Use cursor to do full table scan : Cursor Value « Cursor « Oracle PL / SQL

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Oracle PL / SQL » Cursor » Cursor Value 
Use cursor to do full table scan
    
SQL> CREATE TABLE emp (
  2    id         NUMBER PRIMARY KEY,
  3    fname VARCHAR2(50),
  4    lname  VARCHAR2(50)
  5  );

Table created.

SQL>
SQL> INSERT INTO emp (id, fname, lname)VALUES (1'A''B');

row created.

SQL> INSERT INTO emp (id, fname, lname)VALUES (2'C''D');

row created.

SQL> INSERT INTO emp (id, fname, lname)VALUES (3'Enn', 'F');

row created.

SQL> INSERT INTO emp (id, fname, lname)VALUES (4'G''H');

row created.

SQL> INSERT INTO emp (id, fname, lname)VALUES (5'G''Z');

row created.

SQL>
SQL>
SQL>
SQL> SET SERVEROUTPUT ON ESCAPE OFF
SQL>
SQL> DECLARE
  2     CURSOR auth_cur IS SELECT FROM emp;
  3  BEGIN
  4
  5     FOR v_emp IN auth_cur
  6     LOOP
  7        DBMS_OUTPUT.PUT_LINE(v_emp.lname);
  8     END LOOP;
  9
 10  END;
 11  /
B
D
F
H
Z

PL/SQL procedure successfully completed.

SQL>
SQL> drop table emp;

Table dropped.

   
    
    
    
  
Related examples in the same category
1.Cursor with a single value
2.Update statement with cursor variable
3.Server-side cursor variables.
4.A cursor FOR loop.
5.Cursor Variable Example 2
6.Read full table data from a cursor
7.Single column cursor
8.Use Complex cursor to simplify the pl/sql logic
9.Use data referenced by cursor to update table
10.Use number functions when creating a cursor value
11.Form sentences from database data
12.Two identical queries to demonstrate the impact of changes
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