

Used in a SQL script, ensures that a skeletal instance of an object exists before executing an ALTER statement that provides the actual definition.

sa_make_object ( objtype, objname [, owner [, tabname ] )

object-type: ‘procedure’ | ‘function’ | ‘view’ | ‘trigger’

Resource authority required to create or modify database objects.

This procedure is particularly useful in scripts or command files that are run repeatedly to create or modify a database schema. A common problem in such scripts is that the first time they are run, a CREATE statement must be executed, but subsequent times an ALTER statement must be executed. This procedure avoids the necessity of querying the system tables to find out whether the object exists.

To use the procedure, follow it by an ALTER statement that contains the entire object definition.

You can also use the sa_make_object system procedure to add a skeleton Web service.

CALL sa_make_object( 'service','my_web_service' )

• The following statements ensure that a skeleton procedure definition is created, define the procedure, and grant permissions on it. A command file containing these instructions can be run repeatedly against a database without error.

  CALL sa_make_object( 'procedure','myproc' ); 
  ALTER PROCEDURE myproc( in p1 int, in p2 char(30) ) BEGIN
  		// ... 
  END; 
  GRANT EXECUTE ON myproc TO public;
  

• The following example uses the sa_make_object system procedure to add a skeleton Web service.

  CALL sa_make_object( 'service','my_web_service' )