SQL Query Remove Part of Path/Null - sql

Question

So I am new the whole SQL Query business but I need some help with two issues. My goal is to have anything in the Column "EnvironmentName" that has the word "Database" in Column "NodeName" to be displayed in the query results. I did this with
FROM [Backbone_ASPIDER].[dbo].[vw_CFGsvr_Con]
WHERE NodeName = 'Database'
ORDER BY EnvironmentName asc
WHERE NodePath
Results of Query:
I am able to get my query results but would like to remove the rows with NULL. I have tried to use "IS NOT NULL" but SQL Server Management Studio labeles this as "incorrect syntax."
What I have tried:
FROM [Backbone_ASPIDER].[dbo].[vw_CFGsvr_Con]
WHERE NodeName = 'Database'
ORDER BY EnvironmentName asc IS NOT NULL
WHERE NodePath
Thank you in advance!

Answer 1

Your query is pretty close..
1: You have to specify a specific column to not be null while using IS NOT NULL.
So modify your query to:
FROM [Backbone_ASPIDER].[dbo].[vw_CFGsvr_Con]
WHERE NodeName = 'Database' AND EnvironmentName IS NOT NULL
ORDER BY EnvironmentName asc
WHERE NodePath
2: Check out this article about trimming parts of strings from query results
http://basitaalishan.com/2014/02/23/removing-part-of-string-before-and-after-specific-character-using-transact-sql-string-functions/

Answer 2

Where clause will come first and Then order by statement
Like following way
Select * FROM [Backbone_ASPIDER].[dbo].[vw_CFGsvr_Con]
WHERE [Backbone_ASPIDER].[dbo].[vw_CFGsvr_Con].[NodeName] = 'Database' AND [Backbone_ASPIDER].[dbo].[vw_CFGsvr_Con].[EnvironmentName] IS NOT NULL
ORDER BY [Backbone_ASPIDER].[dbo].[vw_CFGsvr_Con].[EnvironmentName] asc

Answer 3

EDIT: I just noticed you removed this from your OP, so feel free to disregard if you took care of that.
I don't think anyone addressed the substring problem yet. There's several ways you could get at this depending on how complex the strings are you have to slice up, but here's how I'd do it
-- Populating some fake data, representative of what you've got
if object_id('tempdb.dbo.#t') is not null drop table #t
create table #t
(
nPath varchar(1000)
)
insert into #t
select '/Database/Mappings/Silver/Birthday' union all
select '/Database/Connections/Blue/Happy'
-- First, get the character index of the first '/' after as many characters the word '/database/' takes up.
-- You could have hard coded this value too. Add 1 to it so that it moves PAST the slash.
;with a as
(
select
ixs = charindex('/', nPath, len('/Database/') + 1),
-- Get everything to the right of what you just determined with all the charindex() stuff
ss = right(nPath, len(nPath) - charindex('/', nPath, len('/Database/') + 1)),
nPath
from #t
)
-- Now just take the left of the now-cleaned-up string from start to the first pipe
select
ixs,
ss,
color = left(ss, charindex('/', ss) -1),
nPath
from a