15.10 - Example: Creating a Hash Index According to Order Date - Teradata Database

Teradata Database SQL Data Definition Language Syntax and Examples

prodname
Teradata Database
vrm_release
15.10
created_date
December 2015
category
Programming Reference
featnum
B035-1144-151K

The following hash index is distributed on its primary index o_orderdate and stored in value order on o_orderdate.

     CREATE HASH INDEX ord_hidx_1 (o_orderdate) ON orders
     BY (o_orderdate) 
     ORDER BY (o_orderdate);

You could also specify ORDER BY VALUES instead of ORDER BY.

Note that the ORDER BY column list complies with the rules that it be limited to a single column, that the column must be in the column_name_1 list, must be a numeric type, and must be four or fewer bytes.

This creates an index that is equivalent in structure to the following single-table join index:

     CREATE JOIN INDEX ord_jidx_1 AS
      SELECT (o_orderdate), (o_orderkey, orders.ROWID) 
      FROM orders
      ORDER BY o_orderdate
     PRIMARY INDEX (o_orderdate);