runtime_filter_type

Description

The runtime_filter_type variable specifies the type of runtime filter for a tenant.

Privilege requirements

• Query variables

  • Global level

    The sys tenant and all user tenants can execute the SHOW VARIABLES statement or view the SYS.TENANT_VIRTUAL_GLOBAL_VARIABLE view (Oracle mode) or the information_schema.GLOBAL_VARIABLES view (MySQL mode) to view the value of a global system variable.

  • Session level

    The sys tenant and all user tenants can execute the SHOW VARIABLES statement or view the SYS.TENANT_VIRTUAL_SESSION_VARIABLE view (Oracle mode) or the information_schema.SESSION_VARIABLES view (MySQL mode) to view the value of a session system variable.

• Modify variables

  • Set the variable at the global level

    • The sys tenant can directly modify the value of a global system variable.

    • MySQL user tenants must have the SUPER or ALTER SYSTEM privilege to modify the value of a global system variable.

    • For V4.x, Oracle user tenants must have the ALTER SYSTEM privilege to modify the value of a global system variable starting from V4.2.0.

  • Set the variable at the session level

    The sys tenant and all user tenants can directly modify the value of a session system variable in the current tenant.

Attributes

Examples

set runtime_filter_type = 'range,in,bloom_filter';

set global runtime_filter_type = 'range';

set runtime_filter_type = '';