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Published on 2010-06-06T14:10:34Z
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Does this query will be faster with a index on "t.type1" and "x.type1" or only index on "x.type1" is enought?
SELECT t.id, x.id
FROM t
INNER JOIN x ON x.type1=t.type1
WHERE t.id=1
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I exported a live MySQL database (running mysql 5.0.45) to a local copy (running mysql 5.1.33) with no errors upon import. There is a view in the database, that when executed locally, returns a different set of data than when executed remotely. It's returning 32 results instead of 63. When I execute…
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This is a query I am doing with mysql using PHP
This is the query line
<?php
$query = "SELECT * FROM node WHERE type = 'student_report' AND uid = '{$uid}' LIMIT 1 ORDER BY created DESC";
?>
I get the following error
You have an error in your SQL syntax; check the manual that corresponds…
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MySQL's query cache is an impressive piece of engineering if sometimes misunderstood. Keeping it optimized and used efficiently can make a big difference in the overall throughput of your application, so it's worth taking a look under the hood, understanding it, and then keeping it tuned optimally.
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Hi all,
I have the following table:
Service_ID feedback
31 1
32 1
33 1 1
I have the sample code to find the sum:
ResultSet res = st.executeQuery("SELECT Service_ID,SUM(consumer_feedback)…
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I have a table with at least a couple million rows and a schema of all integers that looks roughly like this:
start
stop
first_user_id
second_user_id
The rows get pulled using the following queries:
SELECT *
FROM tbl_name
WHERE stop >= M
AND first_user_id=N
AND second_user_id=N…
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I've setup a few catalogs on an Windows Server 2003 IIS6 install, each tracking files within a website. In the Properties - Generation Dialog for each catalog, 'Index files with unknown extensions' is turned OFF. 'Inherit above settings from Service' in that dialog is also turned off.
However, the…
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I'm running Outlook 2007 under Windows 7 Home Premium RTM. My OST file was previously being properly indexed but eventually searches significantly slowed down so I suspected a problem. Searching and indexing appears broken in OneNote 2007 as well as search time is now significantly longer.
I brought…
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I have a few questions about whether or not it would be best to not use indexing.
BACKGROUND:
My records have a timestamp attribute, and the records will be inserted in order of their timestamps (i.e., inserted chronologically).
QUESTIONS:
If I DON'T use indexing is it typical for the database…
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Recently I just wrote a blog post on about Learning SQL Server Performance: Indexing Basics and I received lots of request that if we can share some insight into the course.
Here is 200 seconds interview of Vinod Kumar I took right after completing the course. We have few free codes to watch the course…
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I am having a slight debate with a colleague of mine on this subject.
Scenario:
A web site has a sub directory that is indexed using the Windows Indexing Service. There is not a web.config in this directory and the indexing service is not indexing the parent directory which is the site root. Something…
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