Function tidbCreatePrimaryKeyHelper

backend/plugin/schema/tidb/walk_through.go:1358–1388

(t *model.TableMetadata, keys []string, tp string)

}

func tidbCreatePrimaryKeyHelper(t *model.TableMetadata, keys []string, tp string) *storepb.Advice {
	if t.GetIndex(PrimaryKeyName) != nil {
		content := fmt.Sprintf("Primary key exists in table `%s`", t.GetProto().Name)
		return &storepb.Advice{
			Status:        storepb.Advice_ERROR,
			Code:          code.PrimaryKeyExists.Int32(),
			Title:         content,
			Content:       content,
			StartPosition: &storepb.Position{Line: 0},
		}
	}

	pk := &storepb.IndexMetadata{
		Name:        PrimaryKeyName,
		Expressions: keys,
		Type:        tp,
		Unique:      true,
		Primary:     true,
		Visible:     true,
	}
	if err := t.CreateIndex(pk); err != nil {
		return &storepb.Advice{
			Status:        storepb.Advice_ERROR,
			Code:          code.IndexExists.Int32(),
			Title:         err.Error(),
			Content:       err.Error(),
			StartPosition: &storepb.Position{Line: 0},
		}
	}
	return nil
}

func restoreNode(node tidbast.Node, flag format.RestoreFlags) (string, error) {
	var buffer strings.Builder