A conversion func can be passed to Scan methods.

example_test.go

@@ -125,21 +125,28 @@ func ExampleStmt_Scan() {
 	check(err)
 	defer db.Close()
 
-	s, err := db.Prepare("SELECT 1 as id, 'Go' as name UNION SELECT 2, 'SQLite'")
+	s, err := db.Prepare("SELECT 1 as id, 'Go' as name, 'Y' as status UNION SELECT 2, 'SQLite', 'yes'")
 	check(err)
 	defer s.Finalize()
 
 	var id int
 	var name string
+	var status bool
+
+	converter := func(value interface{}) (bool, error) {
+		status = value == "Y" || value == "yes"
+		return false, nil
+	}
+
 	err = s.Select(func(s *sqlite.Stmt) (err error) {
-		if err = s.Scan(&id, &name); err != nil {
+		if err = s.Scan(&id, &name, converter); err != nil {
 			return
 		}
-		fmt.Println(id, name)
+		fmt.Println(id, name, status)
 		return
 	})
-	// Output: 1 Go
-	// 2 SQLite
+	// Output: 1 Go true
+	// 2 SQLite true
 }
 
 func ExampleNewBackup() {

stmt.go

@@ -68,6 +68,7 @@ func (s *Stmt) specificError(msg string, a ...interface{}) error {
 }
 
 // SQL statement
+// (See http://sqlite.org/c3ref/stmt.html)
 type Stmt struct {
 	c                  *Conn
 	stmt               *C.sqlite3_stmt
@@ -562,6 +563,7 @@ func (s *Stmt) ScanByName(name string, value interface{}) (bool, error) {
 //    (*)*float64
 //    (*)*[]byte
 //    *interface{}
+//    func(interface{}) (bool, error)
 //
 // Returns true when column is null.
 // Calls sqlite3_column_(blob|double|int|int64|text) depending on arg type.
@@ -656,6 +658,8 @@ func (s *Stmt) ScanByIndex(index int, value interface{}) (bool, error) {
 	case *interface{}:
 		*value = s.ScanValue(index)
 		isNull = *value == nil
+	case func(interface{}) (bool, error):
+		isNull, err = value(s.ScanValue(index))
 	default:
 		return false, s.specificError("unsupported type in Scan: %s", reflect.TypeOf(value))
 	}