From 612a332646fc431eafbad8cc96ee7c4a6a1b4a93 Mon Sep 17 00:00:00 2001 From: Matt Huntington Date: Thu, 14 Dec 2023 12:37:14 -0800 Subject: [PATCH] better lock example --- SQL/lessons/sql_3.md | 3 +-- 1 file changed, 1 insertion(+), 2 deletions(-) diff --git a/SQL/lessons/sql_3.md b/SQL/lessons/sql_3.md index a28a173..98492d3 100644 --- a/SQL/lessons/sql_3.md +++ b/SQL/lessons/sql_3.md @@ -291,8 +291,7 @@ Locks are a great way to make sure nobody messes with your data until after all ```sql BEGIN; -LOCK TABLE people IN ROW EXCLUSIVE MODE; -SELECT * FROM people WHERE id = 12 FOR UPDATE; +LOCK TABLE people; -- start a new session and run UPDATE people SET name = 'Matt' WHERE id = 12; -- switch back to original session