Need help with expressions, column references, formulas and column renaming
All, Need some help in the following case.I have a name of a column in a string format.I need to create a new column with formula based on the old one. I do it like so:oldCol = "OldColumn";
Eval( Eval Expr( dt << New Column( "NewColumn", formula( As Column( Expr( oldCol ) ) ) ) ) );Then later in the script I need to rename the old column. I do it like this:Column(oldCol) << Set Name("NewOldColumn...