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	<title>select * from depesz; &#187; gin</title>
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		<title>Understanding postgresql.conf : work_mem</title>
		<link>http://www.depesz.com/2011/07/03/understanding-postgresql-conf-work_mem/</link>
		<comments>http://www.depesz.com/2011/07/03/understanding-postgresql-conf-work_mem/#comments</comments>
		<pubDate>Sun, 03 Jul 2011 20:40:29 +0000</pubDate>
		<dc:creator>depesz</dc:creator>
				<category><![CDATA[Uncategorized]]></category>
		<category><![CDATA[configuration]]></category>
		<category><![CDATA[gin]]></category>
		<category><![CDATA[guc]]></category>
		<category><![CDATA[postgresql]]></category>
		<category><![CDATA[understanding]]></category>
		<category><![CDATA[work_mem]]></category>

		<guid isPermaLink="false">http://www.depesz.com/?p=2218</guid>
		<description><![CDATA[For todays post in Understanding postgresql.conf series, I chose work_mem parameter. Documentation describes it as: Specifies the amount of memory to be used by internal sort operations and hash tables before writing to temporary disk files. The value defaults to one megabyte (1MB). Note that for a complex query, several sort or hash operations might [...]]]></description>
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		<slash:comments>8</slash:comments>
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		<title>Waiting for 9.1 &#8211; Faster LIKE/ILIKE</title>
		<link>http://www.depesz.com/2011/02/19/waiting-for-9-1-faster-likeilike/</link>
		<comments>http://www.depesz.com/2011/02/19/waiting-for-9-1-faster-likeilike/#comments</comments>
		<pubDate>Sat, 19 Feb 2011 13:23:57 +0000</pubDate>
		<dc:creator>depesz</dc:creator>
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		<category><![CDATA[gin]]></category>
		<category><![CDATA[ilike]]></category>
		<category><![CDATA[like]]></category>
		<category><![CDATA[performance]]></category>
		<category><![CDATA[pg91]]></category>
		<category><![CDATA[pg_trgm]]></category>
		<category><![CDATA[postgresql]]></category>

		<guid isPermaLink="false">http://www.depesz.com/?p=2104</guid>
		<description><![CDATA[On 1st of February, Tom Lane committed patch: Support LIKE and ILIKE index searches via contrib/pg_trgm indexes. &#160; Unlike Btree-based LIKE optimization, this works for non-left-anchored search patterns. The effectiveness of the search depends on how many trigrams can be extracted from the pattern. (The worst case, with no trigrams, degrades to a full-table scan, [...]]]></description>
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		<slash:comments>5</slash:comments>
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		<title>Waiting for 8.4 &#8211; partial-match support in GIN, and sequence restart</title>
		<link>http://www.depesz.com/2008/05/17/waiting-for-84-partial-match-support-in-gin-and-sequence-restart/</link>
		<comments>http://www.depesz.com/2008/05/17/waiting-for-84-partial-match-support-in-gin-and-sequence-restart/#comments</comments>
		<pubDate>Sat, 17 May 2008 15:20:36 +0000</pubDate>
		<dc:creator>depesz</dc:creator>
				<category><![CDATA[Uncategorized]]></category>
		<category><![CDATA[gin]]></category>
		<category><![CDATA[pg84]]></category>
		<category><![CDATA[postgresql]]></category>
		<category><![CDATA[prefix]]></category>
		<category><![CDATA[sequence]]></category>
		<category><![CDATA[truncate]]></category>
		<category><![CDATA[tsearch]]></category>

		<guid isPermaLink="false">http://www.depesz.com/?p=1208</guid>
		<description><![CDATA[Today we have two interesting patches: patch by Teodor Sigaev and Oleg Bartunov, and committed by Tom Lane, which adds interesting capability to GIN indexes patch by Zoltan Boszormenyi, also committed by Tom, which adds &#8220;RESTART&#8221; option to ALTER SEQUENCE. With some interesting consequences Since describing patch on GIN will take much more time and [...]]]></description>
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