Table.SingleRow Function in Power Query
The Table.SingleRow function returns a single row from a table. Returns the single row in the one row table. If the table does not contain exactly one row, an error is raised.
Syntax
 Table.SingleRow(table as table) as record 
Example: The Table.FromRecords functions returns the table.
Power Query M
let
  Source = Table.FromRecords({[CustomerID = 1, Name = "Ashish", Country = "India"]})
in
  Source   The output of the above code is shown below:

The Table.SingleRow function returns the single row from the table as record.
Power Query M
let
  Source = Table.SingleRow(Table.FromRecords({[CustomerID = 1, Name = "Ashish", Country = "India"]}))
in
  Source    The output of the above code is shown below: 
 [CustomerID = 1, Name = "Ashish", Country = "India"] 
