Timestamp types

timestamp and timestamp with time zone data expresses a date and time in UTC.

timestamp info

timestamp with time zone info

Syntax

Details

• timestamp and timestamp with time zone store data in UTC.
• The difference between the two types is that timestamp with time zone can read or write timestamps with the offset specified by the timezone. Importantly, timestamp with time zone itself doesn’t store any timezone data; Materialize simply performs the conversion from the time provided and UTC.
• Materialize assumes all clients expect UTC time, and does not currently support any other timezones.

Valid casts

In addition to the casts listed below, timestamp and timestamptz can be cast to and from each other implicitly.

From timestamp or timestamptz

You can cast timestamp or timestamptz to:

• date (by assignment)
• text (by assignment)
• time (by assignment)

To timestamp or timestamptz

You can cast the following types to timestamp or timestamptz:

• date (implicitly)
• text (explicitly)

Valid operations

timestamp and timestamp with time zone data (collectively referred to as timestamp/tz) supports the following operations with other types.

Examples

Return timestamp

SELECT TIMESTAMP '2007-02-01 15:04:05' AS ts_v;

        ts_v
---------------------
 2007-02-01 15:04:05

Return timestamp with time zone

SELECT TIMESTAMPTZ '2007-02-01 15:04:05+06' AS tstz_v;

         tstz_v
-------------------------
 2007-02-01 09:04:05 UTC

Related topics

• TIMEZONE and AT TIME ZONE functions