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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:
Aurora Postgres, CockroachDB, Postgres, Vertica
date_trunc('year', DATE '2020-02-03')
BigQuery
date_trunc( DATE '2020-02-03', YEAR )
DB2, Oracle
trunc(DATE '2020-02-03', 'YYYY')
H2
PARSEDATETIME(FORMATDATETIME(DATE '2020-02-03', 'yyyy'), 'yyyy')
HSQLDB
trunc(DATE '2020-02-03', 'YY')
Informix
trunc(DATETIME(2020-02-03) YEAR TO DAY, 'YEAR')
ASE, Access, Aurora MySQL, ClickHouse, Derby, DuckDB, Exasol, Firebird, Hana, MariaDB, MemSQL, MySQL, Redshift, SQLDataWarehouse, SQLServer, SQLite, Snowflake, Sybase, Teradata, Trino, YugabyteDB
/* UNSUPPORTED */
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