Loop till count(*) : For Loop « PL SQL « Oracle PL / SQL






  1. Oracle PL / SQL
  2. PL SQL
  3. For Loop

Loop till count(*)

    

SQL> -- create demo table
SQL> create table emp(
  2    ID                 VARCHAR2(4 BYTE)         NOT NULL,
  3    fname         VARCHAR2(10 BYTE),
  4    lname          VARCHAR2(10 BYTE),
  5    Start_Date         DATE,
  6    End_Date           DATE,
  7    Salary             Number(8,2),
  8    City               VARCHAR2(10 BYTE),
  9    Description        VARCHAR2(15 BYTE)
 10  )
 11  /

Table created.

SQL>
SQL>
SQL>
SQL> -- prepare data
SQL> insert into emp(ID,  fname, lname, Start_Date,                     End_Date,                       Salary,  City,       Description)
  2               values ('01','Jason',    'Martin',  to_date('19960725','YYYYMMDD'), to_date('20060725','YYYYMMDD'), 1234.56, 'Toronto',  'Programmer')
  3  /

1 row created.

SQL> insert into emp(ID,  fname, lname, Start_Date,                     End_Date,                       Salary,  City,       Description)
  2                values('02','Alison',   'Mathews', to_date('19760321','YYYYMMDD'), to_date('19860221','YYYYMMDD'), 6661.78, 'Vancouver','Tester')
  3  /

1 row created.


SQL>
SQL>
SQL>   declare
  2       empCount number;
  3       i           number;
  4    begin
  5       select count(*) into empCount from emp;
  6
  7       FOR i IN 1 .. empCount  LOOP
  8          dbms_output.put_line('emp ' || i);
  9       END LOOP;
 10   end;
 11  /
emp 1
emp 2

PL/SQL procedure successfully completed.

SQL>
SQL> drop table emp;

Table dropped.

SQL>
SQL>








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