Table.StopFolding
Prevents any subsequent processes from altering the original data source in the table.
Retrieves information from a SQL table in a manner that blocks subsequent operations from executing as a query on the SQL server.
Usage:
Power Query Mlet
Source = Sql.Database("SomeSQLServer", "MyDb"),
MyTable = Source{[Item="MyTable"]}[Data],
MyLocalTable = Table.StopFolding(dbo_MyTable) in
MyLocalTable Output table