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Oracle Tutorials - Define a Variable to Match Column Data Type

By: FYIcenter.com

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How To Define a Variable to Match a Table Column Data Type?

If you have a table, and want to define some variables to have exactly the same data types as some columns in that table, you can use table_name.column_name%TYPE as data types to define those variables. The tutorial sample below shows you how to do this:

CREATE OR REPLACE PROCEDURE FYI_CENTER AS
  my_email employees.email%TYPE;
  my_salary employees.salary%TYPE;
BEGIN
  SELECT email, salary INTO my_email, my_salary
    FROM employees WHERE employee_id = 101;
  DBMS_OUTPUT.PUT_LINE('My email = ' || my_email);
  DBMS_OUTPUT.PUT_LINE('My salary = ' || my_salary);
END;
/
My email = NKOCHHAR
My salary = 17000

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  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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