17.05 - Example: Creating a Hash Index According to Ship Date by Order Number - 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 explicitly on l_shipdate and stored implicitly in value order on l_orderkey, the primary index for the base table lineitem:

     CREATE HASH INDEX line_hidx_6 (l_shipdate) ON lineitem
     BY (l_shipdate) 

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 line_jidx_6 AS
      SELECT (l_orderkey), (l_shipdate, lineitem.ROWID) 
      FROM lineitem
      ORDER BY l_orderkey
     PRIMARY INDEX (l_shipdate);