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Question about where statement and not equal to results

Posted on 2007-04-10
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Last Modified: 2013-12-24
Currently, all online requests are being displayed because I am using the following code:
<cfquery name="webdirectory" datasource="hr">
SELECT * FROM gradschool WHERE 0=0
order by id DESC

The documentation field contains several possibilities:  it is blank or contains one of the following terms:  delete, denied, approved.  I would like the delete requests not to show up; however when I use this code,

WHERE documentation <> 'delete'

the delete requests don't show up but neither do the empty - waiting to approved requested - which is bad.  Other then filling the empty field with a term, is there any code that will allow me to do this?

Thanks,
Deb
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Question by:wwp_it
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5 Comments
 
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Accepted Solution

by:
usachrisk1983 earned 500 total points
ID: 18883091
Your query should look like this:

select gradschool.*
   from gradschool
  where gradschool.documentation <> 'delete' or gradschool.documentation is null
0
 
LVL 20

Expert Comment

by:trailblazzyr55
ID: 18892422
you may want to try one of two things depending on your database and sql.

<cfquery name="webdirectory" datasource="hr">
SELECT * FROM gradschool
WHERE documentation != 'delete'
order by id DESC
</cfquery>

or...

<cfquery name="webdirectory" datasource="hr">
SELECT * FROM gradschool
WHERE documentation <> 'delete'
order by id DESC
</cfquery>

for a single table, you don't really need to prefix with an alias, and where 0=0 is not needed unless you have a dynamic WHERE clause and some or non of the WHERE conditions will be met.
0
 
LVL 20

Expert Comment

by:trailblazzyr55
ID: 18892440
usachrisk1983 already has demonstrated the code if you want to not show nulls as well.
0
 
LVL 20

Expert Comment

by:trailblazzyr55
ID: 18892470
sorry misread, usachrisk1983's code will return null records in the "documentation" field, you don't really need to specify you want nulls, they will come back with everything else.
0
 

Author Comment

by:wwp_it
ID: 18900616
select gradschool.*
   from gradschool
  where gradschool.documentation <> 'delete' or gradschool.documentation is null

Chris,

Why do you use the period after gradschool in the select line?
Deb
0

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