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

Teradata Vantage™ - SQL Data Definition Language Syntax and Examples

Product
Advanced SQL Engine
Teradata Database
Release Number
17.00
Release Date
September 2020
Content Type
Programming Reference
Publication ID
B035-1144-170K
Language
English (United States)

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

     CREATE HASH INDEX ord_hidx_6 (o_orderdate) ON orders 
     BY (o_orderdate) 
     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_6 AS
      SELECT o_orderkey, o_orderdate, orders.ROWID 
      FROM orders
      ORDER BY o_orderkey
     PRIMARY INDEX (o_orderdate);