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ARRAY_PREPEND (|| operator)
Applies to ✅ Open Source Edition ✅ Express Edition ✅ Professional Edition ✅ Enterprise Edition
The ARRAY_PREPEND function allows for concatenating an element to the beginning of an array (see also ARRAY_APPEND and ARRAY_CONCAT):
SELECT 1 || ARRAY[2, 3]
create.select(arrayPrepend(1, array(2, 3))).fetch();
The result would look like this:
+--------------.+ | array_prepend | +---------------+ | [1, 2, 3] | +---------------+
Dialect support
This example using jOOQ:
arrayPrepend(1, array(2, 3))
Translates to the following dialect specific expressions:
Aurora Postgres, CockroachDB, DuckDB, Postgres, YugabyteDB
array_prepend( 1, ARRAY[2, 3] )
BigQuery, H2, HSQLDB, Trino
(ARRAY[1] || ARRAY[2, 3])
ClickHouse
arrayPushFront( ARRAY(2, 3), 1 )
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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