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SQL SELECT CASE & REPLACE() for text change / sorting

Posted on 2013-05-15
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Last Modified: 2013-05-15
I've assigned a coloum called ptmorphraw to rework the post_title value for sorting. However, when I apply the query the replace values come up as null.

Essentially I need to replace the value so the text...Single Stream, Double Stream etc, become
1 Stream, 2 Stream

SELECT CASE WHEN a.post_title LIKE  '%Single Stream%'
THEN REPLACE( a.post_title,  'Single Stream',  '1 Stream' ) 
WHEN a.post_title LIKE  '%Double Stream%'
THEN REPLACE( a.post_title,  'Double Stream',  '2 Stream' ) 
END AS ptmorphraw, a.post_title AS ptmorph, a . * , d . * 
FROM wp_prefix_posts a
INNER JOIN wp_prefix_term_relationships e ON a.ID = e.object_id
INNER JOIN wp_prefix_term_taxonomy c ON c.term_taxonomy_id = e.term_taxonomy_id
INNER JOIN wp_prefix_terms d ON c.term_id = d.term_id
WHERE e.object_id = a.ID
AND a.post_type =  'recyclingbins'
AND a.post_status =  'publish'
AND d.slug =  'steel'
GROUP BY a.id
ORDER BY ptmorphraw ASC 

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Question by:m2ew
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3 Comments
 
LVL 75

Accepted Solution

by:
Aneesh Retnakaran earned 2000 total points
ID: 39169163
You missed to put an else condition on your case statement

CASE WHEN a.post_title LIKE  '%Single Stream%'
THEN REPLACE( a.post_title,  'Single Stream',  '1 Stream' )
WHEN a.post_title LIKE  '%Double Stream%'
THEN REPLACE( a.post_title,  'Double Stream',  '2 Stream' )
ELSE a.post_title
END AS ptmorphraw,
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LVL 75

Expert Comment

by:Aneesh Retnakaran
ID: 39169179
and your order by to work , should contain the same case statement instead of the column name
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Author Comment

by:m2ew
ID: 39169208
@aneeshattingal

Brilliant! Knew it had to be something silly. Been staring at the query too long.
Thanks.
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