Add Run Statements In A Transaction as a MySQL TIL

mysql/run-statements-in-a-transaction.md

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+# Run Statements In A Transaction
+
+I'm connecting to a production MySQL database to make some changes to a
+specific user account. That means I am going to run an `update` statement and I
+expect that statement to affect exactly *one* row in the `users` table.
+
+If I run the `update` statement in a transaction, then I can verify all looks
+good before committing those changes. And importantly, I can rollback the
+changes if anything looks off.
+
+```sql
+> start transaction;
+
+> update users set roles = 'admin' where id = '1234';
+Query ok, 1 row affected
+
+> select * from users where id = '1234';
+-- check that all looks good
+
+> commit;
+```
+
+In the above case, all looked good, so I ran `commit`. If more rows than I
+expected were affected or the changed record didn't look right, I could instead
+`rollback`. None of those changes would make it into live production data.
+
+[source](https://dev.mysql.com/doc/refman/8.0/en/commit.html)