Re: numeric fields and null

От:

Rod Taylor <rbt@rbt.ca>

Дата:

22 мая 2003 г. в 23:15:04

> adhoc=# select id,postaladdressid from users where postaladdressid=null;

Given the SQL definition of NULL, = NULL must be false.

Use postaladdressid IS NULL to do what you want.

-- 
Rod Taylor 

PGP Key: http://www.rbt.ca/rbtpub.asc

numeric fields and null

От:

Don Park <don+postgresql@klickitat.st>

Дата:

22 мая 2003 г. в 19:58:15

Im trying to pull out all records in a table where field
'postaladdressid=null' but I cant figure this out.

\d users
....
id               | numeric
postaladdressid  | numeric
....

adhoc=# update users set postaladdressid=null where id=50;
UPDATE 1

adhoc=# select id,postaladdressid from users where postaladdressid=null;id | postaladdressid
----+-----------------
(0 rows)

Why did it not select record 50?

just for your info, this is what record 50 looks like.
adhoc=# select id,postaladdressid from users where id=50;id | postaladdressid
----+-----------------50 |
(1 row)


Don
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