SET NULLDISPLAY

From Recital Documentation Wiki
Revision as of 11:50, 19 March 2009 by Yvonnemilne (Talk | contribs)

Jump to: navigation, search

SET NULLDISPLAY

Class

SQL Applications


Purpose

To specify the text displayed for NULL values


Syntax

SET NULLDISPLAY TO [<expC>]


See Also

ALTER TABLE, CREATE TABLE, EMPTY(), INSERT, ISBLANK(), ISNULL(), SET NULL


Description

The SET NULLDISPLAY command is used to specify the text displayed for NULL values. By default NULL values are displayed as .NULL.. The optional <expC> is used to specify alternative display text. If <expC> is omitted, then the display is reset to the default.


Example

set sqldialect to vfp
set null on
set heading off
CREATE TABLE nullon (firstname c(20), lastname c(20))
INSERT INTO nullon (lastname) VALUES ("Smith")
list off
.NULL.		Smith

set nulldisplay to "<null>"
list off
<null>			Smith

set nulldisplay to
list off
.NULL.		Smith


Products

Recital Database Server, Recital Mirage Server, Recital Terminal Developer