sql-server-2008 - “获取在预期条件的上下文中指定的非布尔类型的表达式”我的查询错误？

Question

当我将此查询传递给执行动态 sql 的 proc 时出现错误：

"select @display =  @display + gp2.ProblemDesc  + ''|' '
from (SELECT gp.GrantProblemID, gp.ProblemDesc, gps.GrantProblemStatus, row_number() over (partition by gp.grantproblemid order by p.periodid desc) ranking 
from MergedProgressReport.dbo.[PeriodAgencyGrantProblems] pagp    
inner join MergedProgressReport.dbo.PeriodAgencyGrants pag on pag.PeriodAgencyGrantsID = pagp.PeriodAgencyGrantID 
and pag.GrantNumber =  ''2011UMWX0001''   
inner join MergedProgressReport.dbo.periodagencyinfo pai on pag.PeriodAgencyInfoID = pai.PeriodAgencyInfoID   
inner join MergedProgressReport.dbo.Periods p on p.PeriodID = pai.PeriodID   
inner join MergedProgressReport.dbo.GrantProblemStatus gps on pagp.GrantProblemStatusID = gps.GrantProblemStatusID  
inner join MergedProgressReport.dbo.GrantProblems gp on pagp.GrantProblemID = gp.GrantProblemID 
and gp.GrantProblemAreaID = 7) xx right join MergedProgressReport.dbo.GrantProblems gp2 on xx.GrantProblemID = gp2.GrantProblemID and xx.ranking = 1 
where gp2.GrantProblemAreaID = 7 "

我的过程：

CREATE proc [dbo].[Review_Get_PrePopValue](@sqlQuery nvarchar(500), @display nvarchar(200) OUTPUT)
as

EXEC sp_executesql @sqlQuery,   
      N'@display varchar(200) output', 
      @display = @display output

Answer 1

我的错误，我的参数@sqlQuery nvarchar(500) 太小，它截断了我的 proc 中的 sql 语句。只需将其调整为 3000。