cte_max_recursion_depth

Description

cte_max_recursion_depth specifies the maximum recursion depth of a common table expression (CTE). The server terminates the execution of any CTE that exceeds this value.

Privilege requirements

• Query variables

  • Global level

    sys tenants and all user tenants can execute the SHOW VARIABLES statement or query the information_schema.GLOBAL_VARIABLES view (MySQL-compatible mode) to view the value of a global system variable.

  • Session level

    sys tenants and all user tenants can execute the SHOW VARIABLES statement or query the information_schema.SESSION_VARIABLES view (MySQL-compatible mode) to view the value of a session system variable.

• Modify variables

  • Global level

    • sys tenants 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.

  • Session level

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

Attributes

Examples

Set the maximum recursion depth of a common table expression (CTE) to 1000.

• Global level

  obclient> SET GLOBAL cte_max_recursion_depth = 1000;
  

• Session level

  obclient> SET cte_max_recursion_depth =1000;