When working with big data, it can be very helpful to have access to comprehensive column-level descriptions.
The following steps demonstrate how to add description to a column of a dataset, as a 'comment'. We are using the column iso_cc
(the ISO-compliant country code) in the dataset World Life Expectancy [data source samples.world_life_expectancy].
On the main navigation bar, click Data.
The Data view appears, open on the Datasets tab.
In the Datasets area, select World Life Expectancy (samples.world_life_expectancy)
.
In the Dataset Detail menu, select Attributes.
In the Attributes area, select Edit Attributes.
Under Measures, find the field iso_cc
, and click the down arrow on its right side.
From the menu, select Edit Attributes.
The Edit Table Column Properties window modal appears.
Under Column Comment, add the following text:
ISO 3166 Country Code Standard, Numeric, described in http://www.iso.org/iso/country_codes. Mappings are at https://www.iso.org/obp/ui/#search.
Click Apply.
Under Dataset: World Life Expectancy, click Save.
Click Show Comments.
Notice that the comment appears with the field iso-cc
.
To hide column comments, click Hide Comments.