Fix NamedValue

driver.go

@@ -356,7 +356,7 @@ func (s *Stmt) bindNamedValue(args []driver.NamedValue) error {
 				return err
 			}
 		} else {
-			index, err := s.BindParameterIndex(v.Name)
+			index, err := s.BindParameterIndex(":" + v.Name) // TODO "$" and "@"
 			if err != nil {
 				return err
 			}

driver_test.go

@@ -23,6 +23,7 @@ const (
 		"UPDATE test SET name = 'El Barto' WHERE name = 'Bart';" +
 		"DELETE FROM test WHERE name = 'Bart';"
 	insert       = "INSERT INTO test (name) VALUES (?)"
+	insert_named = "INSERT INTO test (name) VALUES (:name)"
 	query        = "SELECT * FROM test WHERE name LIKE ?"
 )
 
@@ -104,6 +105,19 @@ func TestSqlInsert(t *testing.T) {
 	assert.Equal(t, int64(1), changes, "rowsAffected")
 }
 
+func TestSqlInsertNamed(t *testing.T) {
+	db := sqlCreate(ddl, t)
+	defer checkSqlDbClose(db, t)
+	result, err := db.Exec(insert_named, sql.Named("name", "Bart"))
+	checkNoError(t, err, "Error updating data: %s")
+	id, err := result.LastInsertId()
+	checkNoError(t, err, "Error while calling LastInsertId: %s")
+	assert.Equal(t, int64(1), id, "lastInsertId")
+	changes, err := result.RowsAffected()
+	checkNoError(t, err, "Error while calling RowsAffected: %s")
+	assert.Equal(t, int64(1), changes, "rowsAffected")
+}
+
 func TestSqlExecWithIllegalCmd(t *testing.T) {
 	db := sqlCreate(ddl+dml, t)
 	defer checkSqlDbClose(db, t)
@@ -160,6 +174,23 @@ func TestSqlPrepare(t *testing.T) {
 	assert.Equal(t, int64(1), changes, "rowsAffected")
 }
 
+func TestSqlPrepareNamed(t *testing.T) {
+	db := sqlCreate(ddl+dml, t)
+	defer checkSqlDbClose(db, t)
+
+	stmt, err := db.Prepare(insert_named)
+	checkNoError(t, err, "Error while preparing stmt: %s")
+	defer checkSqlStmtClose(stmt, t)
+	result, err := stmt.Exec(sql.Named("name", "Bart"))
+	checkNoError(t, err, "Error while executing stmt: %s")
+	id, err := result.LastInsertId()
+	checkNoError(t, err, "Error while calling LastInsertId: %s")
+	assert.Equal(t, int64(3), id, "lastInsertId")
+	changes, err := result.RowsAffected()
+	checkNoError(t, err, "Error while calling RowsAffected: %s")
+	assert.Equal(t, int64(1), changes, "rowsAffected")
+}
+
 func TestRowsWithStmtClosed(t *testing.T) {
 	db := sqlCreate(ddl+dml, t)
 	defer checkSqlDbClose(db, t)