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ARRAY_CONCAT (|| operator)
Applies to ✅ Open Source Edition ✅ Express Edition ✅ Professional Edition ✅ Enterprise Edition
The ARRAY_CONCAT (or ARRAY_CAT) function allows for concatenating arrays (see also ARRAY_APPEND and ARRAY_PREPEND for API to concatenate single values with arrays):
SELECT ARRAY[1, 2] || ARRAY[3, 4]
create.select(arrayConcat(array(1, 2), array(3, 4))).fetch();
The result would look like this:
+--------------+ | array_concat | +--------------+ | [1, 2, 3, 4] | +--------------+
See CONCAT for a text version of this function.
Dialect support
This example using jOOQ:
arrayConcat(array(1, 2), array(3, 4))
Translates to the following dialect specific expressions:
Aurora Postgres, BigQuery, CockroachDB, DuckDB, H2, HSQLDB, Postgres, Trino, YugabyteDB
(ARRAY[1, 2] || ARRAY[3, 4])
ClickHouse
arrayConcat( ARRAY(1, 2), ARRAY(3, 4) )
ASE, Access, Aurora MySQL, DB2, Derby, Exasol, Firebird, Hana, Informix, MariaDB, MemSQL, MySQL, Oracle, Redshift, SQLDataWarehouse, SQLServer, SQLite, Snowflake, Sybase, Teradata, Vertica
/* UNSUPPORTED */
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