16.20 - Example: Partitioning Expression That Specifies AT LOCAL Date - Teradata Database - Teradata Vantage NewSQL Engine

Teradata Vantage™ SQL Data Definition Language Syntax and Examples

Product
Teradata Database
Teradata Vantage NewSQL Engine
Release Number
16.20
Published
March 2019
Language
English (United States)
Last Update
2019-05-24
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Assume that column ts has a TIMESTAMP(0) without time zone data type and the current session time zone is INTERVAL '04:00' HOUR TO MINUTE when the table that contains column ts is created with the following PARTITION BY clause. The RANGE_N function has an INTEGER data type.

     PARTITION BY RANGE_N(CAST(ts AS DATE AT LOCAL) 
                          BETWEEN DATE '2003-01-01' 
                          AND     DATE '2009-12-31'
                          EACH INTERVAL '1' MONTH)

Teradata Database implicitly rewrites this partitioning expression, replacing LOCAL with a specific time zone as follows.

     PARTITION BY RANGE_N(CAST(ts AS DATE AT '04:00') 
                          BETWEEN DATE '2003-01-01' 
                          AND DATE '2009-12-31'
                          EACH INTERVAL '1' MONTH)