How Can I Import Multiple Text Files with Identical Schemas and Names from Different Directories into SQL Server 2008 Using SSIS?

Importing Text Files with Similar Schemas and File Names from Different Directories

Importing multiple text files with identical names and schemas into a single table in SQL Server 2008 can be achieved using SSIS.

Using a Foreach File Container with Subfolder Traverse

1. Add a Foreach File Container to your SSIS package.
2. Enable the "Traverse Subfolder" option.
3. Set the "Directory" property of the container to the root directory of the text files.
4. Specify a wild-card file specification, such as "*.txt", in the "FileSpec" property.

Setting the ConnectionString Dynamically

Within each loop of the Foreach File Container:

1. Create a Variable to store the current file path (e.g., @[User::CurrentFileName]).
2. Use an Expression to dynamically assign the Variable value to the "ConnectionString" property of the Flat File Connection Manager.
3. This will ensure that the connection manager uses the correct text file for each iteration.

Data Import Configuration

1. Create a data flow task within the container.
2. Add a Flat File Source, connecting it to the adjusted Flat File Connection Manager.
3. Include any transformations or destinations as necessary.

Example Walkthrough

Here's an example package that demonstrates this approach:

Create a For Each File Loop task:

Set the Directory property to the root of the file hierarchy (C:ssisdatasoTEST).

Enable Process Subfolders.

Set the FileSpec property to a wildcard filter (*.txt).

Within the For Each File Loop task, create a Data Flow task:

Add a Flat File Source component and connect it to the Flat File Connection Manager.

Set an Expression on the Flat File Source's ConnectionString property to use the @[User::CurrentFileName] variable.

Add a RowCount component to count the rows processed from the file.

Add an OLE DB Destination component to load the data into the database table.

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