Question

我有以下代码：

con.Open();

string exportQuery = "INSERT INTO OPENROWSET(@oledbType,@filepath,@query)";

string filepath = "'Excel 12.0;Database=C:\\Temp\\TestExcel.xlsx;";
string oledbType = "Microsoft.ACE.OLEDB.12.0";

string query = "SELECT * FROM categoryData";

SqlCommand cmd = new SqlCommand(exportQuery, con);
cmd.Parameters.AddWithValue("@filepath", filepath);
cmd.Parameters.AddWithValue("@oledbType", oledbType);
cmd.Parameters.AddWithValue("@query", query); 

cmd.ExecuteNonQuery();
con.Close();

我收到错误：

System.Data.SqlClient.SqlException：＆＃39; @ oledbType＆＃39;附近的语法不正确。＆＃39;

所以我认为

的语法

string exportQuery = "INSERT INTO OPENROWSET(@oledbType,@filepath,@query)";

不正确。有什么想法吗？

我使用上一个查询的更高级版本设法在SQL Server中使用

如果文件存在，则以下代码正确导出数据：

INSERT INTO OpenRowSet( 
'Microsoft.ACE.OLEDB.12.0' 
, 'Excel 12.0;Database=M:\TestExcel.xlsx;' 
, 'SELECT * FROM [Sheet1$]' 
) 
SELECT category as Category, SUM(ButtonClick) as Count FROM 
( SELECT COUNT(id) as id, category as category, locationName as location, sum(counter) as ButtonClick FROM categoryData AS t 
WHERE locationName IN ('all', 'loc1', 'loc2') 
AND date BETWEEN '2018-04-03' AND '2018-04-04'
GROUP BY locationName, category) 
AS SUBQUERY GROUP BY category ORDER BY Count ASC

导出到C＃我收到错误：

string exportQuery = @"INSERT INTO OpenRowSet('Microsoft.ACE.OLEDB.12.0', 'Excel 12.0;Database=M:\TestExcel.xlsx;' , 'SELECT * FROM [Sheet1$]') 
SELECT category as Category, SUM(ButtonClick) as Count FROM 
                    ( SELECT COUNT(id) as id, category as category, locationName as location, sum(counter) as ButtonClick FROM categoryData AS t 
WHERE locationName IN ('all', 'loc1', 'loc2') 
AND date BETWEEN '2018-04-03' AND '2018-04-04'
GROUP BY locationName, category) 
AS SUBQUERY GROUP BY category ORDER BY Count ASC";
SqlCommand cmd = new SqlCommand(exportQuery, con);
cmd.ExecuteNonQuery();

OLE DB提供程序＆＃34; Microsoft.ACE.OLEDB.12.0＆＃34;用于链接服务器＆＃34;（空）＆＃34;报告错误。提供商没有提供任何信息关于错误。无法初始化OLE DB的数据源对象提供商＆＃34; Microsoft.ACE.OLEDB.12.0＆＃34;对于链接服务器＆＃34;（null）＆＃34;。＆＃39;

真的很烦人的错误，并在这个问题上摸不着头脑。 :( :(

Answer 1

@Praveen声明您不能使用表达式，因此必须使用动态SQL：https://stackoverflow.com/a/13831792/361842

根据以上所述，我相信这就是你所需要的：

select P17192142_BORROWER.ABN_BOR_NO, P17192142_BORROWER.ABN_BOR_NAME, ABN_ACCESS_NO, ABN_LOAN_DATE
    from P17192142_BORROWER LEFT OUTER JOIN P17192142_LOAN ON
    P17192142_BORROWER.ABN_BOR_NO = P17192142_LOAN.ABN_BOR_NO
    where ABN_TOWN='Leicester' or ABN_TOWN='Hinkley'
    ORDER BY ABN_BOR_NAME, ABN_LOAN_DATE DESC

以上生成并执行动态SQL：

string filepath = @"Excel 12.0;Database=C:\Temp\TestExcel.xlsx;";
string oledbType = "Microsoft.ACE.OLEDB.12.0";
string querySheet = "SELECT * FROM [Sheet1$]"; //amend to match the sheet name: https://stackoverflow.com/a/910199/361842
string query = "SELECT * FROM categoryData"; //this is the SQL to get the data from your SQL DB to send to your sheet.

string exportQuery = @"
declare @sql nvarchar(max) = '
    INSERT INTO OpenRowSet(
    ' + quotename(@oledbType,'''') + '
    , ' + quotename(@filepath,'''') + '
    , ' + quotename(@querySheet,'''') + '
    )' +
    @query + ';'
exec (@sql)
";

SqlCommand cmd = new SqlCommand(exportQuery, con);
cmd.Parameters.AddWithValue("@filepath", filepath);
cmd.Parameters.AddWithValue("@oledbType", oledbType);
cmd.Parameters.AddWithValue("@querySheet", querySheet); 
cmd.Parameters.AddWithValue("@query", query); 

cmd.ExecuteNonQuery();
con.Close();

（这不是我自己玩过的功能，因此无法确认这是否有效;只是在本网站的其他地方找到答案）。

<强>更新

早些时候我说过

@Stephan声明要更新数据，您应该使用INSERT INTO OpenRowSet( 'Microsoft.ACE.OLEDB.12.0' , 'Excel 12.0;Database=C:\Temp\TestExcel.xlsx;' , 'SELECT * FROM [Sheet1$]' ) SELECT * FROM categoryData; 代替OpenDataSource：https://stackoverflow.com/a/29078719/361842

我已经看到情况并非如此。即见https://stackoverflow.com/a/13891752/361842的@AleksandrFedorenko。因此，修改了以上内容。

使用OPENROWSET的参数化查询

1 个答案: