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Oracle Tutorials - Assign Query Results to Variables

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(Continued from previous topic...)

How To Assign Query Results to Variables?

If you want to assign results from SELECT statements to variables, you can use the INTO clause, which an extension of SELECT statements for PL/SQL. The sample code below shows some good example on INTO clause:

  total NUMBER;
  now DATE;
  fname VARCHAR2(10);
  lname VARCHAR2(10);
  SELECT COUNT(*) INTO total FROM employees;
  DBMS_OUTPUT.PUT_LINE('Count = ' || TO_CHAR(total));
  DBMS_OUTPUT.PUT_LINE('Now = ' || TO_CHAR(now, 'SSSSS'));
  SELECT first_name, last_name INTO fname, lname
    FROM employees
    WHERE employee_id = 100;
  DBMS_OUTPUT.PUT_LINE('Name = ' || fname || ' ' || lname);
Count = 107
Now = 82375
Name = Steven King

(Continued on next topic...)

  1. Can DML Statements Be Used in PL/SQL?
  2. Can DDL Statements Be Used in PL/SQL?
  3. Can Variables Be Used in SQL Statements?
  4. What Happens If Variable Names Collide with Table/Column Names?
  5. How To Resolve Name Conflicts between Variables and Columns?
  6. How To Assign Query Results to Variables?
  7. Can You Assign Multiple Query Result Rows To a Variable?
  8. How To Invoke Built-in Functions in PL/SQL?
  9. How To Retrieve the Count of Updated Rows?
  10. What Is the Implicit Cursor?
  11. How To Assign Data of the Deleted Row to Variables?
  12. What Is a RECORD in PL/SQL?
  13. How To Define a Specific RECORD Type?
  14. How To Define a Variable of a Specific RECORD Type?
  15. How To Assign Values to Data Fields in RECORD Variables?
  16. How To Retrieve Values from Data Fields in RECORD Variables?
  17. How To Define a Data Field as NOT NULL?
  18. How To Define a RECORD Variable to Store a Table Row?
  19. How To Assign a Table Row to a RECORD Variable?
  20. How To Insert a RECORD into a Table?
  21. How To Update a Table Row with a RECORD?
  22. How To Define a Variable to Match a Table Column Data Type?

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