| The jOOQ User Manual : SQL building : Column expressions : Datetime functions : TRUNC | previous : next |
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TRUNC
Applies to ✅ Open Source Edition ✅ Express Edition ✅ Professional Edition ✅ Enterprise Edition
Truncate a datetime value to the precision of a certain org.jooq.DatePart, or DatePart.DAY by default.
SELECT TRUNC(DATE '2020-02-03', 'YYYY');
create.select(trunc(Date.valueOf("2020-02-03", DatePart.YEAR))).fetch();
The result being
+------------+ | trunc | +------------+ | 2020-01-01 | +------------+
Dialect support
This example using jOOQ:
trunc(Date.valueOf("2020-02-03"), DatePart.YEAR)
Translates to the following dialect specific expressions:
-- CUBRID, HSQLDB
trunc(DATE '2020-02-03', 'YY')
-- DB2, ORACLE
trunc(DATE '2020-02-03', 'YYYY')
-- H2
PARSEDATETIME(FORMATDATETIME(DATE '2020-02-03', 'yyyy'), 'yyyy')
-- INFORMIX
trunc(DATETIME(2020-02-03) YEAR TO DAY, 'YEAR')
-- POSTGRES, VERTICA
date_trunc('year', DATE '2020-02-03')
-- ACCESS, ASE, AURORA_MYSQL, AURORA_POSTGRES, COCKROACHDB, DERBY, FIREBIRD, HANA, INGRES, MARIADB, MEMSQL, MYSQL, REDSHIFT,
-- SQLDATAWAREHOUSE, SQLITE, SQLSERVER, SYBASE, TERADATA
/* UNSUPPORTED */
(These are currently generated with jOOQ 3.14, see #10141)
