将xlsx文件导出到SQL Server数据库中

Question

我试图将Excel文件作为BLOB保存在SQL Server数据库中并导出它们。 导入文件很安静，但是当我试图将它们导出到文件系统时，文件已损坏且无法读取。

我感到非常震惊，因为我认为微软在导入和导出自己的文件类型时不会有太多问题。

INSERT INTO TestBlob(tbName, tbDesc, tbBin) 
    SELECT 
     'testfile.xlsx', 'testfile', BulkColumn 
    FROM 
     OPENROWSET (Bulk 'C:\temp\testfile.xlsx', Single_Blob) AS tb 

我已经尝试导出它由bcp，但我刚刚得到一个损坏的文件。

我是否必须为xlsx文件提供特殊格式的文件？有没有其他方法可以将xlsx文件从数据库中取出？

在此先感谢

BR。 RF

Answer 1

EXEC sp_configure 'show advanced options', 1; 
GO 
RECONFIGURE; 
GO 
EXEC sp_configure 'Ad Hoc Distributed Queries', 1; 
GO 
RECONFIGURE; 
GO 


USE [AdventureWorks]; 
GO 
INSERT INTO OPENROWSET ('Microsoft.Jet.OLEDB.4.0', 'Excel 8.0;Database=c:\contact.xls;', 
'SELECT * FROM [Sheet1$]') 
SELECT TOP 5 FirstName, LastName 
FROM Person.Contact 
GO 

https://blog.sqlauthority.com/2008/01/08/sql-server-2005-export-data-from-sql-server-2005-to-microsoft-excel-datasheet/

或者。 。 。

1 Export data to existing EXCEL file from SQL Server table 

insert into OPENROWSET('Microsoft.Jet.OLEDB.4.0', 
    'Excel 8.0;Database=D:\testing.xls;', 
    'SELECT * FROM [SheetName$]') select * from SQLServerTable 



2 Export data from Excel to new SQL Server table 

select * 
into SQLServerTable FROM OPENROWSET('Microsoft.Jet.OLEDB.4.0', 
    'Excel 8.0;Database=D:\testing.xls;HDR=YES', 
    'SELECT * FROM [Sheet1$]') 



3 Export data from Excel to existing SQL Server table 

Insert into SQLServerTable Select * FROM OPENROWSET('Microsoft.Jet.OLEDB.4.0', 
    'Excel 8.0;Database=D:\testing.xls;HDR=YES', 
    'SELECT * FROM [SheetName$]') 



4 If you dont want to create an EXCEL file in advance and want to export data to it, use 


EXEC sp_makewebtask 
    @outputfile = 'd:\testing.xls', 
    @query = 'Select * from Database_name..SQLServerTable', 
    @colheaders =1, 
    @FixedFont=0,@lastupdated=0,@resultstitle='Testing details' 

(Now you can find the file with data in tabular format) 


5 To export data to new EXCEL file with heading(column names), create the following procedure 


create procedure proc_generate_excel_with_columns 
(
    @db_name varchar(100), 
    @table_name varchar(100), 
    @file_name varchar(100) 
) 
as 

--Generate column names as a recordset 
declare @columns varchar(8000), @sql varchar(8000), @data_file varchar(100) 
select 
    @columns=coalesce(@columns+',','')+column_name+' as '+column_name 
from 
    information_schema.columns 
where 
    table_name=@table_name 
select @columns=''''''+replace(replace(@columns,' as ',''''' as '),',',',''''') 

--Create a dummy file to have actual data 
select @data_file=substring(@file_name,1,len(@file_name)-charindex('\',reverse(@file_name)))+'\data_file.xls' 

--Generate column names in the passed EXCEL file 
set @sql='exec master..xp_cmdshell ''bcp " select * from (select '+@columns+') as t" queryout "'+@file_name+'" -c''' 
exec(@sql) 

--Generate data in the dummy file 
set @sql='exec master..xp_cmdshell ''bcp "select * from '+@db_name+'..'+@table_name+'" queryout "'+@data_file+'" -c''' 
exec(@sql) 

--Copy dummy file to passed EXCEL file 
set @sql= 'exec master..xp_cmdshell ''type '+@data_file+' >> "'+@file_name+'"''' 
exec(@sql) 

--Delete dummy file 
set @sql= 'exec master..xp_cmdshell ''del '+@data_file+'''' 
exec(@sql) 


After creating the procedure, execute it by supplying database name, table name and file path 

EXEC proc_generate_excel_with_columns 'your dbname', 'your table name','your file path' 

作为一种替代方法，您可以使用Excel中的“外部数据”。它可以使用ODBC连接从外部数据源获取数据：数据/获取外部数据/新建数据库查询。这样，即使数据库中的数据发生变化，您也可以轻松刷新。