Allow Dynamic Input to read in files with different schemas that have the same fields

[MichaelMains]

Dynamic Input is a fantastic tool when it works.  Today I tried to use it to bring in 200 Excel files.  The files were all of the same report and they all have the same fields. Still, I got back many errors saying that certain files have "a different schema than the 1st file."  I got this error because in some of my files, a whole column was filled with null data.  So instead of seeing these columns as V_Strings, Alteryx interpreted these blank columns as having a Double datatype.  

It would be nice if Alteryx could check that this is the case and simply cast the empty column as a V_String to match the previous files.  Maybe make it an option and just have Alteryx give a warning if it has to do this..

An even simpler option would be to add the ability to bring in all columns as strings.  

Instead, the current solution (without relying on outside macros) is to tick the checkbox in the Dynamic Input tool that says "First Row Contains Data."  This then puts all of the field titles into the data 200 times. This makes it work because all of the columns are now interpreted as strings.  Then a Dynamic Rename is used to bring the first row up to rename the columns.  A Filter is used to remove the other 199 rows that just contained copies of the field names.  Then it's time to clean up all of the fields' datatypes.  (And this workaround assumes that all of the field names contain at least one non-numeric character. Otherwise the field gets read as Double and you're back at square one.)