MySQL Error Message
Unable to create or change a table without a primary key,
when the system variable ‘sql_require_primary_key’ is set. Add a
primary key to the table or unset this variable to avoid this
message. Note that tables without a primary key can cause
performance problems in row-based replication, so please consult
your DBA before changing this setting.
Reason for the Error
ER_TABLE_WITHOUT_PK was added in
8.0.13.
