15.7.7.41 SHOW VARIABLES Statement| dev.mysql.com
29.12.14.2 Performance Schema variables_info Table| dev.mysql.com
29.12.14 Performance Schema System Variable Tables| dev.mysql.com
7.1.9.3 Persisted System Variables| dev.mysql.com
System Variable Assignment| dev.mysql.com
7.1.8 Server System Variables| dev.mysql.com
8.2.2 Privileges Provided by MySQL| dev.mysql.com