How to fetch the next records from a table in sql database one after other

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I am developing an application where I need to send the Emails to all the users in the table. Since the number of users is in millions, so to select all the users at once won’t do any good. Is there any way I can send emails in a group of 20 or 30 users so that the next time it will select the next 20 users dynamically and send emails. Any help will be appreciated.

Posted 12-Apr-13 21:48pm

waris kantroo 1

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Abhinav S · Answer 1 · 2013-04-12T21:58:00

Solution 1

It will not be optimal for you to fetch records in groups of 30 from the database. To optimize this connection and network overhead, get all data using a single query. Put this data in a DataTable.

Loop through groups of 30 in the DataTable, get the email ids and send mails before proceeding with the next 30.

Posted 12-Apr-13 21:58pm

Abhinav S

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Nandakishore G N 13-Apr-13 4:56am

good answer...abhinav..my 5!