Using Default Values : Default Column Value « Table « Oracle PL/SQL Tutorial

Oracle PL/SQL Tutorial

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Oracle PL/SQL Tutorial » Table » Default Column Value

6. 14. 1. Using Default Values

Define a default value for a column.

last_modified column is defaulted to the value returned by the SYSDATE function.


SQL>

SQL> CREATE TABLE myTable (

  2    id INTEGER,

  3    status VARCHAR2(20) DEFAULT 'Order placed' NOT NULL,

  4    last_modified DATE DEFAULT SYSDATE

  5  );



Table created.



SQL>

SQL> drop table myTable;



Table dropped.

6. 14. Default Column Value
	6. 14. 1.	Using Default Values
	6. 14. 2.	Insert record into a table with default value
	6. 14. 3.	Override the defaults by specifying a value for the columns
	6. 14. 4.	Update a column and set it back to the default using the DEFAULT keyword in an UPDATE statement
	6. 14. 5.	Update statement with default
	6. 14. 6.	Add a column with default value
	6. 14. 7.	Date type column with current date as the default value
	6. 14. 8.	null with default value column

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