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Trifacta Dataprep


On January 27, 2021, Google is changing the required permissions for attaching IAM roles to service accounts. If you are using IAM roles for your Google service accounts, please see Changes to User Management.


Identifies the expression that is applied by the transform. The value parameter can be one of the following types:

  • test predicates that evaluate to Boolean values (value: myAge == '30' yields a true or false value), or
  • computational expressions ( value: abs(pow(myCol,3)) ).

The expected type of value expression is determined by the transform type. Each type of expression can contain combinations of the following:

  • literal values:  value: 'Hello, world'
  • column references:  value: amountOwed * 10
  • functions:   value: left(myString, 4)

  • combinations:  value: abs(pow(myCol,3))

The types of any generated values are re-inferred by the platform.

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