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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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