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    <p><strong>I think this is a bug in Windows Azure SQL!</strong></p> <p>On line documentation states that you can override the collation at the database, column or expression levels. You can not do it at the server level.</p> <p><a href="http://msdn.microsoft.com/en-us/library/windowsazure/ee336245.aspx#sscs" rel="nofollow noreferrer">http://msdn.microsoft.com/en-us/library/windowsazure/ee336245.aspx#sscs</a></p> <p>Lets start with something we know will work, a local install of SQL Server 2012.</p> <pre><code>-- Start at master Use master; Go -- Create a new database CREATE DATABASE Koopa COLLATE SQL_Latin1_General_CP1_CS_AS; -- Use the new database Use Koopa; Go -- Create a new table CREATE TABLE [MyTable] ( [ColName1] NVarChar (4000) COLLATE SQL_Latin1_General_CP1_CS_AS NULL, [colname1] NVarChar (4000) COLLATE SQL_Latin1_General_CP1_CS_AS NULL ); </code></pre> <p>If we try to run the create table in the MASTER database, we get your error.</p> <p>Msg 2705, Level 16, State 3, Line 2</p> <p>Column names in each table must be unique. Column name 'colname1' in table 'MyTable' is specified more than once.</p> <p>If we run the create table in the Koopa database, it works fine. See image below. That is because MASTER is Case Insensitive CI!</p> <p><img src="https://i.stack.imgur.com/G1zwB.jpg" alt="enter image description here"></p> <p>I am going to use the Web Interface for Azure SQL database since it has nice colors (it is the web)!</p> <p>Let's create a new database with the Case Sensitive collation. Wow I am getting excited since there is an option to select our collation.</p> <p><img src="https://i.stack.imgur.com/PDdef.jpg" alt="enter image description here"></p> <p>Now that we have a new database, lets check the settings!</p> <p><img src="https://i.stack.imgur.com/Fa5ws.jpg" alt="enter image description here"></p> <p>I am still happy since we see the correct collation listed for the database. </p> <p>Lets log onto the database server directly and run a simple query to create the table.</p> <p>I am going to try the designer first!</p> <p><img src="https://i.stack.imgur.com/oc6St.jpg" alt="enter image description here"></p> <p>Oops, It did not work.</p> <p>Lets try a simple DDL statement in a query window.</p> <p><img src="https://i.stack.imgur.com/9U2XA.jpg" alt="enter image description here"></p> <p><strong>Now I am really disappointed.</strong> We were sold a bill of goods but Azure SQL did not deliver.</p> <p>In short, the documentation says you can not set the collation at the server level.</p> <p><a href="http://technet.microsoft.com/en-us/library/ms143726.aspx" rel="nofollow noreferrer">http://technet.microsoft.com/en-us/library/ms143726.aspx</a></p> <p>However, this Quote from BOL states we should be able to over ride it at the database level.</p> <p><em>Server-level collations The default server collation is set during SQL Server setup, and also becomes the default collation of the system databases and all user databases. Note that Unicode-only collations cannot be selected during SQL Server setup because they are not supported as server-level collations.</em></p> <p><img src="https://i.stack.imgur.com/nVAZI.jpg" alt="enter image description here"></p> <p>In short, I am extremely busy with a couple speaking engagements for PASS the next 7 days. I will have to open a bug report or see if there is one already open.</p> <p>Good find!! </p> <p>BTW - You now need to use distinct column names.</p>
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