Setting the Regular expression check for varchar field : Check « Table « Oracle PL/SQL Tutorial

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Oracle PL/SQL Tutorial » Table » Check

6. 13. 14. Setting the Regular expression check for varchar field


SQL>

SQL> CREATE TABLE myTable (

  2     Name    VARCHAR(50) PRIMARY KEY NOT NULL,

  3     PhoneNo VARCHAR(15) DEFAULT 'Unknown Phone',

  4     SSN     VARCHAR(15) NOT NULL,

  5     CHECK (SSN LIKE '[0-9][0-9][0-9]-[0-9][0-9]-[0-9][0-9][0-9][0-9]'));



Table created.



SQL>

SQL>

SQL> drop table myTable;



Table dropped.



SQL>

6. 13. Check
	6. 13. 1.	Create a table with check constraint
	6. 13. 2.	Adding a CHECK Constraint
	6. 13. 3.	Use comparison operators with a CHECK constraint
	6. 13. 4.	Constraint with Two conditions
	6. 13. 5.	Add condition constraint with 'and' operator
	6. 13. 6.	Check constraint with decode and nvl2
	6. 13. 7.	Check constraint with MOD function
	6. 13. 8.	A column with upper case constraint
	6. 13. 9.	check constraint: must be positive value
	6. 13. 10.	Check constraint: one column must less than another column
	6. 13. 11.	Add constraint to ensure that value from one column is bigger than that from another
	6. 13. 12.	Salary column value cannot be greater than 1000
	6. 13. 13.	Setting CHECK constraint for number type field
	6. 13. 14.	Setting the Regular expression check for varchar field
	6. 13. 15.	Use char function to build default column value
	6. 13. 16.	Use decode() function in check constraints
	6. 13. 17.	Violate a ckeck constraint
	6. 13. 18.	Must be upper case

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