tokenHash()

`tokenHash()`

Calculates a "structure hash" which is equal for similarly structured input.

Parameter	Type	Required	Default	Description
`as`	string	false	`_tokenHash`	The name of output field, defaults to `_tokenHash`.
`field`	string	true		The name of the field to hash. ^[a]
^[a]If an argument name is not given, `field` is the default argument.

Replace the value in the ssn field with the hash of the existing value, also replacing it in @rawstring

logscale

tokenHash(ssn)