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

-- BIGQUERY
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
CAST(strftime('%d', '2020-02-03 00:00:00.0') AS int)

(These are currently generated with jOOQ 3.16, see #10141), or translate your own on our website

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