IF COL_LENGTH('[dbo].[parcela]', 'cri_data') IS NULL
BEGIN
  ALTER TABLE [dbo].[parcela] ADD cri_data DATETIME2 NULL;
END

IF COL_LENGTH('[dbo].[parcela]', 'usuariocriacao') IS NULL
BEGIN
  ALTER TABLE [dbo].[parcela] ADD usuariocriacao BIGINT NULL;
END

IF COL_LENGTH('[dbo].[parcela]', 'atu_data') IS NULL
BEGIN
  ALTER TABLE [dbo].[parcela] ADD atu_data DATETIME2 NULL;
END

IF COL_LENGTH('[dbo].[parcela]', 'usuarioalteracao') IS NULL
BEGIN
  ALTER TABLE [dbo].[parcela] ADD usuarioalteracao BIGINT NULL;
END