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A comment on Things I wished more developers knew about databases. Parent comment

Re:Things I wished more developers knew about databases by fendy3002 on Thursday April 23, 2020 @07:55AM (#22954986)
Does it means the report take the tables hostage for 30+ minutes? How can transactional consistency be achieved without write lock? Temporary table?
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Re:Things I wished more developers knew about databases by CodesInChaos on Thursday April 23, 2020 @12:24PM (#22957678)
Reporting can typically be split into two transactions. One long-running readonly transaction with snapshot consistency obtaining the data for the report and a separate transaction which publishes the result.
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Re:Things I wished more developers knew about databases by blattimwind on Thursday April 23, 2020 @08:10AM (#22955060)
MVCC.
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