[ic] sql query slower than expected
bill at worldwideimpact.com
Fri Feb 16 14:14:16 EST 2007
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?
> 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'
Bottlenose - Wine & Spirits eBusiness Specialists
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