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You can create a dataset from one or more files stored in ADLS.

Wildcards:

You can parameterize your input paths to import source files as part of the same imported dataset. For more information, see Overview of Parameterization. 

Folder selection:

When you select a folder in ADLS to create your dataset, you select all files in the folder to be included. Notes:

• This option selects all files in all sub-folders. If your sub-folders contain separate datasets, you should be more specific in your folder selection.
• All files used in a single dataset must be of the same format and have the same structure. For example, you cannot mix and match CSV and JSON files if you are reading from a single directory. 
• When a folder is selected from ADLS, the following file types are ignored:
  
  • *_SUCCESS and *_FAILED files, which may be present if the folder has been populated by HDI.
  • If you have stored files in ADLS that begin with an underscore (_), these files cannot be read during batch transformation and are ignored. Please rename these files through ADLS so that they do not begin with an underscore. 

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