Use for loop to loop through result from a select statement : For Loop « PL SQL « Oracle PL / SQL






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

Use for loop to loop through result from a select statement

    
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> -- prepare data
SQL> insert into emp(ID,  fname, lname, Start_Date,                     End_Date
,                       Salary,  City,       Description)
  2               values ('01','Jason',    'Martin',  to_date('19960725','YYYYMM
DD'), 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','YYYYMM
DD'), to_date('19860221','YYYYMMDD'), 6661.78, 'Vancouver','Tester')
  3  /

1 row created.

SQL> insert into emp(ID,  fname, lname, Start_Date,                     End_Date
,                       Salary,  City,       Description)
  2                values('03','James',    'Smith',   to_date('19781212','YYYYMM
DD'), to_date('19900315','YYYYMMDD'), 6544.78, 'Vancouver','Tester')
  3  /

1 row created.

SQL> insert into emp(ID,  fname, lname, Start_Date,                     End_Date
,                       Salary,  City,       Description)
  2                values('04','Celia',    'Rice',    to_date('19821024','YYYYMM
DD'), to_date('19990421','YYYYMMDD'), 2344.78, 'Vancouver','Manager')
  3  /

1 row created.

SQL> insert into emp(ID,  fname, lname, Start_Date,                     End_Date
,                       Salary,  City,       Description)
  2                values('05','Robert',   'Black',   to_date('19840115','YYYYMM
DD'), to_date('19980808','YYYYMMDD'), 2334.78, 'Vancouver','Tester')
  3  /

1 row created.

SQL> insert into emp(ID,  fname, lname, Start_Date,                     End_Date
,                       Salary, City,        Description)
  2                values('06','Linda',    'Green',   to_date('19870730','YYYYMM
DD'), to_date('19960104','YYYYMMDD'), 4322.78,'New York',  'Tester')
  3  /

1 row created.

SQL> insert into emp(ID,  fname, lname, Start_Date,                     End_Date
,                       Salary, City,        Description)
  2                values('07','David',    'Larry',   to_date('19901231','YYYYMM
DD'), to_date('19980212','YYYYMMDD'), 7897.78,'New York',  'Manager')
  3  /

1 row created.

SQL> insert into emp(ID,  fname, lname, Start_Date,                     End_Date
,                       Salary, City,        Description)
  2                values('08','James',    'Cat',     to_date('19960917','YYYYMM
DD'), to_date('20020415','YYYYMMDD'), 1232.78,'Vancouver', 'Tester')
  3  /

1 row created.



SQL>
SQL>
SQL> CREATE OR REPLACE PROCEDURE looping_example IS
  2     i   NUMBER := 0;
  3  BEGIN
  4     FOR rec IN (SELECT * FROM emp)
  5     LOOP
  6        i := i + 1;
  7        DBMS_OUTPUT.put_line ('Record ' || i || ' is emp ' || rec.fname);
  8     END LOOP;
  9
 10     DBMS_OUTPUT.put_line ('Procedure Looping Example is done');
 11  END;
 12  /

Procedure created.

SQL> show errors
No errors.
SQL>

SQL>
SQL> drop table emp;

Table dropped.

SQL>








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