Tag: databases

Questions Related to databases

  1. update KCRT_REQUEST_DETAILS reqd set reqd.visible_parameter41 = (select reqd1.visible_parameter31 from kcrt_request_details reqd1 where reqd1.batch_number= '2' and reqd1.request_id = reqd.request_id) where reqd.batch_number ='3' and reqd.request_id in (se

  2. Update KCRT_REQUEST_DETAILS set visible_parameter41 = (select visible_parameter31 from KCRT_REQUEST_DETAILS where batch_number =2) where request_type_id = (select request_type_id from KCRT_REQUEST_TYPES where request_type_name = ‘AXA_RT_Application_Demand

  3. Update KCRT_REQUEST_DETAILS set visible_parameter41 = (select visible_parameter31 from KCRT_REQUEST_DETAILS where batch_number =2) where batch_number = 3 and request_type_id = (select request_type_id from KCRT_REQUEST_TYPES where request_type_name = ‘AXA_

  4. Update KCRT_REQUEST_DETAILS set visible_parameter41 = (select visible_parameter31 from KCRT_REQUEST_DETAILS where batch_number =2 and and request_type_id = (select request_type_id from KCRT_REQUEST_TYPES where request_type_name = ‘AXA_RT_Application_Deman


Correct Option: A
  1. SELECT to_char(visible_parameter41,’yyyy-mm-dd hh24:mi:ss’) from KCRT_REQUEST_DETAILS where request_id = 31301 and batch_number = ‘1’;

  2. SELECT to_date(visible_parameter41) from KCRT_REQUEST_DETAILS where request_id = 31301 and batch_number = ‘1’;

  3. SELECT to_date(visible_parameter41, ‘mm-dd-yyyy hh24:mi:ss’) from KCRT_REQUEST_DETAILS where request_id = 31301 and batch_number = ‘1’;

  4. SELECT to_date(visible_parameter41,’yyyy-mm-dd hh24:mi:ss’) from KCRT_REQUEST_DETAILS where request_id = 31301 and batch_number = ‘1’;


Correct Option: D
  1. Delete from employees where employee_id = (select employee_id from employees);

  2. Delete * from employees where employee_id = (select employee_id from new_employees);

  3. Delete from employees where employee_id in (select employee_id from new_employees where name = 'Carrey');

  4. Delete * from Employees where employee_id in (select employee_id from new_employees where last_name = 'Carrey');


Correct Option: C
  1. Use the specified table as the "Last" table in the join

  2. Use the specified table as the "Log" table in the join

  3. Use the specified table as the "Driving" table in the join

  4. Use the query as the "First" query in the set.


Correct Option: C
  1. select * from utlxplan;

  2. select * from plan_table;

  3. select plan from plan_table;

  4. select * from table(dbms_xplan.display);


Correct Option: B,D