Difference between revisions of "ISNULL()"
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Revision as of 08:17, 4 February 2013
Contents
Purpose
Function to test if an expression evaluates to NULL
Syntax
ISNULL(<expr>)
See Also
EMPTY(), IFNULL(), ISALPHA(), ISBLANK(), ISDIGIT(), NVL(), SET NULL, SET NULLDISPLAY
Description
The ISNULL() function will return True (.T.) if the specified expression, <expr> is NULL otherwise False (.F.).
Example
select account_no, isnull(last_name) from customer;
