Client

Spanner

Go Environment

Go1.21

Code

e.g.

	type Singer struct {
		ID         int64     `spanner:"ID"`
		Name       string    `spanner:"Name"`
		LastUpdate time.Time `spanner:"LastUpdate"`
	}
	var singer []Singer
	if err := spanner.SelectAll(iter, &singer); err != nil {
		fmt.Println(err) // spanner: code = "InvalidArgument", desc = "Go struct {ID:0 Name: LastUpdate:0001-01-01 00:00:00 +0000 UTC}(type reflect.Value) has no or duplicate fields for Cloud Spanner STRUCT field LastUpdate"
		return
	}

Additional context

• The problem seems to be when entering the following branch.
  

  google-cloud-go/spanner/row.go

  Line 549 in 2fe67df

  if fieldType.Type.Kind() == reflect.Struct {

• After initFieldTag, fmt.Println(fieldTag) // map[ID:<int64 Value> Name:] no LastUpdate Field.
  

  google-cloud-go/spanner/row.go

  Line 511 in 2fe67df

  initFieldTag(sliceItem, &fieldTag)