fix spanner ensure migration table

wtnb-msr · mattes · commit 23a2745a3ade · 2017-07-09T10:57:10.000-07:00
diff --git a/database/spanner/spanner.go b/database/spanner/spanner.go
@@ -258,7 +258,7 @@ func (s *Spanner) Drop() error {
 func (s *Spanner) ensureVersionTable() error {
 	ctx := context.Background()
 	tbl := s.config.MigrationsTable
-	iter := s.db.data.Single().Read(ctx, tbl, spanner.AllKeys(), nil)
+	iter := s.db.data.Single().Read(ctx, tbl, spanner.AllKeys(), []string{"Version"})
 	if err := iter.Do(func(r *spanner.Row) error { return nil }); err == nil {
 		return nil
 	}

Original file line number	Diff line number	Diff line change
`@@ -258,7 +258,7 @@ func (s *Spanner) Drop() error {`
`258`	`258`	`func (s *Spanner) ensureVersionTable() error {`
`259`	`259`	`ctx := context.Background()`
`260`	`260`	`tbl := s.config.MigrationsTable`
`261`		`- iter := s.db.data.Single().Read(ctx, tbl, spanner.AllKeys(), nil)`
	`261`	`+ iter := s.db.data.Single().Read(ctx, tbl, spanner.AllKeys(), []string{"Version"})`
`262`	`262`	`if err := iter.Do(func(r *spanner.Row) error { return nil }); err == nil {`
`263`	`263`	`return nil`
`264`	`264`	`}`