create_foreign_constraint

Creates a foreign key constraint on a global or central table.

A foreign constraint can be defined on one or more columns; and multiple foreign key constraints can be defined on a table, but each foreign key constraint must cover a different combination of columns. 

Available in a network database and requires the star$define role.

Parameters:

Name	Optional	Type	Description
table$	Mandatory	Text	The table to create the foreign key constraint on.
columns$	Mandatory	Text	List of columns in the foreign key constraint.
reference$	Mandatory	Text	The table with a primary key to be referenced.

Examples:

SELECT create_foreign_constraint('mytable','cola','pktable');  Creates a foreign constraint on column 'cola' that references the primary key on table 'pktable'.

Tips:

• The columns parameter is a comma separated list of column names included in the constraint.
• The star$constraints view indicates which constraints already exist.