Answer / raveendran

In Oracle/PLSQL, the NVL function lets you substitute a
value when a null value is encountered.

The syntax for the NVL function is:

NVL( string1, replace_with )

string1 is the string to test for a null value.

replace_with is the value returned if string1 is null.

Answer / the superstar rajnikanth

NVL(F,E)
if F is null,it returns expression E.F can be of any type.
the type of E should be the same as that on the left-hand side.

Answer / shivaindu

In Oracle/PLSQL, the NVL function lets you substitute a
value when a null value is encountered.

The syntax for the NVL function
-------------------------------

NVL( string1, replace_with )

Example #1:
----------

select NVL(supplier_city, 'n/a' or ‘0’)
from suppliers;

Answer / dinesh kumar

Converts Null value to Absolute for calculation.

Ex : nvl(commission,0) returns 0 when commission is null.

how to insert values like 10:10:00,30:25:00 etc.into table after insert how can i sum the above insert values to get the result as 40:35:00

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