Five level nested statement : Begin End Block « PL SQL « Oracle PL / SQL

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Oracle PL / SQL » PL SQL » Begin End Block 
Five level nested statement
  
SQL>
SQL>
SQL> CREATE TABLE employees
  2  employee_id          number(10)      not null,
  3    last_name            varchar2(50)      not null,
  4    email                varchar2(30),
  5    hire_date            date,
  6    job_id               varchar2(30),
  7    department_id        number(10),
  8    salary               number(6),
  9    manager_id           number(6)
 10  );

Table created.

SQL>
SQL>
SQL> insert into employeesemployee_id, last_name, email, hire_date, job_id, salary,department_id ,manager_id)
  2                values 1001'Lawson', 'lawson@g.com', '01-JAN-2002','MGR', 30000,,1004);

row created.

SQL>
SQL> insert into employeesemployee_id, last_name, email, hire_date, job_id, salary, department_id ,manager_id)
  2                values 1002'Wells', 'wells@g.com', '01-JAN-2002', 'DBA', 20000,21005 );

row created.

SQL>
SQL> insert into employeesemployee_id, last_name, email, hire_date, job_id, salary, department_id ,manager_id)
  2                 values1003'Bliss', 'bliss@g.com', '01-JAN-2002', 'PROG', 24000,,1004);

row created.

SQL>
SQL> insert into employeesemployee_id, last_name, email, hire_date, job_id, salary, department_id, manager_id)
  2                 values1004,  'Kyte', 'tkyte@a.com', SYSDATE-3650'MGR',25000 ,41005);

row created.

SQL>
SQL> insert into employeesemployee_id, last_name, email, hire_date, job_id, salary, department_id, manager_id)
  2                 values1005'Viper', 'sdillon@a .com', SYSDATE, 'PROG', 2000011006);

row created.

SQL>
SQL> insert into employeesemployee_id, last_name, email, hire_date, job_id, salary, department_id,manager_id)
  2                 values1006'Beck', 'clbeck@g.com', SYSDATE, 'PROG', 200002null);

row created.

SQL>
SQL> insert into employeesemployee_id, last_name, email, hire_date, job_id, salary, department_id, manager_id)
  2                 values1007'Java', 'java01@g.com', SYSDATE, 'PROG', 2000031006);

row created.

SQL>
SQL> insert into employeesemployee_id, last_name, email, hire_date, job_id, salary, department_id, manager_id)
  2                 values1008'Oracle', 'oracle1@g.com', SYSDATE, 'DBA', 2000041006);

row created.

SQL>
SQL> select from employees;

EMPLOYEE_ID LAST_NAME                                          EMAIL                          HIRE_DATE JOB_ID                         DEPARTMENT_ID     SALARY MANAGER_ID
----------- -------------------------------------------------- ------------------------------ --------- ------------------------------ ------------- ---------- ----------
       1001 Lawson                                             lawson@g.com                   01-JAN-02 MGR                                        1      30000       1004
       1002 Wells                                              wells@g.com                    01-JAN-02 DBA                                        2      20000       1005
       1003 Bliss                                              bliss@g.com                    01-JAN-02 PROG                                       3      24000       1004
       1004 Kyte                                               tkyte@a.com                    14-JUN-98 MGR                                        4      25000       1005
       1005 Viper                                              sdillon@a .com                 11-JUN-08 PROG                                       1      20000       1006
       1006 Beck                                               clbeck@g.com                   11-JUN-08 PROG                                       2      20000
       1007 Java                                               java01@g.com                   11-JUN-08 PROG                                       3      20000       1006
       1008 Oracle                                             oracle1@g.com                  11-JUN-08 DBA                                        4      20000       1006

rows selected.

SQL>
SQL>
SQL> begin
  2    begin
  3      begin
  4        begin
  5          begin
  6            declare
  7              fname employees.last_name%type;
  8            begin
  9              select last_name
 10                into fname
 11                from employees
 12               where 1=2;
 13            exception
 14              when NO_DATA_FOUND then
 15                dbms_output.put_line('block #6');
 16            end;
 17          exception
 18            when NO_DATA_FOUND then
 19              dbms_output.put_line('block #5');
 20          end;
 21        exception
 22          when NO_DATA_FOUND then
 23            dbms_output.put_line('block #4');
 24        end;
 25      exception
 26        when NO_DATA_FOUND then
 27          dbms_output.put_line('block #3');
 28      end;
 29    exception
 30      when NO_DATA_FOUND then
 31        dbms_output.put_line('block #2');
 32    end;
 33  exception
 34    when NO_DATA_FOUND then
 35      dbms_output.put_line('block #1');
 36  end;
 37  /
block #6

PL/SQL procedure successfully completed.

SQL>
SQL> drop table employees;

Table dropped.

SQL>
SQL>

   
  
Related examples in the same category
1. Three sections - declarative, executable, and exception.
2. An example of an anonymous block
3. Block-Based Development
4. The PL/SQL Block
5. Block Nesting
6. The executable section needs at least one line of code to be valid.
7. no executable code
8. Building Blocks of PL/SQL
9. A Nested Block Example
10. Block with name
11. Outer Block name and inner block name
12. This script demonstrates the structure of a block
13. Nested block
14. Plain SQL and PL/SQL program
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