3413
MariaDBWARNINGCriticalAccess ControlHIGH confidence
User account renamed to deprecated form
Production Risk
Low — informational warning only; account is created.
How to reproduce
trigger — this will error
trigger — this will error
CREATE USER 'oldstyle_user';
expected output
Warning 3413: User name normalized to deprecated form.
Fix
Use fully qualified username@hostname
Use fully qualified username@hostname
CREATE USER 'user'@'localhost'; CREATE USER 'user'@'%';
Why this works
Explicit host part avoids ambiguity and future compatibility issues.
What not to do
✕
Sources
Official documentation ↗
MySQL 8.0 — 3413 ER_WARN_RENAMED_USER_TO_DEPRECATED_FORM
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