Splitter.SplitByNothing Function in Power Query
The Splitter.SplitByNothing function in Power Query returns a function that does no splitting, returning its argument as a single element list.
Syntax
 Splitter.SplitByNothing() as function 
 Purpose  The function returns a function that takes an input (e.g., text, number, or list) and wraps it in a single-element list without performing any splitting. This is useful when you want to override default splitting behavior in Power Query transformations, such as when working with Table.FromList or  Table.SplitColumn. 
Example: Splitting Using Splitter.SplitByNothing() with Table.SplitColumn.
Power Query M
let
  Source = Table.FromRecords(
    {
      [Data = "1-Ashish-568"], 
      [Data = "2-Katrina-855"], 
      [Data = "3-Alia-380"], 
      [Data = "4-Vicky-458"], 
      [Data = "5-Mohini-278"], 
      [Data = "6-Meenakshi-289"], 
      [Data = "7-Esha-875"], 
      [Data = "8-Anjali-380"]
    }
  ), 
  return = Table.SplitColumn(Source, "Data", Splitter.SplitByNothing(), {"Combined"})
in
  return     The output of the above code is shown below:
| Combined | 
|---|
| 1-Ashish-568 | 
| 2-Katrina-855 | 
| 3-Alia-380 | 
| 4-Vicky-458 | 
| 5-Mohini-278 | 
| 6-Meenakshi-289 | 
| 7-Esha-875 | 
| 8-Anjali-380 | 
Example: Creating a Table from a List Using Splitter.SplitByNothing().
Power Query M
let
    // Step 1: Create a list of values
    MyList = {1, 2, 3},
    // Step 2: Convert the list to a table
    MyTable = Table.FromList(
        MyList, 
        Splitter.SplitByNothing(), 
        {"Numbers"} // Optional column name
    )
in
    MyTable    The output of the above code is shown below:
| Numbers | 
|---|
| 1 | 
| 2 | 
| 3 |