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	<title>Down Home Country Coding With Scott Selikoff and Jeanne Boyarsky &#187; Database</title>
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		<title>a sql quiz + is a lower hourly rate cheaper?</title>
		<link>http://www.selikoff.net/2011/02/27/a-sql-quiz-is-a-lower-hourly-rate-cheaper/</link>
		<comments>http://www.selikoff.net/2011/02/27/a-sql-quiz-is-a-lower-hourly-rate-cheaper/#comments</comments>
		<pubDate>Mon, 28 Feb 2011 00:23:37 +0000</pubDate>
		<dc:creator>Jeanne Boyarsky</dc:creator>
				<category><![CDATA[Database]]></category>
		<category><![CDATA[Development Process]]></category>
		<category><![CDATA[Java/J2EE]]></category>

		<guid isPermaLink="false">http://www.selikoff.net/?p=2731</guid>
		<description><![CDATA[Suppose you have a task to write some JDBC code and you need to do so in the cheapest way possible.  Having your people grow should not be considered here, just the rate. Person A Charges 3X per hour and can write working code on the first shot, test it and complete it within an [...]]]></description>
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		<slash:comments>10</slash:comments>
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		<title>Memo: Avoid Functions in Database Queries</title>
		<link>http://www.selikoff.net/2010/10/21/memo-avoid-functions-in-database-queries/</link>
		<comments>http://www.selikoff.net/2010/10/21/memo-avoid-functions-in-database-queries/#comments</comments>
		<pubDate>Thu, 21 Oct 2010 06:19:41 +0000</pubDate>
		<dc:creator>Scott Selikoff</dc:creator>
				<category><![CDATA[Database]]></category>
		<category><![CDATA[JDBC]]></category>
		<category><![CDATA[function]]></category>
		<category><![CDATA[functions]]></category>
		<category><![CDATA[index]]></category>
		<category><![CDATA[javaranch]]></category>
		<category><![CDATA[mysql]]></category>
		<category><![CDATA[queries]]></category>
		<category><![CDATA[query]]></category>

		<guid isPermaLink="false">http://www.selikoff.net/?p=2340</guid>
		<description><![CDATA[The most common type of questions in the JavaRanch JDBC forum tends to be about improving performance in a database (that, and &#8220;Where can I download a JDBC Driver?&#8221;). While remote trouble-shooting performance issues can be tricky, we often spot issues with the presented queries and offer alternatives to improve performance. One issue I see [...]]]></description>
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		<slash:comments>2</slash:comments>
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		<title>postgresql and jdbc</title>
		<link>http://www.selikoff.net/2010/06/13/postgresql-and-jdbc/</link>
		<comments>http://www.selikoff.net/2010/06/13/postgresql-and-jdbc/#comments</comments>
		<pubDate>Mon, 14 Jun 2010 01:30:59 +0000</pubDate>
		<dc:creator>Jeanne Boyarsky</dc:creator>
				<category><![CDATA[Database]]></category>
		<category><![CDATA[JavaRanch]]></category>
		<category><![CDATA[JDBC]]></category>
		<category><![CDATA[postgresql]]></category>

		<guid isPermaLink="false">http://www.selikoff.net/?p=1988</guid>
		<description><![CDATA[In postgresql &#8211; selecting maximum for each group, we saw the actual stored function.  That was the easy part.  Then there was dealing with Postgresql and JDBC.  I encountered a few surprises while doing this. Calling the stored function I expected to use JDBC&#8217;s CallableStatement since I was calling a stored procedure.  Nope.  The proper [...]]]></description>
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		<slash:comments>1</slash:comments>
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		<title>postgresql &#8211; selecting maximum for each group</title>
		<link>http://www.selikoff.net/2010/06/13/postgresql-selecting-maximum-for-each-group/</link>
		<comments>http://www.selikoff.net/2010/06/13/postgresql-selecting-maximum-for-each-group/#comments</comments>
		<pubDate>Mon, 14 Jun 2010 01:30:27 +0000</pubDate>
		<dc:creator>Jeanne Boyarsky</dc:creator>
				<category><![CDATA[Database]]></category>
		<category><![CDATA[JavaRanch]]></category>
		<category><![CDATA[postgresql]]></category>

		<guid isPermaLink="false">http://www.selikoff.net/?p=1983</guid>
		<description><![CDATA[I had a requirement to return the thread with the most replies in each forum at JavaRanch&#8216;s Coderanch forums.  In Postgresql 8.4, this would be very easy &#8211; just use the window functions.  Unfortunately, we aren&#8217;t on Postgresql 8.4 yet.  The other common pattern is something like This doesn&#8217;t work well for me either because [...]]]></description>
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		<slash:comments>1</slash:comments>
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		<title>normalization done poorly at the bank</title>
		<link>http://www.selikoff.net/2009/11/29/normalization-done-poorly-at-the-bank/</link>
		<comments>http://www.selikoff.net/2009/11/29/normalization-done-poorly-at-the-bank/#comments</comments>
		<pubDate>Mon, 30 Nov 2009 01:04:44 +0000</pubDate>
		<dc:creator>Jeanne Boyarsky</dc:creator>
				<category><![CDATA[Database]]></category>
		<category><![CDATA[WTFs]]></category>

