Unable to use Field Names or Calculations as Patterns in Regular Expressions | Tableau Software

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Unable to use Field Names or Calculations as Patterns in Regular Expressions

Published: 18 Jun 2015
Last Modified Date: 07 Mar 2017

Issue

When attempting to write a calculated field using Regular Expressions or attempting to replace a constant with a field name or formula referencing a field name, it provides no error in the calculation editor, but produces an error similar to Tableau Data Engine Error: 4: PrimitiveExp::MakePrimitive: map_rcontains_usr4_col_usr4_col

Environment

Tableau Desktop 9.0.2
Tableau Desktop 10.2
Tableau Data Engine

Cause

The ability to use Field Names or Calculations as Patterns in Regular Expressions is not currently built into Tableau Desktop.

Additional Information

Online Help Additional Functions states, "For Tableau data extracts, the pattern must be a constant."

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