Question

我正在尝试将我的SQL Server数据库中的Excel文件保存为BLOB并导出它们。导入文件非常简单，但是当我尝试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遇到太多问题。

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

我已经尝试通过bcp导出它但我刚收到一个损坏的文件。

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

提前致谢

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'

作为替代方案，您可以使用＆＃34;外部数据＆＃34;来自Excel。它可以使用ODBC连接从外部源获取数据：数据/获取外部数据/新数据库查询。这样，即使数据库中的数据发生变化，您也可以轻松刷新。

从SQL Server数据库导出xlsx文件

1 个答案: