Schema: Remove key from root DataQuery type (#64467)

pkg/tsdb/loki/kinds/dataquery/types_dataquery_gen.go

@@ -54,14 +54,13 @@ type LokiDataQuery struct {
 	Expr string `json:"expr"`
 
 	// Hide true if query is disabled (ie should not be returned to the dashboard)
+	// Note this does not always imply that the query should not be executed since
+	// the results from a hidden query may be used as the input to other queries (SSE etc)
 	Hide *bool `json:"hide,omitempty"`
 
 	// @deprecated, now use queryType.
 	Instant *bool `json:"instant,omitempty"`
 
-	// Unique, guid like, string used in explore mode
-	Key *string `json:"key,omitempty"`
-
 	// Used to override the name of the series.
 	LegendFormat *string `json:"legendFormat,omitempty"`
 
@@ -75,7 +74,9 @@ type LokiDataQuery struct {
 	// @deprecated, now use queryType.
 	Range *bool `json:"range,omitempty"`
 
-	// A - Z
+	// A unique identifier for the query within the list of targets.
+	// In server side expressions, the refId is used as a variable name to identify results.
+	// By default, the UI will assign A->Z; however setting meaningful names may be useful.
 	RefId string `json:"refId"`
 
 	// Used to scale the interval value.