Insert into emp2 select * from emp1....data copy hi to karna hai select * into... Will create new table and then data copying... Tables already hai to create kyu karna
For optimization, it does not immediately run the transformation instead it creates a DAG with all transformation and optimize it by creating logical plan/physical plan and applying optimization techniques like catalyst optimization, column pruning, predicate pushdown to come to the best and lowest costing physical plan
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Hm v wait kr rhe bro
Insert into emp2 select * from emp1....data copy hi to karna hai select * into... Will create new table and then data copying... Tables already hai to create kyu karna
select column_list
into new_table_name
from old_table
Python ke remaining videos kab tak Aayenge?
Insert INTO emp2
Select * from emp1;
What is the answer to the last question - 'When we align transformations and action in a DAG, what is that graph called?'
Lineage graph - which specifically create the graph of RDDs or Dataframes like which RDD came from which one like that.
Can you tell me how good trendy tech submit Mittal is how deep it is. I'm willing to go through the course but I want to know how much it is
31:37 what is the answer to this questuin? It is not clear what the candidate say.
For optimization, it does not immediately run the transformation instead it creates a DAG with all transformation and optimize it by creating logical plan/physical plan and applying optimization techniques like catalyst optimization, column pruning, predicate pushdown to come to the best and lowest costing physical plan