Extracts the specified date or time part from a date, time, or timestamp.
EXTRACT , HOUR / MINUTE / SECOND , YEAR* / DAY* / WEEK* / MONTH / QUARTER
DATE_PART( <date_or_time_part> , <date_time_or_timestamp_expr> )
Copy
DATE_PART( <date_or_time_part> FROM <date_time_or_timestamp_expr> )
Copy
Arguments¶date_or_time_part
The unit of time. Must be one of the values listed in Supported date and time parts (e.g. month). The value can be a string literal or can be unquoted (for example, 'month' or month).
When date_or_time_part is week (or any of its variations), the output is controlled by the WEEK_START session parameter.
When date_or_time_part is dayofweek or yearofweek (or any of their variations), the output is controlled by the WEEK_OF_YEAR_POLICY and WEEK_START session parameters.
For more information, including examples, see Calendar weeks and weekdays.
date_time_or_timestamp_expr
A date, a time, or a timestamp, or an expression that can be evaluated to a date, a time, or a timestamp.
Returns a value of NUMBER data type.
Usage notes¶Currently, when date_or_timestamp_expr is a DATE value, the following date_or_time_part values are not supported:
epoch_millisecond
epoch_microsecond
epoch_nanosecond
Other date and time parts (including epoch_second) are supported.
This shows a simple example of extracting part of a DATE:
SELECT DATE_PART(quarter, '2024-04-08'::DATE);
Copy
+----------------------------------------+ | DATE_PART(QUARTER, '2024-04-08'::DATE) | |----------------------------------------| | 2 | +----------------------------------------+
This shows an example of extracting part of a TIMESTAMP:
SELECT TO_TIMESTAMP( '2024-04-08T23:39:20.123-07:00') AS "TIME_STAMP1", DATE_PART(year, "TIME_STAMP1") AS "EXTRACTED YEAR";
Copy
+-------------------------+----------------+ | TIME_STAMP1 | EXTRACTED YEAR | |-------------------------+----------------| | 2024-04-08 23:39:20.123 | 2024 | +-------------------------+----------------+
This shows an example of converting a TIMESTAMP to the number of seconds since the beginning of the Unix epoch (midnight January 1, 1970):
SELECT TO_TIMESTAMP( '2024-04-08T23:39:20.123-07:00') AS "TIME_STAMP1", DATE_PART(epoch_second, "TIME_STAMP1") AS "EXTRACTED EPOCH SECOND";
Copy
+-------------------------+------------------------+ | TIME_STAMP1 | EXTRACTED EPOCH SECOND | |-------------------------+------------------------| | 2024-04-08 23:39:20.123 | 1712619560 | +-------------------------+------------------------+
This shows an example of converting a TIMESTAMP to the number of milliseconds since the beginning of the Unix epoch (midnight January 1, 1970):
SELECT TO_TIMESTAMP( '2024-04-08T23:39:20.123-07:00') AS "TIME_STAMP1", DATE_PART(epoch_millisecond, "TIME_STAMP1") AS "EXTRACTED EPOCH MILLISECOND";
Copy
+-------------------------+-----------------------------+ | TIME_STAMP1 | EXTRACTED EPOCH MILLISECOND | |-------------------------+-----------------------------| | 2024-04-08 23:39:20.123 | 1712619560123 | +-------------------------+-----------------------------+
RetroSearch is an open source project built by @garambo | Open a GitHub Issue
Search and Browse the WWW like it's 1997 | Search results from DuckDuckGo
HTML:
3.2
| Encoding:
UTF-8
| Version:
0.7.4