Split or Inverse expresion of Cocatenate? Help with Expressions

[yastaaa]

I have a column that is a Key. A Concatenate of two colums: CONCATENATE([Racing Date],": ",[Track]). So in F.E. 23/08/2021 : CHURCHILL DOWNS.

Is there any formula for a virtual column to extract the Date?

[Steve · Accepted solution]

This?

INDEX(SPLIT([column], ": "), 1)

Replace column with the name of the column containing the concatenated value.