Configuration of the Flat File Connection Manager When you open the Flat File Source dialog box, the Flat File source provides an option to synchronize the column metadata. If you update column lengths in the Flat File connection manager after you have added and configured the Flat File source that uses the connection manager, you do not have to manually resize the output columns in the Flat File source. To modify the length of output columns, you set the Length property of the output column on the Input and Output Properties tab in the Advanced Editor dialog box. To avoid errors or truncation, you can resize the columns to be compatible with the destination columns in the Flat File connection manager, the Flat File source, or a transformation. Moreover, at run time, errors may occur due to data truncation. If these string columns map to destination columns that are narrower, warnings appear in the user interface. Also, unless you subsequently resize the column length in a Flat File source or a transformation, the column length of string column remains the same throughout the data flow. In the Flat File Connection Manager Editor dialog box, you can evaluate sample data and automatically resize the length of these columns to prevent truncation of data or excess column width. Column Lengthīy default, the Flat File connection manager sets the length of string columns to 50 characters. For more information, see Multiple Flat Files Connection Manager. To reference multiple files, use a Multiple Flat Files connection manager instead of a Flat File connection manager. The Flat File connection manager can access only one file. For example, the Flat File source and destination can use Flat File connection managers to extract and load data. SSIS Integration Runtime in Azure Data FactoryĪ Flat File connection manager enables a package to access data in a flat file.
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