Importing Excel 2007 File to sqlserver2005 with ssis

本文介绍如何使用SQL Server Integration Services (SSIS) 导入和导出Excel 2007文件。由于Excel 2007版本的特殊性,通常的数据流控件无法直接支持。文中详细解释了通过配置OLE DB源来实现这一目标的方法,并说明了在SQL Server 2008中这一过程变得更加简单。
  

SSIS and Excel 2007

Introduction

Importing Excel files into SQL Server database is a common task needs to carry out by the DBAs and developers. Also, in case of data warehouse, you need to extract data from various data sources. Most of the times, Excel is one of the data sources.

As you are aware, importing and exporting data from and to the Excel is simple. it is just a matter of drag and drop few data flow controls and configuring them according to your need.

Importing Excel 2007 File

If you are asked to import an Excel file, you can use Excel Source from the Data Flow Sources in SQL Server Integration Services (SSIS) and select correct version from the available list.

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You can see that you can only import Excel files up to Microsoft Excel 97-2005 version, which means that you are not allow to import Excel 2007 files from the above control.

However, if you follow below steps, you can import Excel 2007 files into the SQL Server.

1. Drag and drop OLE DB Source data flow source to the data flow task.

2. Double click the OLE DB Source and click New button for OLE DB Connection Manager.

3. Click New button in the Configure OLE DB Connection Manager screen.

4. Select Native OLE DB/Microsoft Office 12.0 Access Database Engine OLE DB Provider from the OLE DB Provider list.

5. Select All option and at the Extended Properties enter Excel 12.0. After this you will see a screen like following image.

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You can see the selected provider at the top of the screen.

6. Enter the file name with full path and make sure you have the extension xlsx.

7. After clicking OK button, you will be taken to the initial screen, in which you have to select the worksheet you want.

Exporting to Excel 2007 File

There is no different when exporting to Excel file. it is again you have to modify the destination connection as above.

SQL Server 2008

Though things are difficult in SQL Server 2005, things have become easy with SQL Server 2008. In SQL Server 2008, you simply need to select the Excel 2007 from the drop down.

Like import, you can use same way to export data to Excel 2007 by using Excel destination in SQL Server 2008.

By Dinesh Asanka, 2008/10/24

### Overview of Using SQL to Query or Manipulate Excel Files Excel can be treated as a data source for SQL queries when used in conjunction with database systems or specific tools that support this functionality. This approach is particularly useful when integrating Excel data into database workflows or performing complex data manipulation tasks using SQL syntax. To interact with Excel files using SQL, several methods can be employed depending on the environment and tools available. One common approach involves using SQL Server or other relational database management systems (RDBMS) that support external data sources. In such cases, Excel files can be linked to the database, allowing SQL queries to read from or write to Excel worksheets as if they were database tables [^2]. ### Connecting to Excel via SQL Server SQL Server provides the ability to connect to Excel files using the `OPENROWSET` or `OPENDATASOURCE` functions, which allow ad hoc connections to external data sources. For example, a simple query to select data from an Excel worksheet might look like this: ```sql SELECT * FROM OPENROWSET('Microsoft.ACE.OLEDB.12.0', 'Excel 12.0;Database=C:\Path\To\Your\File.xlsx', [Sheet1$]); ``` In this query, `Microsoft.ACE.OLEDB.12.0` is the provider used to access the Excel file, and `Sheet1$` refers to the first worksheet in the Excel file. It's important to note that the path to the Excel file must be accessible to the SQL Server instance, and appropriate permissions must be in place [^2]. ### Importing Data from Excel to SQL Server Data from Excel can also be imported into SQL Server using the Import and Export Wizard, which is a built-in tool in SQL Server Management Studio (SSMS). This wizard guides users through the process of selecting a data source (in this case, an Excel file), specifying the destination (a SQL Server database), and mapping columns between the source and destination. This method is particularly useful for one-time imports or for users who prefer a graphical interface over writing SQL scripts [^2]. ### Exporting Data from SQL Server to Excel Exporting data from SQL Server to Excel can be achieved in a similar manner. The Export Wizard can be used to select the source data from SQL Server and specify the Excel file as the destination. Alternatively, T-SQL commands such as `bcp` (Bulk Copy Program) or `INSERT INTO ... SELECT` statements can be utilized to export data directly to an Excel file. For example: ```sql EXEC xp_cmdshell 'bcp "SELECT * FROM YourDatabase.dbo.YourTable" queryout "C:\Path\To\Your\OutputFile.xlsx" -c -T -S YourServerName'; ``` This command uses the `bcp` utility to export the results of a SQL query to an Excel file. The `-c` option specifies character data type, `-T` uses trusted connection authentication, and `-S` specifies the server name [^2]. ### Using VBA to Execute SQL Queries on Excel For those working within Excel itself, Visual Basic for Applications (VBA) can be used to execute SQL queries against Excel worksheets. This is done by connecting to the Excel workbook using ADO (ActiveX Data Objects) and executing SQL commands against the workbook. Here's an example of how to retrieve data from an Excel worksheet using ADO and SQL: ```vba Dim conn As Object Dim rs As Object Dim sql As String Set conn = CreateObject("ADODB.Connection") Set rs = CreateObject("ADODB.Recordset") conn.Open "Provider=Microsoft.ACE.OLEDB.12.0;Data Source=C:\Path\To\Your\File.xlsx;Extended Properties=Excel 12.0;" sql = "SELECT * FROM [Sheet1$]" rs.Open sql, conn ' Do something with the recordset... rs.Close conn.Close ``` This VBA code snippet demonstrates how to open a connection to an Excel file, execute a SQL query to select all records from a specific worksheet, and then process the results . ### Considerations and Limitations When using SQL to interact with Excel files, there are several considerations and limitations to keep in mind. These include: - **Data Types**: Excel does not enforce strict data types, which can lead to issues when importing data into SQL Server. Careful attention should be paid to ensure that data types are correctly mapped during the import process. - **Performance**: Large Excel files can be slow to process, especially when using SQL Server to query them directly. Performance can be improved by filtering data at the source or by importing the data into a staging table in SQL Server before further processing. - **Security**: When using features like `xp_cmdshell` or `OPENROWSET`, security implications should be considered. These features can pose a risk if not properly configured and monitored. By understanding these methods and their associated considerations, developers and database administrators can effectively leverage SQL to work with Excel files, enhancing data manipulation capabilities and streamlining data integration processes .
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