Learn what the ROW_NUMBER function is, how to use it, and what are some use cases and limitations for DBAs who need to manipulate and analyze data with SQL queries.

Couple this with the concept of correlated-subqueries (the process of running a "child" query for each row in the "parent" resultset), and you can get pretty much anything you want with 'simple' SQL.

If you now try to use the View Native Query option on either the Removed Other Columns or Filtered Rows steps you’ll find it’s greyed out, indicating query folding is not taking place for those steps: ...

There will be requirement where you might need to select the first n rows, or do pagination in oracle. this can be achieved using rownum. lets create sample table and data to understand the ...

As an example, SQL was the first programming language to return multiple rows per single request. This makes it easier to get data on what is taking place within a set of data—and consequently ...