		<guid isPermaLink="false">http://www.selikoff.net/?p=1491</guid>
		<description><![CDATA[I went to a bank yesterday to inquire why I was receiving mail at my old address despite having moved a number of months ago.  The first thing the representative did was pull up my record to show me that my address was correct in their system.  While that&#8217;s very nice, the mail has their [...]]]></description>
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		<slash:comments>6</slash:comments>
		</item>
		<item>
		<title>Which Database to Start With?</title>
		<link>http://www.selikoff.net/2009/08/26/which-database-to-start-with/</link>
		<comments>http://www.selikoff.net/2009/08/26/which-database-to-start-with/#comments</comments>
		<pubDate>Wed, 26 Aug 2009 06:30:35 +0000</pubDate>
		<dc:creator>Scott Selikoff</dc:creator>
				<category><![CDATA[Database]]></category>
		<category><![CDATA[dbms]]></category>
		<category><![CDATA[education]]></category>
		<category><![CDATA[Java/J2EE]]></category>
		<category><![CDATA[learning]]></category>
		<category><![CDATA[sql]]></category>

		<guid isPermaLink="false">http://www.selikoff.net/blog/?p=1160</guid>
		<description><![CDATA[When people ask me how to learn to use a database or how to write SQL queries, I tell them to pick a database system and immerse themselves in it. In fact that advice goes for a lot of software technologies: just immerse yourself in a language, as programming tutorials are easy to come by [...]]]></description>
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		<slash:comments>14</slash:comments>
		</item>
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		<title>The Joy of Null:  Continued</title>
		<link>http://www.selikoff.net/2009/04/16/the-joy-of-null-continued/</link>
		<comments>http://www.selikoff.net/2009/04/16/the-joy-of-null-continued/#comments</comments>
		<pubDate>Thu, 16 Apr 2009 18:10:05 +0000</pubDate>
		<dc:creator>Scott Selikoff</dc:creator>
				<category><![CDATA[Database]]></category>
		<category><![CDATA[Java/J2EE]]></category>
		<category><![CDATA[JDBC]]></category>

		<guid isPermaLink="false">http://www.selikoff.net/blog/?p=875</guid>
		<description><![CDATA[In Part 1 of The Joy of Null I discussed a variety of ways null-equivalent values make it into the software design. Often times, developer laziness or immutability of the database tier drives many developers to insert values that simulate null values, rather than using a database null itself. In this second half, I&#8217;ll talk [...]]]></description>
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		<slash:comments>0</slash:comments>
		</item>
		<item>
		<title>The Joy of Null</title>
		<link>http://www.selikoff.net/2009/04/07/the-joy-of-null/</link>
		<comments>http://www.selikoff.net/2009/04/07/the-joy-of-null/#comments</comments>
		<pubDate>Tue, 07 Apr 2009 16:56:46 +0000</pubDate>
		<dc:creator>Scott Selikoff</dc:creator>
				<category><![CDATA[Database]]></category>
		<category><![CDATA[Java/J2EE]]></category>
		<category><![CDATA[JDBC]]></category>

		<guid isPermaLink="false">http://www.selikoff.net/blog/?p=852</guid>
		<description><![CDATA[Often in the database world, you do not have all the information needed to create a record. For example, you may have a person&#8217;s full name but not their middle name or initial, or you might be missing their date of birth. In such cases, the recommended solution is to fill that field with a [...]]]></description>
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		<slash:comments>8</slash:comments>
		</item>
		<item>
		<title>Making MySQL Use More Memory:  Part 2</title>
		<link>http://www.selikoff.net/2009/03/26/making-mysql-use-more-memory-part-2/</link>
		<comments>http://www.selikoff.net/2009/03/26/making-mysql-use-more-memory-part-2/#comments</comments>
		<pubDate>Thu, 26 Mar 2009 08:01:48 +0000</pubDate>
		<dc:creator>Scott Selikoff</dc:creator>
				<category><![CDATA[Database]]></category>
		<category><![CDATA[myisam]]></category>
		<category><![CDATA[performance]]></category>

		<guid isPermaLink="false">http://www.selikoff.net/blog/?p=825</guid>
		<description><![CDATA[In a previous article, I discussed how to get the most out of your memory usage in MySQL systems using the InnoDB storage engine. To review, MySQL has overly conservative memory usage by default. Your MySQL instance may be using only a small fraction of the available memory, leading to unnecessarily poor application performance. In [...]]]></description>
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		<slash:comments>2</slash:comments>
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		<item>
		<title>Making MySQL Use More Memory</title>
		<link>http://www.selikoff.net/2009/01/07/making-mysql-use-more-memory/</link>
		<comments>http://www.selikoff.net/2009/01/07/making-mysql-use-more-memory/#comments</comments>
		<pubDate>Wed, 07 Jan 2009 06:59:59 +0000</pubDate>
		<dc:creator>Scott Selikoff</dc:creator>
				<category><![CDATA[Database]]></category>
		<category><![CDATA[innodb]]></category>
		<category><![CDATA[performance]]></category>

		<guid isPermaLink="false">http://www.selikoff.net/blog/?p=708</guid>
		<description><![CDATA[Unlike a lot of database servers, MySQL is strangely conservative (by default) on how much memory it will allocate. If you&#8217;re not careful, you can have 16GB of RAM on your machine with MySQL only using 50MBs, leading to extremely poor performance under heavy load. I know firsthand that navigating MySQL configuration guides can be [...]]]></description>
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		<slash:comments>4</slash:comments>
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