Re: [ic] sql query slower than expected

[Bill Carr <suppressed>]

On Feb 16, 2007, at 1:34 PM, DB wrote:

> I'm running IC 5.4.2 with mysql. My products table includes several
> brands, ands each has a unique value for the category field. One brand
> (category=BRAND_A) has many more skus that the others, nearly 250,000.
>
> I want to display the skus from BRAND_A and the following query  
> does the
> job, however it is much slower than I expected and I can see the
> server's CPU load spike up while it is running.
>
> I do have the category column indexed. Can someone tell me why this is
> so slow? My server is a dual Xeon with 4GB of Ram. Is this query that
> horribly inefficient?
>
> [query
>     type=list
>     more=1
>     ml=75
>     sql=|
>         SELECT  sku, description, comment, category
>         FROM    products
>         WHERE  category = 'BRAND_A'
> |]
Try running your query in your mysql client. See how long it takes.  
Also EXPLAIN the query.

mysql> EXPLAIN SELECT  sku, description, comment, category FROM     
products WHERE  category = 'BRAND_A'

http://dev.mysql.com/doc/refman/5.0/en/query-speed.html

Bill Carr
Bottlenose - Wine & Spirits eBusiness Specialists
(877) 857-6700
http://www.bottlenose-wine.com

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