Available in versions: Dev (3.20) | Latest (3.19) | 3.18 | 3.17 | 3.16 | 3.15 | 3.14 | 3.13 | 3.12 | 3.11 | 3.10

TRUNC

Applies to ✅ Open Source Edition   ✅ Express Edition   ✅ Professional Edition   ✅ Enterprise Edition

The TRUNC() function rounds a numeric value to its nearest integer (or optionally, to a specific decimal precision) that is closer to zero.

SELECT
  trunc(1.7),
  trunc(-1.7);
create.select(
  trunc(1.7),
  trunc(-1.7)).fetch();

The result being

+-------+-------+
| trunc | trunc |
+-------+-------+
|     1 |    -1 |
+-------+-------+

Dialect support

This example using jOOQ:

trunc(1.7)

Translates to the following dialect specific expressions:

ASE

CASE
  WHEN sign(1.7E0) >= 0 THEN (floor((1.7E0 * 1)) / 1)
  ELSE (ceiling((1.7E0 * 1)) / 1)
END

Aurora MySQL, MariaDB, MemSQL, MySQL

truncate(1.7E0, 0)

Aurora Postgres, Postgres

CAST(trunc(
  CAST(1.7E0 AS numeric),
  0
) AS double precision)

DB2, Firebird, HSQLDB, Informix, Oracle, Teradata, Vertica

trunc(1.7E0, 0)

Derby

CASE
  WHEN sign(1.7E0) >= 0 THEN (floor((1.7E0 * 1)) / 1)
  ELSE (ceil((1.7E0 * 1)) / 1)
END

H2

truncate(CAST(1.7E0 AS double), 0)

Hana

round(1.7E0, 0, round_down)

SQLDataWarehouse, SQLServer

round(1.7E0, 0, 1)

Sybase

truncnum(1.7E0, 0)

Access, BigQuery, CockroachDB, DuckDB, Exasol, Redshift, SQLite, Snowflake, Trino, YugabyteDB

/* UNSUPPORTED */

(These are currently generated with jOOQ 3.20, see #10141), or translate your own on our website

Feedback

Do you have any feedback about this page? We'd love to hear it!

The jOOQ Logo