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

     CREATE HASH INDEX line_hidx_3 (l_shipdate) ON lineitem
     ORDER BY VALUES;

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_3 AS
      SELECT (l_orderkey), (l_shipdate, lineitem.ROWID) 
      FROM lineitem
      ORDER BY l_orderkey
     PRIMARY INDEX (l_orderkey);