add meta for wide time series (#17)

Author: scottlepp

duck/duckdb.go

@@ -223,6 +223,14 @@ func resultsToFrame(name string, res string, f *sdk.Frame, frames []*sdk.Frame)
 		}
 		f.Fields = frame.Fields
 		f.Meta = frame.Meta
+		return nil
+	}
+
+	if kind == sdk.TimeSeriesTypeWide {
+		if f.Meta == nil {
+			f.Meta = &sdk.FrameMeta{}
+		}
+		f.Meta.Type = sdk.FrameTypeTimeSeriesWide
 	}
 
 	// TODO - appending to field names for now

duck/duckdb_test.go

@@ -284,6 +284,36 @@ func TestTimeSeries(t *testing.T) {
 	assert.Contains(t, txt, "Type: []time.Time")
 }
 
+func TestTimeSeriesWide(t *testing.T) {
+	db := NewInMemoryDB()
+
+	tt := "2024-02-23 09:01:54"
+	dd, err := dateparse.ParseAny(tt)
+	assert.Nil(t, err)
+
+	var values = []time.Time{dd}
+	timeField := data.NewField("time", nil, values)
+	valueField := data.NewField("value", nil, []*float64{new(float64)})
+
+	frame := data.NewFrame("foo", timeField, valueField)
+	frame.RefID = "foo"
+
+	frames := []*data.Frame{frame}
+
+	model := &data.Frame{}
+	err = db.QueryFramesInto("foo", "select * from foo", frames, model)
+	assert.Nil(t, err)
+
+	assert.Equal(t, data.FrameTypeTimeSeriesWide, model.Meta.Type)
+
+	assert.Equal(t, 1, model.Rows())
+	txt, err := model.StringTable(-1, -1)
+	assert.Nil(t, err)
+
+	fmt.Printf("GOT: %s", txt)
+	assert.Contains(t, txt, "Type: []*time.Time")
+}
+
 func TestLabels(t *testing.T) {
 	db := NewInMemoryDB()