Which approach is best to retrieve 2 billions records at once with out any search criteria?

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which approach is best to retrieve 2 billions records at once with out any search criteria?
Connection less approach/ connection oriented.

for example

select * from orders

What I have tried:

which approach is best to retrieve 2 billions records at once with out any search criteria?
Connection less approach/ connection oriented.

for example

select * from orders

Posted 18-Sep-16 7:03am

awaisshabir

Updated 18-Sep-16 10:07am

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Patrice T 18-Sep-16 13:12pm

You should tell what you want to do with it.

awaisshabir 18-Sep-16 16:01pm

this is my interview Question that's why i am asking.

Wendelius 18-Sep-16 13:13pm

Why fetch all of them?

awaisshabir 18-Sep-16 16:01pm

this is my interview Question that's why i am asking.

[no name] 18-Sep-16 13:14pm

You should use the "don't do this at all" approach.

Patrice T 18-Sep-16 14:08pm

++

Karthik_Mahalingam 18-Sep-16 13:48pm

where do you display all those?

awaisshabir 18-Sep-16 16:02pm

in the window application

Karthik_Mahalingam 19-Sep-16 0:46am

but the gridview will not work for 10b records. your app will hang.

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Maciej Los · Answer 1 · 2016-09-18T07:41:00

Solution 1

Do not fetch 1 bilion records at once!

Please, read this: retrieve millions record from SQL server in seconds[^]

Posted 18-Sep-16 7:41am

Maciej Los

Wendelius · Answer 2 · 2016-09-18T10:07:00

You said that this is an interview question. If the scenario is to show the records, then the question doesn't make sense. Who would go through all the records or even want to see them in a list...

Even though it would be possible to fetch the records for processing it isn't feasible to fetch them for viewing. So as far as I can see, there is no reasonable approach.