Re: When is a blank not a null or ''

[Michael Kleiser <mkl@xxxxxxxxxxx>]

mike wrote:

I have the following query (I have removed all nulls from the field as
test)

SELECT first_name,work_email FROM tb_contacts  WHERE
tb_contacts.work_email <>'';

However I get loads of blank email addresses coming up

anyone any ideas

---------------------------(end of broadcast)---------------------------
TIP 1: subscribe and unsubscribe commands go to majordomo@xxxxxxxxxxxxxx
  

Are NULL in work_email possible ?
If yes you should you have to use.

SELECT first_name,work_email FROM tb_contacts  WHERE
  tb_contacts.work_email <>''
AND 
  tb_contacts.work_email IS NOT NULL;

By the was in Oracle there is no difference between empty
CHAR- or VARCHAR-column and NULL- CHAR or VARCHAR-columns.
But that is scpecial to Oracle.