Creating or loading tables

These functions have the following in common:

• They create or load a table from somewhere.
• They ensure that the table exists in the output and can therefore be referenced by formulas.
• They return the table name. This may be different from the original table name.

Any one of these functions may be used anywhere that a table name is expected (e.g. TableLookup or tableSumIfs), or it may be used on its own to simply ensure that the table exists in the output.