Difference between revisions of "NULL Predicate"
From Recital Documentation Wiki
Helengeorge (Talk | contribs) |
Helengeorge (Talk | contribs) (→Products) |
||
| Line 27: | Line 27: | ||
==Products== | ==Products== | ||
| − | Recital | + | Recital, Recital Server |
[[Category:Documentation]] | [[Category:Documentation]] | ||
[[Category:SQL]] | [[Category:SQL]] | ||
Revision as of 17:37, 8 December 2009
Purpose
Special predicate
Syntax
<expression> IS [NOT] NULL
See Also
PREDICATES, INSERT, SELECT, UPDATE
Description
NULL is a special predicate to evaluate whether the specified <expression> is NULL. The optional NOT can be used to evaluate whether the specified <expression> is not NULL.
Example
EXEC SQL SELECT name, address, balance, cost*1.15 FROM accounts WHERE paid_date < date() AND ord_value IS NULL ORDER BY name, paid_date;
Products
Recital, Recital Server
