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NVL2
Applies to ✅ Open Source Edition ✅ Express Edition ✅ Professional Edition ✅ Enterprise Edition
The NVL2() function checks if the first argument is NOT NULL to produce the second argument, or the third argument otherwise. It works in a similar way as the IIF function or the CASE expression
SELECT nvl2(1, 2, 3), nvl2(null, 2, 3);
create.select( nvl2(val(1) , 2, 3), nvl2(val((Integer) null), 2, 3)).fetch();
The result being
+------+------+ | nvl2 | nvl2 | +------+------+ | 2 | 3 | +------+------+
Dialect support
This example using jOOQ:
nvl2(val(1), 2, 3)
Translates to the following dialect specific expressions:
Access, SQLServer
iif(1 IS NOT NULL, 2, 3)
ASE, Aurora MySQL, Aurora Postgres, BigQuery, ClickHouse, CockroachDB, Derby, DuckDB, Firebird, Hana, MemSQL, MySQL, Postgres, SQLDataWarehouse, SQLite, Sybase, Trino, YugabyteDB
CASE WHEN 1 IS NOT NULL THEN 2 ELSE 3 END
DB2, Exasol, H2, HSQLDB, Informix, MariaDB, Oracle, Redshift, Snowflake, Teradata, Vertica
nvl2(1, 2, 3)
Generated with jOOQ 3.20. Translate your own SQL on our website
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