What is top n analysis in SQL?

Question

TOP-N analysis is used to limit the number of rows returned from an ordered set of data items. This are very useful when you would like to return the N lowest or highest rows. You can use the keyword PERCENT to receive a certain percentage of the data, rather than an arbitrary number of rows.

WHAT IS TOP N in SQL?

Top-N Analysis in SQL deals with How to limit the number of rows returned from ordered sets of data in SQL. most records from a table based on a condition. This result set can be used for further analysis.

What is a Top N query?

Top-N queries are queries that limit the result to a specific number of rows. These are often queries for the most recent or the “best” entries of a result set. For efficient execution, the ranking must be done with a pipelined order by .

Which SQL keyword is used to do ranking in top n analysis?

The SQL TOP clause is used to fetch a TOP N number or X percent records from a table. Note − All the databases do not support the TOP clause. For example MySQL supports the LIMIT clause to fetch limited number of records while Oracle uses the ROWNUM command to fetch a limited number of records.

What is top query in SQL?

Description. The SQL SELECT TOP statement is used to retrieve records from one or more tables in a database and limit the number of records returned based on a fixed value or percentage. TIP: SELECT TOP is Microsoft's proprietary version to limit your results and can be used in databases such as SQL Server and MSAccess ...

Expert · Answer