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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, Databricks, Exasol, H2, HSQLDB, Informix, MariaDB, Oracle, Redshift, Snowflake, Teradata, Vertica
nvl2(1, 2, 3)
Generated with jOOQ 3.21. Support in older jOOQ versions may differ. Translate your own SQL on our website
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