在 SQL 服务器中执行超过长度的 sp_executesql

Question

我的SQL服务器版本是SQLServer 2008 R2。

in 语句中大约有 100 行。

我用这个SQL做一个动态查询：

DECLARE @DynamicDate nvarchar(100) 
DECLARE @SQLString_1 nvarchar(max)

SET @DynamicDate='20181021'
SET @SQLString_1 =  
     N'select  *    
 from T1_'+@DynamicDate+' w      
 left join      
 T2 c      
 on w.ASSET_ID=c.DEVICE_ID      
 left join      
 T3 cm      
 on c.DEVICE_ID=cm.ASSET_ID      
 left join      
 T4 gm      
 on cm.GROUP_ID=gm.GROUP_ID      
 left join      
 T5 em      
 on w.EVENT_ID =em.EVENT_ID      
 and w.EVENT_CATEGORY_ID=em.EVENT_CATEGORY_ID      
 left join T6 sa      
 on w.PROCESS_NAME=sa.PROCESS_NAME
 where 
 w.ASSET_ID in (''{XXXXXXXX-XXXX-XXXX-XXXX-XXXXXXXXXXXX}'',
''{XXXXXXXX-XXXX-XXXX-XXXX-XXXXXXXXXXXX}'',
''{XXXXXXXX-XXXX-XXXX-XXXX-XXXXXXXXXXXX}'',
''{XXXXXXXX-XXXX-XXXX-XXXX-XXXXXXXXXXXX}'',
   ……
''{XXXXXXXX-XXXX-XXXX-XXXX-XXXXXXXXXXXX}'',
''{XXXXXXXX-XXXX-XXXX-XXXX-XXXXXXXXXXXX}'',
''{XXXXXXXX-XXXX-XXXX-XXXX-XXXXXXXXXXXX}'',
''{XXXXXXXX-XXXX-XXXX-XXXX-XXXXXXXXXXXX}'',
''{XXXXXXXX-XXXX-XXXX-XXXX-XXXXXXXXXXXX}''
)
 '
print(@SQLString_1)
--EXECUTE sp_executesql @SQLString_1

当我打印 sql 时。输出如下：

select                   
 *    
 from T1_20181021 w      
 left join      
 T2 c      
 on w.ASSET_ID=c.DEVICE_ID      
 left join      
 T3 cm      
 on c.DEVICE_ID=cm.ASSET_ID      
 left join      
 T4 gm      
 on cm.GROUP_ID=gm.GROUP_ID      
 left join      
 T5 em      
 on w.EVENT_ID =em.EVENT_ID      
 and w.EVENT_CATEGORY_ID=em.EVENT_CATEGORY_ID      
 left join T6 sa      
 on w.PROCESS_NAME=sa.PROCESS_NAME
 where 
 w.ASSET_ID in (
'{XXXXXXXX-XXXX-XXXX-XXXX-XXXXXXXXXXXX}',
'{XXXXXXXX-XXXX-XXXX-XXXX-XXXXXXXXXXXX}',
  ……
'{XXXXXXXX-XXXX

只打印了一部分。

当我使用sp_executesql @SQLString_1

错误是：

Message 105, level 15, state 1, and line 96 The quote is not closed after the string '{XXXXXXXX-XXXX-XXXX-XXXX-XXXXXXXXXXXX}'. Message 102, level 15, state 1, line 96 There is an incorrect syntax in the vicinity of '{XXXXXXXX-XXXX-XXXX-XXXX-XXXXXXXXXXXX}'.

我在@SQLString_1,

中使用了关键字max

所以我不能用execute sp_executesql`，好像不行。

我该如何解决？

Answer 1

关于您问题的打印部分，print限制为 4000 个符号。如果你想在控制台中转储更长的文本，你可以像这样在块上打印它：

print substring(@SQLString_1,    1, 4000)
print substring(@SQLString_1, 4001, 4000)
print substring(@SQLString_1, 8001, 4000)

根据需要添加尽可能多的 4k 块。每个命令都会在一个新行上打印它的块，所以你的查询会有点混乱，但这些额外的换行符很容易找到和修复：

left join T6 sa
on w.PROCES <-- Find this place and join the lines together, to get the original query

S_NAME=sa.PROCESS_NAME

where

关于查询错误，您的查询字符串看起来被转换为非最大类型，因此被截断为 4000 个字符。检查你的串联。如有必要，将非最大部分转换为 nvarchar(max)。

在 SQL 服务器中执行超过长度的 sp_executesql

execute sp_executesql over length in SQL Server

sql-server

sql-server-2008-r2