Better implementatin with switch and support for 0

decimal.go

@@ -471,20 +471,29 @@ func (d Decimal) MarshalJSON() ([]byte, error) {
 func (d *Decimal) Scan(value interface{}) error {
 	var err error
 	// first try to see if the data is stored in database as a Numeric datatype
-	if val, ok := value.(float64); ok {
-		*d = NewFromFloat(val)
-		return err
-	}
+	switch value.(type) {
 
-	// then try to see if it is stored as a string
+	case float64:
+		// numeric in sqlite3 sends us float64
+		*d = NewFromFloat(value.(float64))
+		return err
+
+	case int64:
+		// at least in sqlite3 when the value is 0 in db, the data is sent
+		// to us as an int64 instead of a float64 ...
+		*d = NewFromFloat(float64(value.(int64)))
+		return err
+
+	default:
+		// default is trying to interpret value stored as string
 		str, err := unquoteIfQuoted(value)
 		if err != nil {
 			return err
 		}
 		*d, err = NewFromString(str)
-
 		return err
 	}
+}
 
 // Value implements the driver.Valuer interface for database serialization.
 func (d Decimal) Value() (driver.Value, error) {