OverviewApi: skip tables with no overlays in result

2016-01-21 13:35:56 +01:00
parent 532654eea8
commit 62cc53228c
1 changed files with 7 additions and 5 deletions
@@ -33,12 +33,14 @@ OverviewsApi.prototype.getOverviewsMetadata = function (username, sql, callback)
                            done(new Error('could not get overviews metadata: ' + msg));
                            return;
                        }
-                        var table_metadata = {};
-                        for ( var i=0; i<rows.length; ++i ) {
-                          var row = rows[i];
-                          table_metadata[row.z] = { table: row.overview_table };
+                        if ( rows.length > 0 ) {
+                          var table_metadata = {};
+                          for ( var i=0; i<rows.length; ++i ) {
+                            var row = rows[i];
+                            table_metadata[row.z] = { table: row.overview_table };
+                          }
+                          metadata[tableName] = table_metadata;
                        }
-                        metadata[tableName] = table_metadata;
                        done(null);
                    });
                });