To number or null : Utility Function « Function Procedure Packages « Oracle PL/SQL Tutorial

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Oracle PL/SQL Tutorial » Function Procedure Packages » Utility Function

27. 26. 4. To number or null


SQL>

SQL> create or replace FUNCTION to_number_or_null(aiv_number in varchar2)return                                number is

  2  begin

  3    return to_number(aiv_number);

  4  exception

  5    when INVALID_NUMBER then

  6      return NULL;

  7  end to_number_or_null;

  8  /



Function created.



SQL>

27. 26. Utility Function
	27. 26. 1.	Get nearest day
	27. 26. 2.	Compare date offset in a function
	27. 26. 3.	Create a procedure to count employees
	27. 26. 4.	To number or null
	27. 26. 5.	Removes all numeric digits from the string passed in.
	27. 26. 6.	Generic function utilizing dynamic SQL to return the number of rows in the specified table.
	27. 26. 7.	Get the Max date
	27. 26. 8.	String between function
	27. 26. 9.	Add day to month
	27. 26. 10.	Date time calculation function
	27. 26. 11.	Table Count function
	27. 26. 12.	Word count function
	27. 26. 13.	Define your own varchar to date function
	27. 26. 14.	Get the next business day
	27. 26. 15.	Format money
	27. 26. 16.	Date calculation: business days between
	27. 26. 17.	Convert Comma-separated values to table collection
	27. 26. 18.	Function to convert celsius to fahrenheit
	27. 26. 19.	Function to convert fahrenheit to celsius
	27. 26. 20.	Get circle area

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