sql-server - SQL Server : DELETE FROM OPENDATASOURCE

Question

这有效:

SELECT * FROM OPENDATASOURCE( 
       'Microsoft.ACE.OLEDB.12.0', 
       'Data Source=d:\JobFiles\MyFile.xlsx; 
        Extended properties=Excel 8.0')...MySheet$

这也是:

INSERT INTO OPENDATASOURCE( 
       'Microsoft.ACE.OLEDB.12.0', 
       'Data Source=d:\JobFiles\MyFile.xlsx; 
        Extended properties=Excel 8.0')...MySheet$
SELECT * FROM blahblahblah

那为什么不呢？

DELETE FROM OPENDATASOURCE( 
        'Microsoft.ACE.OLEDB.12.0', 
        'Data Source=d:\JobFiles\MyFile.xlsx;
         Extended properties=Excel 8.0')...MySheet$

我做了一些搜索，但运气不佳。归根结底，我所需要的只是删除 Excel 行，然后才能插入新数据，并且我希望仅使用 SQL 来实现此目的。

Answer 1

您无法通过 OPENDATASOURCE 删除整行。根据http://support.microsoft.com/kb/257819 :

Delete

You are more restricted in deleting Excel data than data from a relational data source. In a relational database, "row" has no meaning or existence apart from "record"; in an Excel worksheet, this is not true. You can delete values in fields (cells). However, you cannot:

• Delete an entire record at once or you receive the following error message:

Deleting data in a linked table is not supported by this ISAM.

You can only delete a record by blanking out the contents of each individual field.

• Delete the value in a cell containing an Excel formula or you receive the following error message:

Operation is not allowed in this context.

• You cannot delete the empty spreadsheet row(s) in which the deleted data was located, and your recordset will continue to display empty records corresponding to these empty rows.