sql_warnings

Description

sql_warnings is used to control whether an information string is generated when a warning occurs during a single-row INSERT statement.

Privilege requirements

• Query variables

  • Global level

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

  • Session level

    The sys tenant and all user tenants can execute the SHOW VARIABLES statement or query SYS.TENANT_VIRTUAL_SESSION_VARIABLE (Oracle-compatible mode) or information_schema.SESSION_VARIABLES (MySQL-compatible mode) to query 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, starting from V4.2.0, Oracle user tenants must have the ALTER SYSTEM privilege to modify the value of a global system variable.

  • 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 single-row INSERT statements to not generate an information string when a warning occurs.

• Session level

  obclient> SET sql_warnings= OFF;
  

• Global level

  obclient> SET GLOBAL sql_warnings= OFF;