有没有 SQL function 可以自动把查询结果导出到 a.csv ？

Question

I'm trying to back up all the tables in a SQL Server Database. Here's the logic I'd like to execute:

For Each TableName in MyDatabase
SELECT * 
FROM TableName
Export Results to C:\TableName.csv
Loop

Answer 1

* Disclaimer that none of these will ever be a better option than a native backup in terms of backing of data. I'm assuming you simply want some flat file backups.

Several manual options are available from generating the scripts and data via Tasks->Generate Scripts , to manually running a select * from tablename and then right clicking -> Copy including header columns into their own excel files.

More automated options involve SSIS packages to handle this sort of enumerator logic. I believe that the best way to handle this would be a powershell script. Please see @Smor's comment to the following answer: SQL Server Management Studio 2012 - Export all tables of database as csv , for a detailed powershell solution.

The only T-SQL based querying options I'm aware of would be to attempt something of the following:

SELECT
    'insert into OPENROWSET(''Microsoft.Jet.OLEDB.4.0'', 
    ''Excel 8.0;Database=@filepath\'' + t.name + '.csv '', --@filepath would be replaced with your logic for determining filename+path
    ''SELECT * FROM [SheetName$]'') 
    select * from ' + t.name + ';'
FROM
    sys.tables

And executing the results of this script.