What is a Top N query?

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 top query in SQL?

The SQL SELECT TOP Clause The SELECT TOP clause is used to specify the number of records to return. The SELECT TOP clause is useful on large tables with thousands of records. Returning a large number of records can impact performance. Note: Not all database systems support the SELECT TOP clause.

WHAT IS TOP N in Oracle?

Top-N queries provide a method for limiting the number of rows returned from ordered sets of data. They are extremely useful when you want to return the top or bottom "N" number of rows from a set or when you are paging through data.

What is top in Oracle SQL?

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.