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COALESCE
Applies to ✅ Open Source Edition ✅ Express Edition ✅ Professional Edition ✅ Enterprise Edition
The COALESCE() function produces the first non-NULL value from the variadic list of arguments.
SELECT coalesce(null, null, 1);
create.select(coalesce(null, null, 1)).fetch();
The result being
+----------+ | coalesce | +----------+ | 1 | +----------+
Dialect support
This example using jOOQ:
coalesce(null, null, 1)
Translates to the following dialect specific expressions:
-- ACCESS, ASE, AURORA_MYSQL, AURORA_POSTGRES, BIGQUERY, COCKROACHDB, DB2, DUCKDB, EXASOL, FIREBIRD, H2, HANA, HSQLDB,
-- MARIADB, MEMSQL, MYSQL, ORACLE, POSTGRES, REDSHIFT, SNOWFLAKE, SQLDATAWAREHOUSE, SQLITE, SQLSERVER, SYBASE, TERADATA,
-- TRINO, VERTICA, YUGABYTEDB
coalesce(NULL, NULL, 1)
-- DERBY
coalesce(?, ?, 1)
-- INFORMIX
nvl(
nvl(
NULL,
NULL
),
1
)
(These are currently generated with jOOQ 3.19, see #10141), or translate your own on our website
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