从文件夹导入多个CSV文件到SQL Server

Question

我有一个名为"转储"的文件夹. 此文件夹包含各种.CSV文件.文件夹位置是'C:\ Dump'

我想将这些文件的内容导入SQL Server.我想要粗略的代码以及适当的注释,以便我理解它.

我尝试了一些我在网上找到的代码.但是由于一些奇怪的原因,他们并没有为我做好准备.

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我想要的步骤是

步骤1:将文件夹中的所有文件名复制到表中

第2步:遍历表并使用批量插入从文件中复制数据.

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有人请帮我解决这个问题.非常感谢提前:)

Answer 1

    --BULK INSERT MULTIPLE FILES From a Folder 

    --a table to loop thru filenames drop table ALLFILENAMES
    CREATE TABLE ALLFILENAMES(WHICHPATH VARCHAR(255),WHICHFILE varchar(255))

    --some variables
    declare @filename varchar(255),
            @path     varchar(255),
            @sql      varchar(8000),
            @cmd      varchar(1000)


    --get the list of files to process:
    SET @path = 'C:\Dump\'
    SET @cmd = 'dir ' + @path + '*.csv /b'
    INSERT INTO  ALLFILENAMES(WHICHFILE)
    EXEC Master..xp_cmdShell @cmd
    UPDATE ALLFILENAMES SET WHICHPATH = @path where WHICHPATH is null


    --cursor loop
    declare c1 cursor for SELECT WHICHPATH,WHICHFILE FROM ALLFILENAMES where WHICHFILE like '%.csv%'
    open c1
    fetch next from c1 into @path,@filename
    While @@fetch_status <> -1
      begin
      --bulk insert won't take a variable name, so make a sql and execute it instead:
       set @sql = 'BULK INSERT Temp FROM ''' + @path + @filename + ''' '
           + '     WITH ( 
                   FIELDTERMINATOR = '','', 
                   ROWTERMINATOR = ''\n'', 
                   FIRSTROW = 2 
                ) '
    print @sql
    exec (@sql)

      fetch next from c1 into @path,@filename
      end
    close c1
    deallocate c1


    --Extras

    --delete from ALLFILENAMES where WHICHFILE is NULL
    --select * from ALLFILENAMES
    --drop table ALLFILENAMES