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

SQL Data Definition Language Syntax and Examples

Product
Advanced SQL Engine
Teradata Database
Release Number
17.00
Published
September 2020
Language
English (United States)
Last Update
2021-01-23
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dita:id
B035-1144
lifecycle
previous
Product Category
Teradata Vantage™

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);