Example: Hash Index With Checksum - 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 created with disk I/O checksum ON:
     CREATE HASH INDEX line_hidx_6, CHECKSUM=ON 
       (l.shipdate) ON lineitem
     BY (l_shipdate)
     ORDER BY VALUES;
This creates an index that is equivalent in structure to the following join index:
     CREATE JOIN INDEX line_jidx_6, CHECKSUM=ON AS
      SELECT (l_orderkey), (l_shipdate, lineitem.ROWID) 
      FROM lineitem
      ORDER BY l_orderkey
     PRIMARY INDEX (l_shipdate);