create_unique_constraint

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

A unique constraint can be defined on one or more columns; and multiple unique constraints can be defined on a table, but each unique 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 primary key constraint on.
columns$	Mandatory	Text	List of columns in the primary key constraint.

Examples:

SELECT create_unique_constraint('mytable','cola'); -- creates a unique constraint on one column.

SELECT create_unique_constraint('mytable','cola,colb'); -- creates a unique constraint on two columns.

Tips:

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