I have a column called Parm_Id and i would like to get the quantiles for each value (Amt Column)
Is it possible to use the function with partition ? There is any other way ?
QUANTILE(100,Amt) OVER(PARTITION BY Param_Id)
QUANTILE is an old deprecated Teradata function, PARTITON was added later to Windowed Aggregates.
Those old funtions use GROUP BY instead of PARTITON:
SELECT ... QUANTILE(100,Amt) FROM ... GROUP BY Param_Id
But as you can't mix old & new style functions in the same Select you better rewrite it:
(RANK() OVER (PARTITION BY Param_id ORDER BY Amt) - 1) * 100 / COUNT(*) OVER()