Available in versions: Dev (3.21) | Latest (3.20) | 3.19 | 3.18 | 3.17 | 3.16 | 3.15 | 3.14 | 3.13 | 3.12 | 3.11
NVL
Applies to ✅ Open Source Edition ✅ Express Edition ✅ Professional Edition ✅ Enterprise Edition
The NVL() function (or also the ISNULL() or IFNULL() functions) produces the first argument if it is NOT NULL, otherwise the second argument. It is a special case of the COALESCE function, which takes any number of arguments.
SELECT nvl(null, 1);
create.select(nvl(null, 1)).fetch();
The result being
+-----+ | nvl | +-----+ | 1 | +-----+
Dialect support
This example using jOOQ:
nvl(null, 1)
Translates to the following dialect specific expressions:
Access
iif(NULL IS NULL, 1, NULL)
ASE, Aurora Postgres, CockroachDB, DuckDB, Exasol, Firebird, Hana, Postgres, Redshift, SQLDataWarehouse, SQLServer, Snowflake, Sybase, Teradata, Trino, Vertica, YugabyteDB
coalesce( NULL, 1 )
Aurora MySQL, BigQuery, ClickHouse, MariaDB, MemSQL, MySQL, SQLite
ifnull( NULL, 1 )
DB2, Databricks, H2, HSQLDB, Informix, Oracle
nvl( NULL, 1 )
Derby
coalesce( ?, 1 )
Generated with jOOQ 3.21. Support in older jOOQ versions may differ. Translate your own SQL on our website
Feedback
Do you have any feedback about this page? We'd love to hear it!