in sql how can i exclude several values in a "not in" ?


i'm trying to figure out how to exclude several values like follow :

and LogonName NOT IN (N'[admin]*', N'Admin%', N'xe%', N'ext%', N'te-%')
and ....

but i'm receiving values like
LogonName : Admin....

how can i exclude in a list like in my example ?`

thank you in advance for your help.

Erwin PombettAsked:
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PortletPaulEE Topic AdvisorCommented:
is the collation for LogonName case sensitive?

perhaps you need to apply a case insensitive collation

least desirable, but useful as a test:

and LOWER(LogonName) NOT IN (N'[admin]*', N'admin%', N'xe%', N'ext%', N'te-%')
Guy Hengel [angelIII / a3]Billing EngineerCommented:
I presume you want to have the actually a NOT IN LIKE ( ... ) ?

in which case, you cannot use NOT IN, you have to use:
and NOT LogonName LIKE N'[admin]*' 
and NOT LogonName LIKE N'Admin%'
and NOT LogonName LIKE N'xe%'
and NOT LogonName LIKE N'ext%'
and NOT LogonName LIKE N'te-%'

Open in new window

OR, you create a table with the patters to exclude:
create table SHORT_LOGON_NAME_EXCLUSIONS ( pattern nvarchar(100) )

insert into SHORT_LOGON_NAME_EXCLUSIONS values ( N'Admin%' )
insert into SHORT_LOGON_NAME_EXCLUSIONS values ( N'xe%' )
insert into SHORT_LOGON_NAME_EXCLUSIONS values ( N'ext%' )
insert into SHORT_LOGON_NAME_EXCLUSIONS values ( N'te-%'  )

Open in new window

and your code becomes like this:
   WHERE  LogonName LIKE pattern )

Open in new window

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PortletPaulEE Topic AdvisorCommented:
Oh dear,  my comment is so wrong.  Please ignore it.
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Erwin PombettAuthor Commented:
hello Guy Angel and PortletPaul,

thank you for your replies.

Guy Angel, i 'm trying to figure out what "select null " is for  ? could you explain in short answer ?

thank you in advance.

Erwin PombettAuthor Commented:
Guy !
ok , i think i understand, we select NULL (an empty row) if the pattern is in logonName ?  
but the "not exists () " ? ....i can not figure out :/

Guy Hengel [angelIII / a3]Billing EngineerCommented:
a NOT EXISTS ( subquery ) does not need any data to be returned, actually, hence SELECT NULL.
you could write SELECT 1, SELECT somecolumn , it will not change the behavior

the subquery here is "corelated", means that for each row from the main result set (in this case, the table that has the login names you want to show), the subquery will be run

 WHERE  LogonName LIKE pattern

it would be easier to understand if we write like this:
SELECT t.LogonName 
  FROM yourtable t
   WHERE  t.LogonName LIKE ex.pattern )

Open in new window

hope this makes it clearer on what is happening
Erwin PombettAuthor Commented:
thanks a lot Guy !
I got it.
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Microsoft SQL Server

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