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Geek Culture / Advice on MySql Query Tool

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BatVink
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Posted: 29th Sep 2004 18:54
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Anyone got a good MySql query tool for a local database?

PHPmyAdmin can't cope with the size of my query.

MySQL Query Browser just doesn't want to play.

BatVink
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Neofish
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Posted: 29th Sep 2004 18:56
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what is the query? why not write it yourself?

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Karlos
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Posted: 29th Sep 2004 20:02
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Pop in an 'explain' before the query to make sure you're accessing in the most efficient way there may be some join you could put in to improve things.

You could also play around with the limit directive to reduce the number of results.

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Richard Davey
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Posted: 29th Sep 2004 20:23
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Err I think he's actually written the Query already guys, he just wants a good GUI to run it through. The MySQL command-line one (in Windows) can't handle queries over a certain (very small) length for example.

BatVink - I use two programs depending on my mood, MySQL Front Version 2.2 (do NOT look at the newer version 3 and above, they are terrible in comparison).

I also recently bought SQLyog 3.7 which is great and much faster than MySQL Front (but, not free). Has very good export options too.

For actual complex query or table design I use the excellent, and free, DB Designer 4.

Cheers,

Rich

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BatVink
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Posted: 29th Sep 2004 20:44 Edited at: 29th Sep 2004 20:44
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Cheers all.

Yes, I already have the query but like Rich says, finding a tool powerful enough to run it is a problem. This one isn't complex, it's just manipulating a lot of data, and is in itself a very long series of statements. Optimisation isn't the issue.

I'll check out the tools you mentioned. DB Designer sounds interesting too.

While we're on the topic, can anyone translate this problem into SQL.

I have one table, products and categories with a many to many relationship. I want to return one row per product, and it must also return one of the categories too. I don't care which category, but it must be in the result set.

SELECT DISTINCT won't do it, if a product has 3 categories it will return 3 rows because category is in the collection of fields.

SELECT TOP * wont do it, it works on the full resultset, not an a row basis.

But maybe there is a way to combine the 2, reduce through a join, or some damn thing that means I don't have to script the results!

BatVink
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adr
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Posted: 29th Sep 2004 21:27
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Some of the plebs at work here use something called "MySQL control center" on their windows boxen, if that helps


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Richard Davey
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Posted: 30th Sep 2004 01:46
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BatVink - post the table structure, I can never work off descriptions alone.

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David T
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Posted: 30th Sep 2004 02:43
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Are you using a LEFT JOIN? If you have two tables:



Then this query'll return a product plus it's category info:



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BatVink
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Posted: 30th Sep 2004 03:20 Edited at: 30th Sep 2004 03:21
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David, it's one table, from which I want to reduce the rows to just one per product. So I want to go from

Product1 Category1
Product1 Category2
Product1 Category4
Product2 Category3
Product2 Category4
Product2 Category6

to

Product1 Category1
Product2 Category3

but for about 300 products across 12 categories

BatVink
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David T
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Posted: 30th Sep 2004 04:12
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Hmmmmm. Interesting. I'll have a think about that.

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Phaelax
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Posted: 30th Sep 2004 06:00
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I use SQL+
I've pasted in a whole page of sql commands and it took it all.

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spooky
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Posted: 30th Sep 2004 07:26
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Just do something like this:

SELECT Product_Id, Min(Cat_Id) AS MinCat_Id
FROM Products
GROUP BY Product_Id
ORDER BY Product_Id;

If there are more than one cat per product it will pick the lowest one. You can replace 'Min' with all sorts of things, like 'Max' to give largest cat per product, 'Count' to tell you how many cats per product.


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BatVink
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Posted: 30th Sep 2004 08:48
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Cheers, Spooky . Now I see it, it's obvious, and I've done it many times before. The word GROUP disappeared from my vocabulary, and that is what I needed

BatVink
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