coalesce()

coalesce([...args]) returns its first argument that has a non-null value.

Returns

The first argument in args whose value is not null. If args contains only nullvalues, or is empty, then returns null.

Examples

# evaluates to 1
coalesce(null, 1)
# use either the requestId or request.id field, depending on which is available
coalesce(`requestId`, `request.id`)