为什么我得到二进制或字符串数​​据将被截断

Question

我有下面的查询，其中我插入临时表，当我尝试运行查询sql投掷二进制或字符串数​​据将被截断。但实际上我的数据属于nvarchar(400)列的PhoneModel定义范围。

CREATE TABLE #orders
(
    quoteHeaderId INT,
    PhoneModel nvarchar(400)
)

INSERT INTO #orders(quoteHeaderId, PhoneModel)
SELECT qh.QuoteHeaderId, 
   (Select ph.ModelName + ','  
    FROM t_handsetQuote h2
       INNER JOIN t_PhoneAudit t1 on t1.PhoneAuditId = h2.QuotePhoneAuditId
       INNER JOIN t_phoneModel ph on t1.phoneModelid = ph.phoneModelid                                                  
    where qh.QuoteHeaderId = h2.QuoteHeaderId
    FOR XML PATH('')
   ) AS PhoneModel
FROM t_QuoteHeader qh
INNER JOIN t_handsetQuote h on qh.QuoteHeaderId = h.QuoteHeaderId
INNER JOIN t_CustomerAdditionalInformation ch on qh.CustomerId = ch.CustomerId 
and keyName ='SendUpdatesByEmail' AND ch.value = 'yes'

Answer 1

我认为nvarchar(400)无法处理您插入的字符串的长度。

如何将PhoneModel nvarchar(400)更改为PhoneModel varchar(MAX)

Answer 2

运行没有insert语句的select查询，并检查len的{​​{1}}。记录可能会有所不同。

运行您的查询并提供反馈。

Answer 3

最容易看出导致问题的原因是使用select ... into：

SELECT qh.QuoteHeaderId, 
   (Select ph.ModelName + ','  
    FROM t_handsetQuote h2
       INNER JOIN t_PhoneAudit t1 on t1.PhoneAuditId = h2.QuotePhoneAuditId
       INNER JOIN t_phoneModel ph on t1.phoneModelid = ph.phoneModelid                                                  
    where qh.QuoteHeaderId = h2.QuoteHeaderId
    FOR XML PATH('')
   ) AS PhoneModel
into #orders
FROM t_QuoteHeader qh
INNER JOIN t_handsetQuote h on qh.QuoteHeaderId = h.QuoteHeaderId
INNER JOIN t_CustomerAdditionalInformation ch on qh.CustomerId = ch.CustomerId 
and keyName ='SendUpdatesByEmail' AND ch.value = 'yes'

然后通过命令len（PhoneModel）desc

来检查创建的表