Some column description clarifications (#2536)

superset/connectors/druid/views.py

@@ -45,6 +45,9 @@ class DruidColumnInlineView(CompactCRUDMixin, SupersetModelView):  # noqa
         'max': _("Max"),
     }
     description_columns = {
+        'filterable': _(
+            "Whether this column is exposed in the `Filters` section "
+            "of the explore view."),
         'dimension_spec_json': utils.markdown(
             "this field can be used to specify  "
             "a `dimensionSpec` as documented [here]"
@@ -166,7 +169,18 @@ class DruidDatasourceModelView(SupersetModelView, DeleteMixin):  # noqa
             "https://daringfireball.net/projects/markdown/'>markdown</a>"),
         'fetch_values_from': _(
             "Time expression to use as a predicate when retrieving "
-            "distinct values to populate the filter component"),
+            "distinct values to populate the filter component. "
+            "Only applies when `Enable Filter Select` is on. If "
+            "you enter `7 days ago`, the distinct list of values in "
+            "the filter will be populated based on the distinct value over "
+            "the past week"),
+        'filter_select_enabled': _(
+            "Whether to populate the filter's dropdown in the explore "
+            "view's filter section with a list of distinct values fetched "
+            "from the backend on the fly"),
+        'default_endpoint': _(
+            "Redirects to this endpoint when clicking on the datasource "
+            "from the datasource list"),
     }
     base_filters = [['id', DatasourceFilter, lambda: []]]
     label_columns = {

superset/connectors/sqla/views.py

@@ -40,6 +40,9 @@ class TableColumnInlineView(CompactCRUDMixin, SupersetModelView):  # noqa
             "Whether to make this column available as a "
             "[Time Granularity] option, column has to be DATETIME or "
             "DATETIME-like"),
+        'filterable': _(
+            "Whether this column is exposed in the `Filters` section "
+            "of the explore view."),
         'type': _(
             "The data type that was inferred by the database. "
             "It may be necessary to input a type manually for "
@@ -163,8 +166,16 @@ class TableModelView(SupersetModelView, DeleteMixin):  # noqa
         'fetch_values_predicate': _(
             "Predicate applied when fetching distinct value to "
             "populate the filter control component. Supports "
-            "jinja template syntax."
+            "jinja template syntax. Applies only when "
+            "`Enable Filter Select` is on."
         ),
+        'default_endpoint': _(
+            "Redirects to this endpoint when clicking on the table "
+            "from the table list"),
+        'filter_select_enabled': _(
+            "Whether to populate the filter's dropdown in the explore "
+            "view's filter section with a list of distinct values fetched "
+            "from the backend on the fly"),
     }
     base_filters = [['id', DatasourceFilter, lambda: []]]
     label_columns = {
@@ -174,7 +185,9 @@ class TableModelView(SupersetModelView, DeleteMixin):  # noqa
         'changed_on_': _("Last Changed"),
         'filter_select_enabled': _("Enable Filter Select"),
         'schema': _("Schema"),
-        'default_endpoint': _("Default Endpoint"),
+        'default_endpoint': _(
+            "Redirects to this endpoint when clicking on the datasource "
+            "from the datasource list"),
         'offset': _("Offset"),
         'cache_timeout': _("Cache Timeout"),
     }