--optimizer-trace

This is a command-line option for the mariadbd & mysqld commands (arg: Required).

In 10.6 ES, 10.6 CS, 10.5 ES, 10.5 CS, 10.4 ES, 10.4 CS, 10.3 ES:

Controls tracing of the Optimizer: optimizer_trace=option=val[,option=val...], where option is one of {enabled} and val is one of {on, off, default}

In 10.3 CS, 10.2 ES, 10.2 CS:

Not present

See also: mariadbd & mysqld for MariaDB Enterprise Server 10.6, in 10.6 CS, in 10.5 ES, in 10.5 CS, in 10.4 ES, in 10.4 CS, in 10.3 ES, in 10.3 CS, in 10.2 ES, and in 10.2 CS