Fix same issue as #39 but without changing the Value() interface

decimal.go

@@ -631,6 +631,10 @@ func (d *Decimal) Scan(value interface{}) error {
 	// first try to see if the data is stored in database as a Numeric datatype
 	switch v := value.(type) {
 
+	case float32:
+		*d = NewFromFloat(float64(v))
+		return nil
+
 	case float64:
 		// numeric in sqlite3 sends us float64
 		*d = NewFromFloat(v)
@@ -802,8 +806,8 @@ func unquoteIfQuoted(value interface{}) (string, error) {
 	case []byte:
 		bytes = v
 	default:
-		return "", fmt.Errorf("Could not convert value '%+v' to byte array",
+		return "", fmt.Errorf("Could not convert value '%+v' to byte array of type '%T'",
-			value)
+			value, value)
 	}
 
 	// If the amount is quoted, strip the quotes

decimal_test.go

@@ -1175,6 +1175,23 @@ func TestDecimal_Scan(t *testing.T) {
 		}
 	}
 
+	// apparently MySQL 5.7.16 and returns these as float32 so we need
+	// to handle these as well
+	dbvalueFloat32 := float32(54.33)
+	expected = NewFromFloat(float64(dbvalueFloat32))
+
+	err = a.Scan(dbvalueFloat32)
+	if err != nil {
+		// Scan failed... no need to test result value
+		t.Errorf("a.Scan(54.33) failed with message: %s", err)
+
+	} else {
+		// Scan succeeded... test resulting values
+		if !a.Equal(expected) {
+			t.Errorf("%s does not equal to %s", a, expected)
+		}
+	}
+
 	// at least SQLite returns an int64 when 0 is stored in the db
 	// and you specified a numeric format on the schema
 	dbvalueInt := int64(0)