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10.8. Multi-Source Models: Stored Procedures
A physical stored procedure requires the addition of a string in parameter matching the multi-source column name to specify which source the procedure is executed on. If the parameter is not present and defaults to a null value, then the procedure will be executed on each source. It is not possible to execute procedures that are required to return IN/OUT, OUT, or RETURN parameters values on more than 1 source.
Example 10.1. Example DDL
CREATE FOREIGN PROCEDURE PROC (arg1 IN STRING NOT NULL, arg2 IN STRING, SOURCE_NAME IN STRING)
Example 10.2. Example Calls Against A Single Source
CALL PROC(arg1=>'x', SOURCE_NAME=>'sourceA')
EXEC PROC('x', 'y', 'sourceB')
Example 10.3. Example Calls Against All Sources
CALL PROC(arg1=>'x')
EXEC PROC('x', 'y')
