This statement is used to display Doris system variables, which can be queried by conditions
SHOW [GLOBAL | SESSION] VARIABLES
[LIKE 'pattern' | WHERE expr]
- 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.
- Use the like statement to match with variable_name.
- The % percent wildcard can be used anywhere in the matching pattern
The default here is to match the Variable_name, here is the exact match
show variables like 'max_connections';
Matching through the percent sign (%) wildcard can match multiple items
show variables like '%connec%';
Use the Where clause for matching queries
show variables where variable_name = 'version';