Teradata Conversion Syntax - Advanced SQL Engine - Teradata Database

SQL Data Types and Literals

Product
Advanced SQL Engine
Teradata Database
Release Number
17.05
17.00
Published
June 2020
Language
English (United States)
Last Update
2021-01-22
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B035-1143
lifecycle
previous
Product Category
Teradata Vantageā„¢
timestamp_expression (
  [ data_attribute [,...] ] DATE
  
  [ AT { LOCAL | SOURCE [ TIME ZONE ] |
         [ TIME ZONE ] { expression | time_zone_string }
       }
  ]
  
  [, data_attribute [,...] ]
)
timestamp_expression

The timestamp expression to be converted.

data_attribute
One of the following data attributes:
  • FORMAT
  • NAMED
  • TITLE
AT LOCAL

Use the time zone displacement based on the current session time zone.

AT SOURCE [TIME ZONE]
Use the time zone associated with timestamp_expression when:
  • AT SOURCE TIME ZONE is specified.
  • AT SOURCE is specified without TIME ZONE and there is no column named source in the scope.

Otherwise, if AT SOURCE is specified without TIME ZONE and a column named source exists, then SOURCE references this column, and the value of the column is used as the time zone displacement for the CAST. If needed, the column value is implicitly converted to type INTERVAL HOUR(2) TO MINUTE.

AT [TIME ZONE] expression

Use the time zone displacement defined by expression.

The data type of expression should be INTERVAL HOUR(2) TO MINUTE or it must be a data type that can be implicitly converted to INTERVAL HOUR(2) TO MINUTE.

AT [TIME ZONE] time_zone_string
time_zone_string determines the time zone displacement.