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  • You cannot create datasets with parameters from uploaded data.
  • You cannot create dataset with parameters from multiple file types.
    • File extensions can be parameterized. Mixing of file types (e.g. TXT and CSV) only works if they are processed in an identical manner, which is rare.
    • You cannot create parameters across text and binary file types.
  • You cannot apply parameters to write or publishing operations.
  • Parameter and variable names can be up to 255 characters in length.
  • For regular expression patterns, the following reference types are not supported due to the length of time to evaluate:
    • Backreferences. The following example matches on axabxb, and cxc yet generates an error:

      Code Block
      ([a-c])x\1


    • Lookahead assertions: The following example matches on a, but only when it is part of an ab pattern. It generates an error:

      Code Block
      a(?=b)


  • For some source file types, such as Parquet, the schemas between source files must match exactly.

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