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Optional calculations with columns

Sometimes a column (or columns) can be optional in source data. Here is an example that performs a calculation when an optional column exists in a source dataset and does nothing when it’s missing.

To see the change in behavior enable/disable the 2nd step in table “Source data” - it will add/remove an optional column.

optional-column-calculation.morph (3.6 KB)

Optional column exists:

Optional column is missing:

The example is simplified using the recently added action “Skip on condition” and the columnexists() function:
optional-column-calculation.morph (2.7 KB)

As with the previous example, enable/disable the 2nd action in the “Sample data” table to simulate an optional column.

The optional column is present:

The optional column is missing:

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