Sorting a table variable within DAX

Hi Icey, would be good to do so in case I'm 100% sure that _Table1 is already sorted, but it's not a case. It depends on the dataset (which is updating on daily basis). To avoid any mistake I want to force data in _Table1 to be sorted.
Basically, my question is how to modify a variable (in this case _Table1) without creating another variable? I want to achieve something like the code below:

TestTable = 
...//some previous steps in DAX measure

//Initialize a variable _Table1
VAR _Table1 = SUMMARIZE(                                        
                    FILTER(
                            ALL(ProductTable);
                            AND(ProductTable[U_LOCAL_ITEM] IN _SKU; AND(ProductTable[*STARTDATE] >=_MinDate; RELATED(LOC[*LOC]) in _LOC) )
                        );
                    ProductTable[*STARTDATE];
                    "FrcstTemp";
                    SUM(ProductTable[Forecast]);
                    "DateTemp";
                    ProductTable[*STARTDATE]
                )

//modify _Table1 variable without creating a new one (i.e. _Table2 from my initial post)
_Table1 = SAMPLE(
              COUNTROWS(_Table1);
              _Table1;
              ProductTable[*STARTDATE];
              ASC
          )
               
... //next steps in DAX measure
Return //some result

But, as you can imagine, it doesn't work...