3208
MySQLERRORNotableDDLHIGH confidence
Incorrect column name
Production Risk
Low — DDL error.
Why it happens
- 1Column name contains invalid characters or exceeds the maximum allowed length.
- 2Column name is an empty string or contains only whitespace.
How to reproduce
trigger — this will error
trigger — this will error
ALTER TABLE t1 ADD COLUMN '' INT;
expected output
ERROR 3208 (HY000): Incorrect column name ''.
Fix
Use a valid column name
Use a valid column name
ALTER TABLE t1 ADD COLUMN valid_name INT;
Why this works
Column names must be non-empty and comply with MySQL identifier rules.
What not to do
✕
Sources
Official documentation ↗
MySQL 8.0 — 3208 ER_WRONG_COLUMN_NAME2
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