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Trying to combine 2 Select statetments

Posted on 2009-04-13
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Last Modified: 2012-05-06
SELECT     TOP (1) F1
FROM         WordList
WHERE     (F1 > '')
ORDER BY NEWID()


SELECT     TOP (1) F2
FROM         WordList
WHERE     (F2 > '')
ORDER BY NEWID()

I want to take both of those select statements and combine them so that the results are two colums with one row.  
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Question by:arthurh88
3 Comments
 
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by:appari
appari earned 150 total points
ID: 24134238
with A as (SELECT     TOP (1) F1
FROM         WordList
WHERE     (F1 > '')
ORDER BY NEWID()), B AS (
SELECT     TOP (1) F2
FROM         WordList
WHERE     (F2 > '')
ORDER BY NEWID()
)

select * from A,B
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LVL 57

Assisted Solution

by:Raja Jegan R
Raja Jegan R earned 150 total points
ID: 24134279
In a simple manner:

SELECT (SELECT     TOP (1) F1 FROM  WordList WHERE     (F1 > '') ORDER BY NEWID()) F1,
(SELECT     TOP (1) F2 FROM WordList WHERE (F2 > '') ORDER BY NEWID()) F2
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LVL 15

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by:
rob_farley earned 200 total points
ID: 24134536
Yeah, go for the second one.

But... if your WordList is a large table, ordering by newid() is potentially very expensive. You're generating a new guid for each row, and then going through that list looking for the smallest random value.

It might be better to consider generating a single random number and then finding that row.

Rob
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