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DATEDIFF
Applies to ✅ Open Source Edition ✅ Express Edition ✅ Professional Edition ✅ Enterprise Edition
Subtract two SQL DATE types (represented by java.sql.Date).
This function comes in two flavours:
MySQL 2 argument version
In MySQL, there is a 2 argument verison of the DATEDIFF() function, where the result produces the number of days between the two dates. The argument order is in the order of the difference notation: end_date - start_date
SELECT DATEDIFF( DATE '2020-02-03', DATE '2020-02-01');
create.select(dateDiff(
Date.valueOf("2020-02-03"),
Date.valueOf("2020-02-01"))).fetch();
The result being
+------------+ | datediff | +------------+ | 2 | +------------+
Dialect support
This example using jOOQ:
dateDiff(Date.valueOf("2020-02-03"), Date.valueOf("2020-02-01"))
Translates to the following dialect specific expressions:
Access
datediff('d', #2020/02/01#, #2020/02/03#)
ASE, Sybase
datediff(DAY, '2020-02-01', '2020-02-03')
Aurora MySQL, MariaDB, MySQL
datediff(DATE '2020-02-03', DATE '2020-02-01')
Aurora Postgres, CockroachDB, Oracle, Postgres, YugabyteDB
(DATE '2020-02-03' - DATE '2020-02-01')
BigQuery
date_diff(DATE '2020-02-03', DATE '2020-02-01', DAY)
ClickHouse, Teradata
CAST((DATE '2020-02-03' - DATE '2020-02-01') AS integer)
DB2
(days(DATE '2020-02-03') - days(DATE '2020-02-01'))
Derby
{fn timestampdiff(sql_tsi_day, DATE('2020-02-01'), DATE('2020-02-03')) }
DuckDB, Redshift
datediff('day', DATE '2020-02-01', DATE '2020-02-03')
Exasol
CAST((DATE '2020-02-03' - DATE '2020-02-01') AS int)
Firebird, H2, HSQLDB, Snowflake, Vertica
datediff(DAY, DATE '2020-02-01', DATE '2020-02-03')
Hana
days_between(DATE '2020-02-01', DATE '2020-02-03')
Informix
CAST((DATETIME(2020-02-03) YEAR TO DAY - DATETIME(2020-02-01) YEAR TO DAY) AS integer)
MemSQL
datediff({d '2020-02-03'}, {d '2020-02-01'})
SQLDataWarehouse, SQLServer
datediff(DAY, CAST('2020-02-01' AS date), CAST('2020-02-03' AS date))
SQLite
(strftime('%s', '2020-02-03') - strftime('%s', '2020-02-01')) / 86400
Trino
date_diff('day', DATE '2020-02-01', DATE '2020-02-03')
Generated with jOOQ 3.20. Translate your own SQL on our website
SQL Server 3 argument version
In SQL Server, there is a 3 argument verison of the DATEDIFF() function, where the result produces the number of date part periods between the two dates, with the dates being TRUNC-ed to the relevant date part. The argument order is in the order of the interval notation: [start_date, end_date]
SELECT DATEDIFF( MONTH DATE '2020-02-03', DATE '2020-04-01');
create.select(dateDiff(
DatePart.MONTH,
Date.valueOf("2020-02-03"),
Date.valueOf("2020-04-01"))).fetch();
The result being
+------------+ | datediff | +------------+ | 2 | +------------+
Notice the truncation happening prior to calculating the difference. The result is the same as for:
SELECT DATEDIFF( MONTH DATE '2020-02-01', DATE '2020-04-01');
create.select(dateDiff(
DatePart.MONTH,
Date.valueOf("2020-02-01"),
Date.valueOf("2020-04-01"))).fetch();
Dialect support
This example using jOOQ:
dateDiff(DatePart.MONTH, Date.valueOf("2020-02-03"), Date.valueOf("2020-04-01"))
Translates to the following dialect specific expressions:
Aurora MySQL, Aurora Postgres, CockroachDB, Hana, MariaDB, MySQL, Oracle, Postgres, YugabyteDB
(((extract(YEAR FROM DATE '2020-04-01') - extract(YEAR FROM DATE '2020-02-03')) * 12) + (extract(MONTH FROM DATE '2020-04-01') - extract(MONTH FROM DATE '2020-02-03')))
BigQuery
date_diff(DATE '2020-04-01', DATE '2020-02-03', MONTH)
DB2
(((YEAR(DATE '2020-04-01') - YEAR(DATE '2020-02-03')) * 12) + (MONTH(DATE '2020-04-01') - MONTH(DATE '2020-02-03')))
Derby
(((YEAR(DATE('2020-04-01')) - YEAR(DATE('2020-02-03'))) * 12) + (MONTH(DATE('2020-04-01')) - MONTH(DATE('2020-02-03'))))
Firebird, H2, HSQLDB, Snowflake
datediff(MONTH, DATE '2020-02-03', DATE '2020-04-01')
MemSQL
(((extract(YEAR FROM {d '2020-04-01'}) - extract(YEAR FROM {d '2020-02-03'})) * 12) + (extract(MONTH FROM {d '2020-04-01'}) - extract(MONTH FROM {d '2020-02-03'})))
Redshift
datediff('month', DATE '2020-02-03', DATE '2020-04-01')
SQLDataWarehouse, SQLServer
datediff(MONTH, CAST('2020-02-03' AS date), CAST('2020-04-01' AS date))
ASE, Access, ClickHouse, DuckDB, Exasol, Informix, SQLite, Sybase, Teradata, Trino, Vertica
/* UNSUPPORTED */
Generated with jOOQ 3.20. Translate your own SQL on our website
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