Question

我正在尝试使用带有链接服务器的OPENQUERY将数据从SQL Server导入到mysql。

我已经导入了几个表但是我遇到了一个有一个长varchar字段的表的问题。

每次运行此查询时，我都会得到以下内容

Msg 7344, Level 16, State 1, Line 2
The OLE DB provider "MSDASQL" for linked server "Serv1" could not INSERT INTO table "[MSDASQL]" because of column "Notes". Could not convert the data value due to reasons other than sign mismatch or overflow.

列Notes在SQL servr中的类型为varchar（8000），在MySQL中也是varchar（8000）。

问题是什么？为什么它给我这个错误？不是我先尝试将varchar（8000）的注释放在首位但是没有用。

INSERT OPENQUERY (Serv1, 'SELECT 
id,
i3_identity,
mid,
Notes,
Comments,
result_code,
Disposition,
completed_on,
calltype
FROM finaltesting.activities') 
  SELECT
  CAST(ID AS int) AS id,
  CAST(identity AS int) AS identity,
  CAST(merchantAccount AS varchar(255)) AS mid,
  Notes,
  CAST(Comments AS varchar(8000)) AS Comments,
  CAST(FinishCode AS varchar(255)) AS result_code,
  CAST(Disposition AS varchar(255)) AS Disposition,
  CAST(callDate AS datetime) AS completed_on,
  CAST(CallType AS varchar(255)) AS calltype
FROM activities

由于符号不匹配或溢出以外的原因，无法转换数据值。

Answer 1

我能够通过将MySQL中的列类型从varchar（8000）更改为Text来解决此问题。我使用的是MySQL 5.6.12。将表单SQL Server转换为MySQL服务器时，可能是列类型问题。

由于

SQL Server无法转换数据值

1 个答案: