How to know if the duplicate values present in the given expression…?

By | November 27, 2014

Function name: uniis used to verify if there are duplicated values in a series of variable or numeric expressions, alphanumeric expressions or dates. uni returns the rank of the first value equal to a previous value from the list, that is to say:

  • If the first and the second are identical, uni returns 2
  • If the first and the third (or the second and the third) are identical, uni returns 3.
  • If no value is duplicated, uni returns 0.

New Stuff: Sleep Command Feature in 4GL.

Syntax:uni (list_exprg)

list_exprg: List of generalised expressions separated by the character ‘,’.

Refer to the below snippet of code for the better clarification.

How to know if the duplicate values present in the given expression1

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