Question

我有一个.txt文件，其中包含必须存储在表格中的数据，我已经为此编写了一个查询。

问题是有很多.txt个文件，可以添加更多文件，我认为可以创建一个包含.txt个文件名的表。我需要为每个文件运行查询，使用这些名称作为变量。

这是我的代码：

CREATE TABLE #textfile (line varchar(8000)) 

BULK INSERT #textfile 
FROM 'c:\MXAPT1_SNDA01_1_SSD.TXT' 
GO 

-- Now read it and insert 
INSERT INTO san3parvols(disco, tipo, fecha, totcap, alloc, disp)
    (SELECT 
         disco, tipo, fecha, 
         SUM(totcap) AS totcap, SUM(alloc) AS alloc,
         SUM(totcap) - SUM(alloc) AS disp  
     FROM
        (SELECT 
             'MXAPT1_SNDA01_TRIARA_1' as disco, 'SSD' AS tipo, 
             CASE 
                WHEN substring(line,3,4) = 'tal' 
                   THEN 'Total Capacity' 
                   EKSE 'Allocated' 
             END AS valor, 
             CAST(substring(line, PatIndex('%[0-9]%', line), LEN(line)) AS numeric(18,2)) AS cap,
             CONVERT(DATE, getdate()) AS fecha,
             CAST(CASE 
                     WHEN substring(line, 3, 4) = 'tal'
                        THEN substring(line, PatIndex('%[0-9]%', line), LEN(line)) 
                        ELSE 0 
                  END AS numeric(18,2)) AS totcap,
             CAST(CASE 
                     WHEN substring(line, 3, 4) = 'Allo'
                        THEN substring(line, PatIndex('%[0-9]%', line), len(line)) 
                        ELSE 0 
                  END AS numeric(18,2)) AS alloc
         FROM 
             #textfile  
         WHERE
             substring(line, 3, 4) IN ('tal', 'Allo')) AS txt1
GROUP BY
    disco, tipo, fecha)

-- And then clean up 
DROP TABLE #textfile 
GO

我知道你可以提供帮助，我提前谢谢你。

修改

以防有人需要我对M.Ali的最后一个问题的答案，我会分享有关如何添加多个变量的代码。

Declare @File Nvarchar(max), @sql Nvarchar(max), @name Nvarchar(max), @tipo Nvarchar(max);

Declare Cur CURSOR LOCAL FAST_FORWARD FOR 
SELECT trespar, name, tipo
FROM sanparlist 

OPEN Cur 

  FETCH NEXT FROM Cur INTO @File, @name, @tipo  

WHILE (@@FETCH_STATUS = 0)
BEGIN

   TRUNCATE TABLE Textfile_Stagging_table

   SET @Sql = N' BULK INSERT Textfile_Stagging_table 
                 FROM ''' + @File + ''''

   Execute sp_executesql @Sql

   INSERT INTO san3parvols(disco, tipo, fecha,totcap, alloc, disp)
(SELECT disco, tipo, fecha, sum(totcap) AS totcap, sum(alloc) AS alloc,sum(totcap)-sum(alloc) AS disp  FROM 
(SELECT @name AS disco, @tipo AS tipo, 
        CASE WHEN substring(line,3,4) = 'tal'THEN 'Total Capacity' ELSE 'Allocated' END AS valor, 
        cast(substring(line, PatIndex('%[0-9]%', line), len(line)) AS numeric(18,2) )AS cap,
        convert(DATE,getdate()) AS fecha,
        cast(CASE WHEN substring(line,3,4) = 'tal'THEN substring(line, PatIndex('%[0-9]%', line), len(line)) ELSE 0 END AS numeric(18,2)) AS totcap,
        cast(CASE WHEN substring(line,3,4) = 'Allo'THEN substring(line, PatIndex('%[0-9]%', line), len(line)) ELSE 0 END AS numeric(18,2)) AS alloc
FROM Textfile_Stagging_table  
WHERE substring(line,3,4) in('tal','Allo')) AS txt1
GROUP BY disco, tipo, fecha)

     FETCH NEXT FROM Cur INTO @File, @name, @tipo  
END

CLOSE Cur 
DEALLOCATE Cur;

Answer 1

是的，可以在表中包含文件名，并编写查询以从表中获取文本文件名并将其插入数据库。

-- Create a Table in SQL Server 

CREATE TABLE Textfile_Stagging_table (line varchar(8000)) 
GO

创建光标以遍历包含txt文件详细信息的表。
说你的桌子叫＃34; TxtFile＆＃34;并且包含一个包含完整路径的FileName列，其中包含要导入的文本文件名。

Declare @File Nvarchar(max), @sql Nvarchar(max);

Declare Cur CURSOR LOCAL FAST_FORWARD FOR 
SELECT [FileName]
FROM TxtFiles 

OPEN Cur 

  FETCH NEXT FROM Cur INTO @File  

WHILE (@@FETCH_STATUS = 0)
BEGIN

   TRUNCATE TABLE Textfile_Stagging_table

   SET @Sql = N' BULK INSERT Textfile_Stagging_table 
                 FROM ''' + @File + ''''

   Execute sp_executesql @Sql

   -- Your original query to get data into final destination table
   -- from the Stagging table can go here 

   -- insert into san3parvols(disco, tipo, fecha,totcap, alloc, disp)
   -- Select bla bla bla 
   -- FROM Textfile_Stagging_table

     FETCH NEXT FROM Cur INTO @File  
END

CLOSE Cur 
DEALLOCATE Cur;

如何重复查询另一个表中的每个记录？ SQL Server 2012

1 个答案: