NVL « Char Functions « Oracle PL / SQL

Oracle PL / SQL

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Oracle PL / SQL » Char Functions » NVL

1.	NVL: Returns a substitute (some other value) if a value is null
2.	NVL: Supply an NVL default that is of a different datatype
3.	NVL: Provide default value for NULL
4.	Use NVL() to convert number columns and date columns
5.	NVL() deals with date value
6.	Combine nvl and to_char
7.	select nvl( '', 'Yes '''' is null' ) "Evaluate"
8.	nvl( e2.ename, 'NO BOSS! PARTY TIME!' )
9.	Use nvl in a function
10.	Use TRUNC function in NVL function
11.	This will fail, because the datatypes of the two arguments are different
12.	Accommodate the datatype difference by placing a TO_CHAR function around the LAST_STOCK_DATE
13.	Use NVL to check nullment in PL/SQL
14.	Use Nvl function in math calculation for null value

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