SELECT FOR UPDATE in SQL: how it works and why to use it

Description

What is SELECT FOR UPDATE in SQL, what benefits does it have, and when might you want to use it? Let's take a look at how SELECT FOR UPDATE can help with transaction processing in SQL databases. SELECT FOR UPDATE is a SQL command that’s useful in the context of transactional workloads. It allows you to “lock” the rows returned by a SELECT query until the entire transaction that query is part of has been committed. Other transactions attempting to access those rows are placed into a time-based queue to wait, and are executed chronologically after the first transaction is completed. SELECT FOR UPDATE in SQL: how it works and why to use it 0:00 Intro 0:16 What is SELECT FOR UPDATE? 0:26 Example transaction without SELECT FOR UPDATE 1:30 Example transaction with SELECT FOR UPDATE 1:54 SELECT FOR SHARE 2:07 Some databases don't support SELECT FOR UPDATE 2:24 Situations for using SELECT FOR UPDATE Additional Resources: 🔍 What is SELECT FOR UPDATE in SQL (with examples)? https://cockroa.ch/3tbsHlb ☁️ Get started with CockroachDB in minutes: https://cockroa.ch/4bHdklT Follow Cockroach Labs ✔️ Website: https://cockroachlabs.com/ ✔️ Twitter (X): https://twitter.com/CockroachDB ✔️ Linkedin: https://www.linkedin.com/company/cockroach-labs ✔️ Facebook: https://www.facebook.com/cockroachlabs ✔️ Instagram: instagram.com/cockroachdb ✔️ Threads: https://www.threads.net/@cockroachdb #learnsql #sqlforbeginners #sqlcommands