我创建了一个存储过程，但执行没有错误，但手动运行它显示错误

Question

我创建了一个存储过程;它执行成功，但手动执行时显示错误。

这里是我的存储过程

USE [chandru] 
GO 
SET ANSI_NULLS ON 
GO 
SET QUOTED_IDENTIFIER ON 
GO 
alter procedure [dbo].[Insert_BandWidthDetails]   
@CurrentState nvarchar(50),@Process nvarchar(100),@DateTime nvarchar(100),@IPaddress nvarchar(50),@UploadedBytes nvarchar(max),@DownloadedBytes nvarchar(max),@Duration nvarchar(200),@FileSize nvarchar(max),@StreamId nvarchar(100),@PlayerId nvarchar(100), 
@UserName nvarchar(200),@UserId nvarchar(200),@CountryName nvarchar(100),@RegionName nvarchar(100),@Latitude nvarchar(100),@Longitude nvarchar(100),@City nvarchar(100)   
as   
begin  


declare @Sql nvarchar(max)  

set @Sql='declare @countbandwidthtable int select @countbandwidthtable=COUNT(*) from BandWidth'+@UserName+@UserId+ 
    +'if(@countbandwidthtable>0) 
    begin 
     declare @count int select @count=COUNT(*) from BandWidth'+@UserName+@UserId+' where CurrentState='''+@CurrentState+''' and Process='''+@Process+''' and DateTime='''+@DateTime+''' and IPaddress='''+@IPaddress+''' and UploadedBytes='''+@UploadedBytes+''' and DownloadedBytes='''+@DownloadedBytes+''' and Duration='''+@Duration+''' and FileSize='''+@FileSize+''' and StreamId='''+@StreamId+''' and PlayerId='''+@PlayerId+''' and UserName='''+@UserName+'' 
     +'if(@count=0)   
     begin   
      insert into BandWidth'+@UserName+@UserId+' values('''+@CurrentState+''','''+@Process+''','''+@DateTime+''','''+@IPaddress+''','''+@UploadedBytes+''','''+@DownloadedBytes+''','''+@Duration+''','''+@FileSize+''','''+@StreamId+''','''+@PlayerId+''','''+@UserName+''','''+@CountryName+''','''+@RegionName+''','''+@Latitude+''','''+@Longitude+''','''+@City+''')  
     end   
    end 
else 
    begin 
     select * into BandWidth'+ @UserName+ cast(@UserID as nvarchar(max)) +' from BandWidthSample where 1=2 
     insert into BandWidth'+@UserName+@UserId+' values('''+@CurrentState+''','''+@Process+''','''+@DateTime+''','''+@IPaddress+''','''+@UploadedBytes+''','''+@DownloadedBytes+''','''+@Duration+''','''+@FileSize+''','''+@StreamId+''','''+@PlayerId+''','''+@UserName+''','''+@CountryName+''','''+@RegionName+''','''+@Latitude+''','''+@Longitude+''','''+@City+''')  
    end '  
exec(@Sql) 
end 

此存储过程的执行后，命令成功是，现在我将：

Insert_BandWidthDetails 'stream','play','11:17:00','10.0.3.0','12344','1234','2.09','22','1','11223','sample','31','india','asd','23','23','chennai' 

我收到错误

消息102，Level 15，State 1，Line 1
'>'附近语法不正确。
消息102，级别15，状态1，行邻近 '流'
消息105，级别15，状态1 5
的语法不正确，行字符串 '）' 末端后11
闭合的引号。

我不知道如何清除这个错误，我在'>'这个符号附近没有发现任何错误，你们可以帮我解决这个错误吗？

Answer 1

除了每个用户有单个表的设计之外，问题是SQL的第一行在IF语句之前没有空格。如果您想在SQL中换行，那么您需要添加+ CHAR(10)，并且不在代码中直接换行。

如果要继续使用动态SQL，我会建议重新格式化SET语句如下：

set @Sql='declare @countbandwidthtable int' + CHAR(10) + 
     'select @countbandwidthtable=COUNT(*) from BandWidth' + @UserName + @UserId + CHAR(10) + 
     'if(@countbandwidthtable>0)' + CHAR(10) + 
      'begin' + CHAR(10) + 
      'declare @count int' + CHAR(10) + 
      'select @count=COUNT(*) from BandWidth'+@UserName+@UserId+' where CurrentState='''+@CurrentState+''' and Process='''+@Process+''' and DateTime='''+@DateTime+''' and IPaddress='''+@IPaddress+''' and UploadedBytes='''+@UploadedBytes+''' and DownloadedBytes='''+@DownloadedBytes+''' and Duration='''+@Duration+''' and FileSize='''+@FileSize+''' and StreamId='''+@StreamId+''' and PlayerId='''+@PlayerId+''' and UserName='''+@UserName+'' + CHAR(10) + 
      'if(@count=0)' + CHAR(10) + 
       'begin' + CHAR(10) + 
       'insert into BandWidth'+@UserName+@UserId+' values('''+@CurrentState+''','''+@Process+''','''+@DateTime+''','''+@IPaddress+''','''+@UploadedBytes+''','''+@DownloadedBytes+''','''+@Duration+''','''+@FileSize+''','''+@StreamId+''','''+@PlayerId+''','''+@UserName+''','''+@CountryName+''','''+@RegionName+''','''+@Latitude+''','''+@Longitude+''','''+@City+''')' + CHAR(10) + 
       'end' + CHAR(10) + 
      'end' + CHAR(10) + 
     'else' + CHAR(10) + 
      'begin' + CHAR(10) + 
      'select * into BandWidth'+ @UserName+ cast(@UserID as nvarchar(max)) +' from BandWidthSample where 1=2' + CHAR(10) + 
      'insert into BandWidth'+@UserName+@UserId+' values('''+@CurrentState+''','''+@Process+''','''+@DateTime+''','''+@IPaddress+''','''+@UploadedBytes+''','''+@DownloadedBytes+''','''+@Duration+''','''+@FileSize+''','''+@StreamId+''','''+@PlayerId+''','''+@UserName+''','''+@CountryName+''','''+@RegionName+''','''+@Latitude+''','''+@Longitude+''','''+@City+''')' + CHAR(10) + 
      'end' + CHAR(10) 

不过，我会强烈建议您，如果可能的话，只是有一个包含一个频带表包含UserName和UserId的列。那么你将不必拥有动态SQL。

Answer 2

尝试进行改变：

这里

declare @count int select @count=COUNT(*) from BandWidth'+@UserName+@UserId+' where CurrentState='''+@CurrentState+''' and Process='''+@Process+''' and DateTime='''+@DateTime+''' and IPaddress='''+@IPaddress+''' and UploadedBytes='''+@UploadedBytes+''' and DownloadedBytes='''+@DownloadedBytes+''' and Duration='''+@Duration+''' and FileSize='''+@FileSize+''' and StreamId='''+@StreamId+''' and PlayerId='''+@PlayerId+''' and UserName='''+@UserName+'' 

到

declare @count int select @count=COUNT(*) from BandWidth'+@UserName+@UserId+' where CurrentState='''+@CurrentState+''' and Process='''+@Process+''' and DateTime='''+@DateTime+''' and IPaddress='''+@IPaddress+''' and UploadedBytes='''+@UploadedBytes+''' and DownloadedBytes='''+@DownloadedBytes+''' and Duration='''+@Duration+''' and FileSize='''+@FileSize+''' and StreamId='''+@StreamId+''' and PlayerId='''+@PlayerId+''' and UserName='''+@UserName+'''' 

@username后，查看了2个新的'到底。这是唯一的变化。 告诉我它的工作原理