SUBTRACT Procedure

This procedure removes materialized views from a refresh group.

See Also: Oracle Database Advanced Replication for more information about refresh groups

Syntax

DBMS_REFRESH.SUBTRACT (
   name      IN    VARCHAR2,
   { list    IN    VARCHAR2,
   | tab     IN    DBMS_UTILITY.UNCL_ARRAY, }
   lax       IN    BOOLEAN := false);

Note: This procedure is overloaded. The list and tab parameters are mutually exclusive.

Parameters

Table 17-7 SUBTRACT Procedure Parameters  

Parameter	Description
name	Name of the refresh group from which you want to remove members.
list	Comma-delimited list of materialized views that you want to remove from the refresh group. (Synonyms are not supported.) These materialized views can be located in different schemas and have different master tables or master materialized views. However, all of the listed materialized views must be in your current database.
tab	Instead of a comma-delimited list, you can supply a PL/SQL index-by table of names of materialized views that you want to refresh using the datatype DBMS_UTILITY.UNCL_ARRAY. If the table contains the names of n materialized views, then the first materialized view should be in position 1 and the n + 1 position should be set to NULL.
lax	Set this to false if you want Oracle to generate an error message if the materialized view you are attempting to remove is not a member of the refresh group.