Postgres, MVCC, and you or, Why COUNT(*) is slow (David Wolever)

[@MuhammadDaif]

I think my life has slightly changed to the better after watching this :D Thank you !

[@SteveSand]

Great presentation David, very understandable.

[@nicholaslipanovich827]

This was really informative, thanks David!

[@kobi683]

This is a great and informative lecture!

[@dengan699]

Introduction level talk..

[@calvinchankf]

david thanks for your presentation.....however if i really need to count the total number of rows of a table which has over 10 million records, what should i do?

[@alexanderroussakov2263]

maintain it as single value in another table ;)

[@Adaetro]

If you semi recently performed "analyze" you probably have count number saved somewhere in statistics of that table

[@sarvarnishonboyev4233]

Thank you for awesome presentations, it was really useful and informative.

[@faraazali9589]

Dude great explanation! 👍

[@scotteza]

This is a great talk, thanks for posting it!

[@CosmeJunior]

Amazing video, must watch again

[@Soham_Badjate]

great session!!

[@rpbhagato]

excellent presentation.

[@kacy6014]

Great breakdown

[@bobslave7063]

best explanation ever!

[@ai__76]

This was really informative... The sound and picture were not synced!

[@cschandragiri]

Amazing explaination

[@alexandershchegretsov9615]

I love it, thanx man, it was interesting

[@Patilsfact786]

Great informative

[@jaskaranbindra9939]

cool

[@been2082]

From the video blog.sentry.io/2015/07/23/transaction-id-wraparound-in-postgres.html