Solved

MySql select query with multiple LIKE clause not working

Posted on 2010-08-26
3
340 Views
Last Modified: 2012-05-10
Hi,

I have the following MySql statement that is generated by a script based upon the input from the user.
If the user enters more than one term like in this case 'glass plates' I want it to locate all products where the product code or description is LIKE glass OR plates.
This is fine but slightly more complicated by the additional AND clauses which end up with the malformed query below. I have tried a few alternatives but this query result needs to be paginated and they did not seem to work.

SELECT ProdHead.ProdCode, ProdHead.ProdDesc, ProdSku.Colour  
FROM ProdHead
INNER JOIN ProdSku ON ProdHead.ProdCode = ProdSku.ProdCode
INNER JOIN ProdTitleIndex ON ProdHead.ProdCode = ProdTitleIndex.ProdCode
WHERE Concat(ProdHead.ProdDesc,Prodhead.prodcode) LIKE '%glass%'
OR Concat(ProdHead.ProdDesc,Prodhead.prodcode) LIKE '%plates%'
AND ProdHead.Avail = 1
AND ProdSku.Avail = 1
AND ProdHead.SubGroup > 0
AND ProdHead.SubGroup = 228
ORDER BY ProdHead.ProdDesc
LIMIT 0, 10

The only way I can get this to work is by repeating the AND clauses after each OR cluase which is just silly so I was hoping there may be a way of doing something such as

WHERE ........ IN('%glass%','%plates%')


Any help appreciated.

Regards
Leigh
0
Comment
Question by:Lmillard
3 Comments
 
LVL 142

Accepted Solution

by:
Guy Hengel [angelIII / a3] earned 500 total points
ID: 33529809
>WHERE ........ IN('%glass%','%plates%')

sorry, won't work, unfortunately ...

apart from that: you mix AND an OR, so you need ()
SELECT ProdHead.ProdCode, ProdHead.ProdDesc, ProdSku.Colour  

FROM ProdHead

INNER JOIN ProdSku ON ProdHead.ProdCode = ProdSku.ProdCode

INNER JOIN ProdTitleIndex ON ProdHead.ProdCode = ProdTitleIndex.ProdCode

WHERE ( Concat(ProdHead.ProdDesc,Prodhead.prodcode) LIKE '%glass%'

     OR Concat(ProdHead.ProdDesc,Prodhead.prodcode) LIKE '%plates%'

      )

AND ProdHead.Avail = 1

AND ProdSku.Avail = 1

AND ProdHead.SubGroup > 0

AND ProdHead.SubGroup = 228

ORDER BY ProdHead.ProdDesc

LIMIT 0, 10 

Open in new window

0
 
LVL 58

Expert Comment

by:cyberkiwi
ID: 33529829
You need to properly bracket the LIKE's

SELECT ProdHead.ProdCode, ProdHead.ProdDesc, ProdSku.Colour  
FROM ProdHead
INNER JOIN ProdSku ON ProdHead.ProdCode = ProdSku.ProdCode
INNER JOIN ProdTitleIndex ON ProdHead.ProdCode = ProdTitleIndex.ProdCode
WHERE
(     Concat(ProdHead.ProdDesc,Prodhead.prodcode) LIKE '%glass%'
      OR Concat(ProdHead.ProdDesc,Prodhead.prodcode) LIKE '%plates%' )
AND ProdHead.Avail = 1
AND ProdSku.Avail = 1
AND ProdHead.SubGroup > 0
AND ProdHead.SubGroup = 228
ORDER BY ProdHead.ProdDesc
LIMIT 0, 10

The IN form doesn't work, IN only takes exact matches.
Though the query above will work, to perform decently, you may want to try splitting it out and timing each alternative.

SELECT ProdHead.ProdCode, ProdHead.ProdDesc, ProdSku.Colour  
FROM ProdHead
INNER JOIN ProdSku ON ProdHead.ProdCode = ProdSku.ProdCode
INNER JOIN ProdTitleIndex ON ProdHead.ProdCode = ProdTitleIndex.ProdCode
WHERE
(     ProdHead.ProdDesc LIKE '%glass%' OR
      Prodhead.prodcode LIKE '%glass%' OR
      ProdHead.ProdDesc LIKE '%plates%' OR
      Prodhead.prodcode LIKE '%plates%')
AND ProdHead.Avail = 1
AND ProdSku.Avail = 1
AND ProdHead.SubGroup > 0
AND ProdHead.SubGroup = 228
ORDER BY ProdHead.ProdDesc
LIMIT 0, 10
0
 

Author Closing Comment

by:Lmillard
ID: 33530049
Great, thanks very much
0

Featured Post

Highfive + Dolby Voice = No More Audio Complaints!

Poor audio quality is one of the top reasons people don’t use video conferencing. Get the crispest, clearest audio powered by Dolby Voice in every meeting. Highfive and Dolby Voice deliver the best video conferencing and audio experience for every meeting and every room.

Join & Write a Comment

As a database administrator, you may need to audit your table(s) to determine whether the data types are optimal for your real-world data needs.  This Article is intended to be a resource for such a task. Preface The other day, I was involved …
Does the idea of dealing with bits scare or confuse you? Does it seem like a waste of time in an age where we all have terabytes of storage? If so, you're missing out on one of the core tools in every professional programmer's toolbox. Learn how to …
Excel styles will make formatting consistent and let you apply and change formatting faster. In this tutorial, you'll learn how to use Excel's built-in styles, how to modify styles, and how to create your own. You'll also learn how to use your custo…
You have products, that come in variants and want to set different prices for them? Watch this micro tutorial that describes how to configure prices for Magento super attributes. Assigning simple products to configurable: We assigned simple products…

747 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question

Need Help in Real-Time?

Connect with top rated Experts

17 Experts available now in Live!

Get 1:1 Help Now