Expressions: Sql expressions with Duckdb (#81666)

duckdb temp storage of dataframes using parquet and querying from sql expressions
---------

Co-authored-by: Ryan McKinley <ryantxu@gmail.com>

pkg/expr/mathexp/parse/node.go

@@ -405,6 +405,8 @@ const (
 	TypeVariantSet
 	// TypeNoData is a no data response without a known data type.
 	TypeNoData
+	// TypeTableData is a tabular data response.
+	TypeTableData
 )
 
 // String returns a string representation of the ReturnType.
@@ -422,6 +424,8 @@ func (f ReturnType) String() string {
 		return "variant"
 	case TypeNoData:
 		return "noData"
+	case TypeTableData:
+		return "tableData"
 	default:
 		return "unknown"
 	}

pkg/expr/mathexp/types.go

@@ -246,3 +246,48 @@ func (s NoData) New() NoData {
 func NewNoData() NoData {
 	return NoData{data.NewFrame("no data")}
 }
+
+// TableData is an untyped no data response.
+type TableData struct{ Frame *data.Frame }
+
+// Type returns the Value type and allows it to fulfill the Value interface.
+func (s TableData) Type() parse.ReturnType { return parse.TypeTableData }
+
+// Value returns the actual value allows it to fulfill the Value interface.
+func (s TableData) Value() any { return s }
+
+func (s TableData) GetLabels() data.Labels { return nil }
+
+func (s TableData) SetLabels(ls data.Labels) {}
+
+func (s TableData) GetMeta() any {
+	return s.Frame.Meta.Custom
+}
+
+func (s TableData) SetMeta(v any) {
+	m := s.Frame.Meta
+	if m == nil {
+		m = &data.FrameMeta{}
+		s.Frame.SetMeta(m)
+	}
+	m.Custom = v
+}
+
+func (s TableData) AddNotice(notice data.Notice) {
+	m := s.Frame.Meta
+	if m == nil {
+		m = &data.FrameMeta{}
+		s.Frame.SetMeta(m)
+	}
+	m.Notices = append(m.Notices, notice)
+}
+
+func (s TableData) AsDataFrame() *data.Frame { return s.Frame }
+
+func (s TableData) New() TableData {
+	return NewTableData()
+}
+
+func NewTableData() TableData {
+	return TableData{data.NewFrame("")}
+}