fix(query): return full float value in query results

CHANGELOG.md

@@ -9,6 +9,7 @@ adhere to [Semantic Versioning](https://semver.org) starting `v22.0.0`.
 
 - **Fixed**
   - fix(core): fix panic in verifyUniqueWithinMutation when mutation is conditionally pruned (#9450)
+  - fix(query): return full float value in query results (#9492)
 
 ## [v24.X.X] - YYYY-MM-DD
 

query/fastjson_test.go

@@ -59,7 +59,7 @@ func TestSubgraphToFastJSON(t *testing.T) {
 
 	t.Run("With a valid float result", func(t *testing.T) {
 		sg := subgraphWithSingleResultAndSingleValue(task.FromFloat(42.0))
-		assertJSON(t, `{"query":[{"val":42.000000}]}`, sg)
+		assertJSON(t, `{"query":[{"val":42}]}`, sg)
 	})
 
 	t.Run("With invalid floating points", func(t *testing.T) {

query/outputnode.go

@@ -670,7 +670,7 @@ func valToBytes(v types.Val) ([]byte, error) {
 			return nil, errors.New("Unsupported floating point number in float field")
 		}
 
-		return []byte(fmt.Sprintf("%f", f)), nil
+		return []byte(fmt.Sprintf("%g", f)), nil
 	case types.BoolID:
 		if v.Value.(bool) {
 			return boolTrue, nil

query/outputnode_test.go

@@ -294,3 +294,13 @@ func TestMarshalTimeJson(t *testing.T) {
 		require.Equal(t, tc.out, string(out))
 	}
 }
+
+func TestMarshalFloat(t *testing.T) {
+	var (
+		in  = types.Val{Tid: types.FloatID, Value: 0.123456789012345}
+		out = "0.123456789012345"
+	)
+	result, err := valToBytes(in)
+	require.NoError(t, err)
+	require.Equal(t, out, string(result))
+}