17.05 - Example: Creating a Hash Index According to Order Date by Order ID - Advanced SQL Engine - Teradata Database

Teradata Vantage™ - SQL Data Definition Language Syntax and Examples

Advanced SQL Engine
Teradata Database
Release Number
Release Date
January 2021
Content Type
Programming Reference
Publication ID
English (United States)

The following hash index is distributed on o_orderkey (the primary index for the base table Orders) and stored in value order on o_orderkey (the order key for the base table orders):

     CREATE HASH INDEX ord_hidx_3 (o_orderdate) ON orders

Note that the ordering column of the base table complies with the rules that it be limited to a single numeric column four or fewer bytes in length.

This creates an index that is equivalent in structure to the following join index:

     CREATE JOIN INDEX ord_jidx_3 AS
      SELECT o_orderkey, o_orderdate, orders.ROWID 
      FROM orders
      ORDER BY o_orderkey
     PRIMARY INDEX (o_orderkey);