This statement is used to display Doris system variables, which can be queried by conditions

    illustrate:

    • show variables is mainly used to view the values of system variables.
    • Executing the SHOW VARIABLES command does not require any privileges, it only requires being able to connect to the server.
    • The % percent wildcard can be used anywhere in the matching pattern

    2. Matching through the percent sign (%) wildcard can match multiple items