Display all columns if none are specified. (#2077)

* Display all columns if none are specified.

* Update models.py

* Do not use column for the time series.

* Update models.py

* Update config.py

superset/config.py

@@ -30,6 +30,7 @@ with open(PACKAGE_FILE) as package_file:
     VERSION_STRING = json.load(package_file)['version']
 
 ROW_LIMIT = 50000
+VIZ_ROW_LIMIT = 10000
 SUPERSET_WORKERS = 2
 
 SUPERSET_WEBSERVER_ADDRESS = '0.0.0.0'

superset/forms.py

@@ -564,7 +564,7 @@ class FormFactory(object):
             }),
             'row_limit': (FreeFormSelectField, {
                 "label": _('Row limit'),
-                "default": config.get("ROW_LIMIT"),
+                "default": config.get("VIZ_ROW_LIMIT"),
                 "choices": self.choicify(
                     [10, 50, 100, 250, 500, 1000, 5000, 10000, 50000])
             }),

superset/models.py

@@ -1320,6 +1320,12 @@ class SqlaTable(Model, Queryable, AuditMixinNullable, ImportMixin):
             for s in columns:
                 select_exprs.append(cols[s].sqla_col)
             metrics_exprs = []
+        elif not is_timeseries:
+            # use all columns if none were specified
+            for col_obj in cols.values():
+                select_exprs.append(col_obj.sqla_col)
+                metrics_exprs = []
+            row_limit = row_limit or 100
 
         if granularity:
 

superset/viz.py

@@ -1514,7 +1514,8 @@ class HistogramViz(BaseViz):
     def query_obj(self):
         """Returns the query object for this visualization"""
         d = super(HistogramViz, self).query_obj()
-        d['row_limit'] = self.form_data.get('row_limit', int(config.get('ROW_LIMIT')))
+        d['row_limit'] = self.form_data.get(
+            'row_limit', int(config.get('VIZ_ROW_LIMIT')))
         numeric_column = self.form_data.get('all_columns_x')
         if numeric_column is None:
             raise Exception("Must have one numeric column specified")