sql_session_stmt

sql_session_stmt 
      ::= 
      set_catalog_stmt 
      | set_schema_stmt 
      | set_names_stmt 
      | set_session_author_id_stmt 
      | set_local_time_zone_stmt 

[rule list]
This rule is called by

-> directly_exec_stmt -> prep_sql_session_stmt -> sql_procedure_stmt