sql-server - 如何将字符串与位 (documentTitle+Archive) SQL server 2005 连接起来

Question

当我尝试连接时出现以下错误
操作数类型冲突:文本与位不兼容
数据类型的无效运算符:运算符等于添加，类型等于位

SELECT
  F.SubmissionId, F.FormId, 
  F.DocumentTitle + F.Archive AS DocumentTitle,
  F.Keywords, F.PublishDate, F.PostedDate, F.ExpiredDate, 
  F.IsFlag, F.IsAdminOnly, F.IsCompleted, F.IsPublished,
  F.CreatedDate, F.AllowComments, 
  CASE WHEN F.Archive = 1 THEN 'Yes' ELSE 'No' END AS Archive, 
  I.ItemId, I.SubmissionId AS Expr1, I.ParamId, I.ParamValue
FROM
  dbo.app_FormSubmission AS F
    INNER JOIN dbo.app_FormSubmissionItems AS I ON 
      F.SubmissionId = I.SubmissionId

Answer 1

你需要转换，运行这个看看我的意思

declare @i bit
select @i = 1

select 'abc'  + convert(varchar(1),@i) -- fine
select 'abc'  + @i  -- will fail