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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, EXASOL, FIREBIRD, H2, HANA, HSQLDB, IGNITE, INGRES, MARIADB, ORACLE, POSTGRES, REDSHIFT, -- SNOWFLAKE, TERADATA, VERTICA extract(HOUR FROM TIMESTAMP '2020-02-03 15:30:45.0') -- BIGQUERY extract(HOUR FROM DATETIME'2020-02-03 15:30:45.0') -- CUBRID 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 DATETIME(2020-02-03 15:30:45.0) YEAR TO FRACTION::DATETIME HOUR TO HOUR::CHAR(2)::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 3.15, see #10141)
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