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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
truncate(CAST(1.7E0 AS decimal), 0)
Aurora Postgres, Postgres
CAST(trunc( CAST(1.7E0 AS numeric), 0 ) AS double precision)
DB2
trunc(CAST(1.7E0 AS double), 0)
Derby
CASE WHEN sign(1.7E0) >= 0 THEN (floor((1.7E0 * 1)) / 1) ELSE (ceil((1.7E0 * 1)) / 1) END
Firebird
trunc(CAST(1.7E0 AS double precision), 0)
H2
truncate(CAST(1.7E0 AS double), 0)
Hana
round(1.7E0, 0, round_down)
HSQLDB, Informix, Oracle, Teradata, Vertica
trunc(1.7E0, 0)
MariaDB, MemSQL, MySQL
truncate(1.7E0, 0)
SQLDataWarehouse, SQLServer
round(CAST(1.7E0 AS float), 0, 1)
Sybase
truncnum(1.7E0, 0)
Access, BigQuery, ClickHouse, CockroachDB, Databricks, DuckDB, Exasol, Redshift, SQLite, Snowflake, Trino, YugabyteDB
/* UNSUPPORTED */
Generated with jOOQ 3.21. Support in older jOOQ versions may differ. Translate your own SQL on our website
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