Returns a list of all field IDs in fileName and layoutName.
FieldIDs(fileName;layoutName)fileName - the name of an open database file (local or remote).
layoutName - the name of a layout or table in the specified database file.
text
FileMaker Pro 6.0 or earlier
Listed items are separated by carriage returns.
Related fields are returned as TableID::RelatedFieldID.
For example, 12::4, where 12 is the ID of the table and 4 is the ID of the related field.
FieldIDs ( "Customers" ; "" ) returns IDs of all unique fields in the default table of Customers.
FieldIDs ( "Customers" ; "Layout#5" ) returns IDs of all unique fields, including related fields, on Layout#5 in Customers.