17.10 - 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

Product
Advanced SQL Engine
Teradata Database
Release Number
17.10
Release Date
July 2021
Content Type
Programming Reference
Publication ID
B035-1144-171K
Language
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
     ORDER BY VALUES;

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);