15.00 - TOP n and TOP m PERCENT Clause Usage - Teradata Database

Teradata Database SQL Data Definition Language Detailed Topics

Product
Teradata Database
Release Number
15.00
Content Type
Programming Reference
Publication ID
B035-1184-015K
Language
English (United States)

TOP n and TOP m PERCENT Clause Usage

You can restrict a view to only n rows or m percent of the rows in an underlying base table by specifying a TOP n or TOP m PERCENT clause, respectively, in the view definition. This option provides a fast method to obtain a restricted, statistically non‑random sample of table rows without scanning the entire table. For example, you might create a view that specifies only the top 10 rows, or only the top 10 percent of the rows, from an orders table.