InfluxDB: Fix aliasing with $measurement or $m on backend mode (#76917)

* better interpolation $measurement aliasing

* unit tests

pkg/tsdb/influxdb/influxql/response_parser.go

@@ -220,7 +220,7 @@ func formatFrameName(row models.Row, column string, query models.Query, frameNam
 		aliasFormat = strings.Replace(aliasFormat, "$", "", 1)
 
 		if aliasFormat == "m" || aliasFormat == "measurement" {
-			return []byte(query.Measurement)
+			return []byte(row.Name)
 		}
 		if aliasFormat == "col" {
 			return []byte(column)

pkg/tsdb/influxdb/influxql/response_parser_test.go

@@ -319,6 +319,48 @@ func TestInfluxdbResponseParser(t *testing.T) {
 		}
 	})
 
+	t.Run("Influxdb response parser with $measurement alias when multiple measurement in response", func(t *testing.T) {
+		response := `
+		{
+			"results": [
+				{
+					"series": [
+						{
+							"name": "cpu.upc",
+							"columns": ["time","mean"],
+							"tags": {
+								"datacenter": "America",
+								"dc.region.name": "Northeast",
+								"cluster-name":   "Cluster"
+							},
+							"values": [
+								[111,222]
+							]
+						},
+						{
+							"name": "logins.count",
+							"columns": ["time","mean"],
+							"tags": {
+								"datacenter": "America",
+								"dc.region.name": "Northeast",
+								"cluster-name":   "Cluster"
+							},
+							"values": [
+								[111,222]
+							]
+						}
+					]
+				}
+			]
+		}
+		`
+
+		query := models.Query{Alias: "alias $measurement"}
+		result := ResponseParse(prepare(response), 200, generateQuery(query))
+		assert.Equal(t, "alias cpu.upc", result.Frames[0].Name)
+		assert.Equal(t, "alias logins.count", result.Frames[1].Name)
+	})
+
 	t.Run("Influxdb response parser with alias", func(t *testing.T) {
 		response := `
 		{
@@ -369,7 +411,7 @@ func TestInfluxdbResponseParser(t *testing.T) {
 			query = models.Query{Alias: "alias $m $measurement", Measurement: "10m"}
 			result = ResponseParse(prepare(response), 200, generateQuery(query))
 
-			name := "alias 10m 10m"
+			name := "alias cpu.upc cpu.upc"
 			testFrame.Name = name
 			testFrame.Fields[1].Config.DisplayNameFromDS = name
 			if diff := cmp.Diff(testFrame, result.Frames[0], data.FrameTestCompareOptions()...); diff != "" {
@@ -477,7 +519,7 @@ func TestInfluxdbResponseParser(t *testing.T) {
 
 			query = models.Query{Alias: "alias [[m]] [[measurement]]", Measurement: "10m"}
 			result = ResponseParse(prepare(response), 200, generateQuery(query))
-			name = "alias 10m 10m"
+			name = "alias cpu.upc cpu.upc"
 			testFrame.Name = name
 			testFrame.Fields[1].Config.DisplayNameFromDS = name
 			if diff := cmp.Diff(testFrame, result.Frames[0], data.FrameTestCompareOptions()...); diff != "" {