Cols.isPrimaryKey()

note

This article is about the isPrimaryKey() function of the Cols object.

Cols.isPrimaryKey()

Detects whether the first column in scope is a primary key column.

Returns a boolean.

Syntax

$.udb( *ds* ).cols( [columns] ).isPrimaryKey()

The required ds parameter is a data source selector.

The optional columns is a column selector. If omitted, all columns in scope are selected.

Example

let isKey = $.udb('EMP').cols('EMPLOYEE_ID').isPrimaryKey();