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How can I retrieve these rows?

Posted on 2014-04-29
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Last Modified: 2014-05-07
I have a table that looks like this:

sortorder    statusid   workqueueroleid
1                    NULL          NULL
2                    NULL          NULL
3                    NULL          NULL
4                    30                10
5                    30                10
6                    NULL          NULL
7                    NULL          NULL

What would my select statement look like if I wanted to retrieve all the rows above row #4. In other words, I don't want rows 5, 6 or 7. I only want the rows 1,2 and 3.

How would I do it?
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Question by:brucegust
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13 Comments
 
LVL 65

Assisted Solution

by:Jim Horn
Jim Horn earned 105 total points
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Use the WHERE clause to filter the rows returned:
SELECT sortorder, statusid, workqueueroleid
FROM your_table
WHERE sortorder <= 3

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LVL 34

Assisted Solution

by:Brian Crowe
Brian Crowe earned 50 total points
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What is your logic for defining the cut-off?  Is it the first non-null value? Is it just the sortorder value as Jim defines above?
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Accepted Solution

by:
plusone3055 earned 99 total points
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JH logic is correct. an alternative way would also be

SELECT    sortorder
              ,statusid
              ,workqueroleid
FROM      YOUR TABLE
WHERE    sortorder IN(1,2,3)

This alternative would be if you wanted SPECIFIC row numbers versus where JH would show everything less than or equal to 3

variety :)
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Assisted Solution

by:plusone3055
plusone3055 earned 99 total points
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his logic  
WHERE sortorder <= 3  

means  where the sortorder is less than or equal to 3

my logic  IN(1,2,3)

means when the sort order number is 1 or 2 or 3
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LVL 30

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by:Marco Gasi
Marco Gasi earned 49 total points
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if you wanto only the first three records you can use LIMIT:

SELECT    sortorder ,statusid ,workqueroleid FROM  table LIMIT 3
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LVL 31

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by:awking00
awking00 earned 98 total points
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If you're trying to retrieve all of the rows that contain null statusids and workqueueroleids that exist prior non-null values based onthe sort order, then

select sortorder, statusid, workqueueroleid from
(select sortorder, statusid, workqueueroleid,
 row_number() over (order by statusid desc, workqueueroleid desc, sortorder) rn
 from table1) as x
where rn = sortorder;
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LVL 108

Expert Comment

by:Ray Paseur
Comment Utility
@MarqusG: I think LIMIT is a MySQL construct, not MS SQL.  But that aside, if we know the data criteria we can help craft a WHERE clause.  I just have this nagging feeling that the question has some subtext that we cannot find in the literal text.
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Expert Comment

by:Marco Gasi
Comment Utility
Oh, I didn't make attention to the topic! But I should... :)
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LVL 65

Assisted Solution

by:Jim Horn
Jim Horn earned 105 total points
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brucegust - As you can tell, we have multiple excellent answers for you.  It would help if you could confirm for us that they work, and if not give us some more details.
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LVL 31

Assisted Solution

by:awking00
awking00 earned 98 total points
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brucegust, what would you want to retrieve if the rows were like this?
sortorder    statusid   workqueueroleid
1                    NULL          NULL
2                    NULL          NULL
3                    NULL          NULL
4                    NULL          NULL
5                    30                10
6                    30                10
7                    NULL          NULL
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LVL 69

Assisted Solution

by:ScottPletcher
ScottPletcher earned 49 total points
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SELECT *
FROM dbo.tablename
WHERE
    sortorder < (SELECT MIN(sortorder) FROM dbo.tablename WHERE statusid IS NOT NULL)
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LVL 14

Assisted Solution

by:Vikas Garg
Vikas Garg earned 50 total points
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Hi,

You can try this using top and orderby

SELECT top 3 sortorder, statusid, workqueueroleid
FROM your_table
WHERE statusid is null and workqueueroleid is null
order by sortorder
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Author Comment

by:brucegust
Comment Utility
Guys, as always, thanks for the assistance. I apologize for not staying tuned in. I wound up going with a different approach that involved a nested table and it worked great.

I'll distribute points based on the obvious time and trouble you took to help. Thanks again!
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