Oracle and Microsoft SQL Server are very different than each other and if you are migrating SQL queries or database, tables from Oracle 11g database to Microsoft 2008 SQL server than you are bound to face some issues. Main reason of these porting issues are features, which are supported and exists in Oracle database, but not available in Microsoft SQL Server 2008 like SEQUENCE, Order by clause in sub queries and derived tables, derived table without name etc. I am sure there are few more and it will surface based upon different database objects you are using in your tables and queries. On other hand SQL Engine for SQL Server and Sybase are very much similar, at least syntactically, and if you are migrating queries from SQL Server to Sybase you can do that without much hassle, of course there will be slight changes but not as much like Oracle. So if you are migrating from Oracle to Sybase or SQL Server its most likely same job and you should first start with either SQL Server or Sybase ASE and than later migrate them from each other. In this Oracle and SQL Server tutorial we will see couple of examples, where Oracle and SQL Server are different and how to change those SQL queries so that it can run on Microsoft SQL Server. By the way I have also written couple of post on queries like 10 ways to use SQL SELECT queriesand Don’t delete, truncate it. If you like reading more on SQL queries than those are for you.
Migrating SQL Query from Oracle to SQL Server 2008 or Sybase
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