TO_TIMESTAMPTZ

You are looking at the documentation for Firebolt’s redesigned date and timestamp types. These types were introduced in DB version 3.19 under the names PGDATE, TIMESTAMPNTZ and TIMESTAMPTZ, and synonyms DATE, TIMESTAMP and TIMESTAMPTZ made available in DB version 3.22.

If you worked with Firebolt before DB version 3.22, you might still be using the legacy date and timestamp types. Determine which types you are using by executing the query SELECT EXTRACT(CENTURY FROM DATE '2023-03-16');. If this query returns a result, you are using the redesigned date and timestamp types and can continue with this documentation. If this query returns an error, you are using the legacy date and timestamp types and can find legacy documentation here, or instructions to use the new types here.

Converts the number of seconds since the Unix epoch to a TIMESTAMPTZ value.

Syntax

TO_TIMESTAMPTZ(<value>)

Parameters

Parameter	Description	Supported input types
`<value>`	A numeric expression to convert. The number left of the decimal separator is interpreted as the number of seconds before or after the Unix epoch `1970-01-01 00:00:00 UTC`. The fractional part (if present) is interpreted as subseconds.	`INTEGER`, `BIGINT`, `NUMERIC`, `DOUBLE PRECISION`

Return Type

TIMESTAMPTZ

Remarks

TO_TIMESTAMPTZ is the inverse function of EXTRACT(EPOCH FROM TIMESTAMPTZ).

Example

The following example assumes that the current Unix timestamp is 2023-03-03 14:42:31.123456 UTC.

SELECT TO_TIMESTAMPTZ(EXTRACT(EPOCH FROM CURRENT_TIMESTAMPTZ)) = CURRENT_TIMESTAMPTZ;  --> true

SET time_zone = 'Europe/Berlin';

SELECT TO_TIMESTAMPTZ(42::INTEGER);  --> 1970-01-01 01:00:42+01
SELECT TO_TIMESTAMPTZ(-9876543210::BIGINT);  --> 1657-01-09 04:39:58+00:53:28
SELECT TO_TIMESTAMPTZ(42.123456::DOUBLE PRECISION);  --> 1970-01-01 01:00:42.123456+01
SELECT TO_TIMESTAMPTZ(42.123456::NUMERIC(38, 9));  --> 1970-01-01 01:00:42.123456+01