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	<title>Sachin Jain &#187; SQL Server 2005</title>
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		<title>Unique constraints for LARGE TEXT columns &#8211; SQL</title>
		<link>http://www.sachinjain.me/2009/11/unique-constraints-for-large-text-columns-sql/</link>
		<comments>http://www.sachinjain.me/2009/11/unique-constraints-for-large-text-columns-sql/#comments</comments>
		<pubDate>Thu, 05 Nov 2009 15:33:32 +0000</pubDate>
		<dc:creator>Sachin Jain</dc:creator>
				<category><![CDATA[SQL Server]]></category>
		<category><![CDATA[SQL Server 2005]]></category>
		<category><![CDATA[SQL Server 2008]]></category>
		<category><![CDATA[unique constraint]]></category>

		<guid isPermaLink="false">http://www.sachinjain.me/?p=141</guid>
		<description><![CDATA[






Suppose you are storing URL in your table and you want to apply UNIQUE contraint but as SQL allows only 900 byte limit. how can you put unique constraint for larger text ??
For this you can create a computed CHECKSUM column which is an integer vale and put constraint on it.
Example as follows
CREATE TABLE messages [...]]]></description>
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		<title>preventing select * from the query in SQL</title>
		<link>http://www.sachinjain.me/2009/11/preventing-select-from-the-query-in-sql/</link>
		<comments>http://www.sachinjain.me/2009/11/preventing-select-from-the-query-in-sql/#comments</comments>
		<pubDate>Thu, 05 Nov 2009 14:22:48 +0000</pubDate>
		<dc:creator>Sachin Jain</dc:creator>
				<category><![CDATA[SQL Server]]></category>
		<category><![CDATA[SQL Server 2005]]></category>
		<category><![CDATA[SQL Server 2008]]></category>
		<category><![CDATA[preventing select *]]></category>

		<guid isPermaLink="false">http://www.sachinjain.me/?p=139</guid>
		<description><![CDATA[For Team Leads, Developer don&#8217;t listen what you say   still using * in their select queries. You can restrict them using * by using deny select on object. 
This all you can do by create a dummy column in table and deny it for selection. Now user can select the rest of the [...]]]></description>
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		<title>Creating web services in SQL server</title>
		<link>http://www.sachinjain.me/2009/10/creating-web-services-in-sql-server/</link>
		<comments>http://www.sachinjain.me/2009/10/creating-web-services-in-sql-server/#comments</comments>
		<pubDate>Thu, 15 Oct 2009 15:11:25 +0000</pubDate>
		<dc:creator>Sachin Jain</dc:creator>
				<category><![CDATA[SQL Server]]></category>
		<category><![CDATA[SQL Server 2005]]></category>
		<category><![CDATA[SQL Server 2008]]></category>
		<category><![CDATA[Web Services]]></category>

		<guid isPermaLink="false">http://www.sachinjain.me/?p=44</guid>
		<description><![CDATA[For creating web service in SQL server you need to understand http end points. So what is http end points ? It provide an interface using TCP or http for SOAP.
]]></description>
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