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Aziz ur Rahman

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Oracle - Performing Top-N Queries
The task of retrieving the top or bottom N rows from a database table (by salary, sales amount, credit, etc.) is often referred to as a "top-N query." This task is fairly common in application development. As you might know that there is NO top clause Read More...
Oracle - Rename a Table Column Without Any Data Manipulation
As counterintuitive as it is, Oracle databases have no SQL command for assigning a new name to a table column yet they have such a command for renaming an entire table. So, when I peruse Oracle database discussion groups, I frequently see the question Read More...