ReadonlydataReadonlyfieldThe fieldId of the field in the column. In summary data, this includes the aggregation. The fieldId is not stable across replacing data sources. For example after replacing the data source [Clipboard_20210305T164000].[sum:Sales:qk] could become [federated.12usuoq1171o1b1ebdyh60fjnev1].[sum:Sales:qk].
ReadonlyfieldReadonlyindexReadonlyis
Returns
The data type of the column. Possible values are float, integer, string, boolean, date, datetime and spatial