DAY

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

Extract the DAY value from a datetime value.

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

SELECT day(DATE '2020-02-03');

create.select(day(Date.valueOf("2020-02-03"))).fetch();

The result being

+-----+
| day |
+-----+
|   3 |
+-----+

Dialect support

This example using jOOQ:

day(Date.valueOf("2020-02-03"))

Translates to the following dialect specific expressions:

-- ACCESS
datepart('d', #2020/02/03 00:00:00#)

-- ASE, SYBASE
datepart(dd, '2020-02-03 00:00:00.0')

-- AURORA_MYSQL, MEMSQL, MYSQL
extract(DAY FROM {ts '2020-02-03 00:00:00.0'})

-- AURORA_POSTGRES, COCKROACHDB, FIREBIRD, H2, HANA, HSQLDB, IGNITE, INGRES, MARIADB, ORACLE, POSTGRES, REDSHIFT, SNOWFLAKE, 
-- TERADATA, VERTICA
extract(DAY FROM TIMESTAMP '2020-02-03 00:00:00.0')

-- CUBRID
extract(DAY FROM DATETIME '2020-02-03 00:00:00.0')

-- DB2
DAY(TIMESTAMP '2020-02-03 00:00:00.0')

-- DERBY
DAY(TIMESTAMP('2020-02-03 00:00:00.0'))

-- INFORMIX
DAY(DATETIME(2020-02-03 00:00:00.0) YEAR TO FRACTION)

-- SQLDATAWAREHOUSE, SQLSERVER
datepart(dd, CAST('2020-02-03 00:00:00.0' AS DATETIME2))

-- SQLITE
strftime('%d', '2020-02-03 00:00:00.0')

(These are currently generated with jOOQ 3.15, see #10141)

The jOOQ User Manual : SQL building : Column expressions : Datetime functions : DAY

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