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HOUR

Applies to ✅ Open Source Edition   ✅ Express Edition   ✅ Professional Edition   ✅ Enterprise Edition

Extract the HOUR value from a datetime value.

The HOUR function is a short version of the EXTRACT, passing a DatePart.HOUR value as an argument.

SELECT hour(TIMESTAMP '2020-02-03 15:30:45');
create.select(hour(Timestamp.valueOf("2020-02-03 15:30:45"))).fetch();

The result being

+------+
| hour |
+------+
|   15 |
+------+

Dialect support

This example using jOOQ:

hour(Timestamp.valueOf("2020-02-03 15:30:45"))

Translates to the following dialect specific expressions:

Access

datepart('h', #2020/02/03 15:30:45#)

ASE, Sybase

datepart(hh, '2020-02-03 15:30:45.0')

Aurora MySQL, MemSQL, MySQL

extract(HOUR FROM {ts '2020-02-03 15:30:45.0'})

Aurora Postgres, CockroachDB, DuckDB, Exasol, Firebird, H2, HSQLDB, Hana, MariaDB, Oracle, Postgres, Redshift, Snowflake, Teradata, Trino, Vertica, YugabyteDB

extract(HOUR FROM TIMESTAMP '2020-02-03 15:30:45.0')

BigQuery

extract(HOUR FROM DATETIME '2020-02-03 15:30:45.0')

DB2

HOUR(TIMESTAMP '2020-02-03 15:30:45.0')

Derby

HOUR(TIMESTAMP('2020-02-03 15:30:45.0'))

Informix

CAST(DATETIME(2020-02-03 15:30:45.0) YEAR TO FRACTION AS CAST(DATETIME HOUR TO HOUR AS CAST(CHAR(2) AS INT)))

SQLDataWarehouse, SQLServer

datepart(hh, CAST('2020-02-03 15:30:45.0' AS DATETIME2))

SQLite

CAST(strftime('%H', '2020-02-03 15:30:45.0') AS int)

(These are currently generated with jOOQ 3.20, see #10141), or translate your own on our website

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