Fix formatting of *float64 parameters (#215)

Attempt to fix #214

Signed-off-by: Esdras Beleza <[email protected]>

Author: esdrasbeleza

CHANGELOG.md

@@ -1,5 +1,7 @@
 # Release History
 
+- Fix formatting of *float64 parameters
+
 ## v1.5.4 (2024-04-10)
 
 - Added OAuth support for GCP (databricks/databricks-sql-go#189 by @rcypher-databricks)

driver_e2e_test.go

@@ -504,6 +504,10 @@ func strPtr(s string) *string {
 	return &s
 }
 
+func float64Ptr(f float64) *float64 {
+	return &f
+}
+
 func loadTestData(t *testing.T, name string, v any) {
 	if f, err := os.ReadFile(fmt.Sprintf("testdata/%s", name)); err != nil {
 		t.Errorf("could not read data from: %s", name)

parameter_test.go

@@ -12,7 +12,14 @@ import (
 
 func TestParameter_Inference(t *testing.T) {
 	t.Run("Should infer types correctly", func(t *testing.T) {
-		values := [5]driver.NamedValue{{Name: "", Value: float32(5.1)}, {Name: "", Value: time.Now()}, {Name: "", Value: int64(5)}, {Name: "", Value: true}, {Name: "", Value: Parameter{Value: "6.2", Type: SqlDecimal}}}
+		values := [6]driver.NamedValue{
+			{Name: "", Value: float32(5.1)},
+			{Name: "", Value: time.Now()},
+			{Name: "", Value: int64(5)},
+			{Name: "", Value: true},
+			{Name: "", Value: Parameter{Value: "6.2", Type: SqlDecimal}},
+			{Name: "", Value: Parameter{Value: float64Ptr(6.2), Type: SqlUnkown}},
+		}
 		parameters := convertNamedValuesToSparkParams(values[:])
 		assert.Equal(t, strconv.FormatFloat(float64(5.1), 'f', -1, 64), *parameters[0].Value.StringValue)
 		assert.NotNil(t, parameters[1].Value.StringValue)
@@ -21,6 +28,7 @@ func TestParameter_Inference(t *testing.T) {
 		assert.Equal(t, string("true"), *parameters[3].Value.StringValue)
 		assert.Equal(t, string("DECIMAL(2,1)"), *parameters[4].Type)
 		assert.Equal(t, string("6.2"), *parameters[4].Value.StringValue)
+		assert.Equal(t, &cli_service.TSparkParameterValue{StringValue: strPtr("6.2")}, parameters[5].Value)
 	})
 }
 func TestParameters_Names(t *testing.T) {

parameters.go

@@ -3,6 +3,7 @@ package dbsql
 import (
 	"database/sql/driver"
 	"fmt"
+	"reflect"
 	"strconv"
 	"strings"
 	"time"
@@ -90,57 +91,71 @@ func inferTypes(params []Parameter) {
 	for i := range params {
 		param := &params[i]
 		if param.Type == SqlUnkown {
-			switch value := param.Value.(type) {
-			case bool:
-				param.Value = strconv.FormatBool(value)
-				param.Type = SqlBoolean
-			case string:
-				param.Value = value
-				param.Type = SqlString
-			case int:
-				param.Value = strconv.Itoa(value)
-				param.Type = SqlInteger
-			case uint:
-				param.Value = strconv.FormatUint(uint64(value), 10)
-				param.Type = SqlInteger
-			case int8:
-				param.Value = strconv.Itoa(int(value))
-				param.Type = SqlInteger
-			case uint8:
-				param.Value = strconv.FormatUint(uint64(value), 10)
-				param.Type = SqlInteger
-			case int16:
-				param.Value = strconv.Itoa(int(value))
-				param.Type = SqlInteger
-			case uint16:
-				param.Value = strconv.FormatUint(uint64(value), 10)
-				param.Type = SqlInteger
-			case int32:
-				param.Value = strconv.Itoa(int(value))
-				param.Type = SqlInteger
-			case uint32:
-				param.Value = strconv.FormatUint(uint64(value), 10)
-				param.Type = SqlInteger
-			case int64:
-				param.Value = strconv.Itoa(int(value))
-				param.Type = SqlInteger
-			case uint64:
-				param.Value = strconv.FormatUint(uint64(value), 10)
-				param.Type = SqlInteger
-			case float32:
-				param.Value = strconv.FormatFloat(float64(value), 'f', -1, 32)
-				param.Type = SqlFloat
-			case time.Time:
-				param.Value = value.Format(time.RFC3339Nano)
-				param.Type = SqlTimestamp
-			default:
-				s := fmt.Sprintf("%s", param.Value)
-				param.Value = s
-				param.Type = SqlString
-			}
+			inferType(param)
 		}
 	}
 }
+
+func inferType(param *Parameter) {
+	if param.Value != nil && reflect.ValueOf(param.Value).Kind() == reflect.Ptr {
+		param.Value = reflect.ValueOf(param.Value).Elem().Interface()
+		inferType(param)
+		return
+	}
+
+	switch value := param.Value.(type) {
+	case bool:
+		param.Value = strconv.FormatBool(value)
+		param.Type = SqlBoolean
+	case string:
+		param.Value = value
+		param.Type = SqlString
+	case int:
+		param.Value = strconv.Itoa(value)
+		param.Type = SqlInteger
+	case uint:
+		param.Value = strconv.FormatUint(uint64(value), 10)
+		param.Type = SqlInteger
+	case int8:
+		param.Value = strconv.Itoa(int(value))
+		param.Type = SqlInteger
+	case uint8:
+		param.Value = strconv.FormatUint(uint64(value), 10)
+		param.Type = SqlInteger
+	case int16:
+		param.Value = strconv.Itoa(int(value))
+		param.Type = SqlInteger
+	case uint16:
+		param.Value = strconv.FormatUint(uint64(value), 10)
+		param.Type = SqlInteger
+	case int32:
+		param.Value = strconv.Itoa(int(value))
+		param.Type = SqlInteger
+	case uint32:
+		param.Value = strconv.FormatUint(uint64(value), 10)
+		param.Type = SqlInteger
+	case int64:
+		param.Value = strconv.Itoa(int(value))
+		param.Type = SqlInteger
+	case uint64:
+		param.Value = strconv.FormatUint(uint64(value), 10)
+		param.Type = SqlInteger
+	case float32:
+		param.Value = strconv.FormatFloat(float64(value), 'f', -1, 32)
+		param.Type = SqlFloat
+	case float64:
+		param.Value = strconv.FormatFloat(float64(value), 'f', -1, 64)
+		param.Type = SqlFloat
+	case time.Time:
+		param.Value = value.Format(time.RFC3339Nano)
+		param.Type = SqlTimestamp
+	default:
+		s := fmt.Sprintf("%s", param.Value)
+		param.Value = s
+		param.Type = SqlString
+	}
+}
+
 func convertNamedValuesToSparkParams(values []driver.NamedValue) []*cli_service.TSparkParameter {
 	var sparkParams []*cli_service.TSparkParameter