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')

-- POSTGRES
date_trunc('year', DATE '2020-02-03')

-- ACCESS, ASE, AURORA_MYSQL, AURORA_POSTGRES, COCKROACHDB, DERBY, FIREBIRD, H2, HANA, IGNITE, INFORMIX, INGRES, MARIADB, 
-- MEMSQL, MYSQL, REDSHIFT, SNOWFLAKE, SQLDATAWAREHOUSE, SQLITE, SQLSERVER, SYBASE, TERADATA, VERTICA
/* UNSUPPORTED */

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

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

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