Difference between revisions of "SET NULLDISPLAY"
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==Purpose== | ==Purpose== | ||
To specify the text displayed for NULL values | To specify the text displayed for NULL values | ||
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==See Also== | ==See Also== | ||
| − | [[ALTER TABLE]], [[CREATE TABLE]], [[EMPTY()]], [[INSERT]], [[ISBLANK()]], [[ISNULL()]], [[SET NULL]] | + | [[ALTER TABLE]], [[CREATE TABLE]], [[EMPTY()]], [[INSERT]], [[ISBLANK()]], [[ISNULL()]], [[NVL()]], [[SET NULL]], [[SET SQL]] |
| Line 23: | Line 16: | ||
==Example== | ==Example== | ||
| − | < | + | <code lang="recital"> |
| − | set | + | set sql to vfp |
set null on | set null on | ||
set heading off | set heading off | ||
| Line 30: | Line 23: | ||
INSERT INTO nullon (lastname) VALUES ("Smith") | INSERT INTO nullon (lastname) VALUES ("Smith") | ||
list off | list off | ||
| − | .NULL. | + | .NULL. Smith |
set nulldisplay to "<null>" | set nulldisplay to "<null>" | ||
list off | list off | ||
| − | <null> | + | <null> Smith |
set nulldisplay to | set nulldisplay to | ||
list off | list off | ||
| − | .NULL. | + | .NULL. Smith |
| + | </code> | ||
==Products== | ==Products== | ||
| − | Recital | + | Recital Server, Recital |
[[Category:Documentation]] | [[Category:Documentation]] | ||
[[Category:Commands]] | [[Category:Commands]] | ||
[[Category:Set_Commands|NULLDISPLAY]] | [[Category:Set_Commands|NULLDISPLAY]] | ||
| + | [[Category:SQL]] | ||
| + | [[Category:SQL Set Commands]] | ||
Latest revision as of 16:27, 23 November 2009
Purpose
To specify the text displayed for NULL values
Syntax
SET NULLDISPLAY TO [<expC>]
See Also
ALTER TABLE, CREATE TABLE, EMPTY(), INSERT, ISBLANK(), ISNULL(), NVL(), SET NULL, SET SQL
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 sql 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 Server, Recital
