Nested joins in Teradata - response (3) by drmkd17

Thanks Raja.
Thanks Khurram.
Please validate my understanding for the other joins as well.
Merge Join : PI-PI join is on the same AMP. Hence no redistribution
                     PI -Non PI join: Non PI column redistributed temporarily in spool.
                     Non PI - NON PI join: Both are redistributed temporarily in spool.
                     Small Table- Large Table : Samll table duplicated in spool and copied on all AMPS
 
HAsh join: Same as merge join case 4. but small table copied in the AMP memory.
 
Nested join: Happens on USI/PI column and when this column is equated to a constant.
so when optimizer comes across this scenario it will go for a nested join
is that right?
 
Thanks for your help