JSON_ARRAYAGG
Supported by ✅ Open Source Edition ✅ Express Edition ✅ Professional Edition ✅ Enterprise Edition
A data set can be aggregated into a org.jooq.JSON or org.jooq.JSONB array using JSON_ARRAYAGG
SELECT json_arrayagg(author.id) FROM author
create.select(jsonArrayAgg(AUTHOR.ID))
.from(AUTHOR)
.fetch();
The result would look like this:
+---------------+ | json_arrayagg | +---------------+ | [1,2] | +---------------+
Ordering aggregation contents
When aggregating data into an array or JSON array, ordering may be relevant. For this, use the ORDER BY clause in JSON_ARRAYAGG
SELECT json_arrayagg(author.id ORDER BY author.id DESC) FROM author
create.select(jsonArrayAgg(AUTHOR.ID).orderBy(AUTHOR.ID.desc())
.from(AUTHOR)
.fetch();
The result would look like this:
+---------------+ | json_arrayagg | +---------------+ | [2,1] | +---------------+
Dialect support
This example using jOOQ:
jsonArrayAgg(AUTHOR.ID)
Translates to the following dialect specific expressions:
Aurora MySQL, H2, Oracle
json_arrayagg(AUTHOR.ID)
Aurora Postgres, CockroachDB, Postgres, YugabyteDB
json_agg(AUTHOR.ID)
BigQuery, Spanner
to_json(
coalesce(
array_agg(AUTHOR.ID), cast(ARRAY[] AS array<int64>)
)
)
ClickHouse
toJSONString(groupArray(AUTHOR.ID))
DB2
cast(
('[' || listagg(
AUTHOR.ID,
','
) || ']')
AS varchar(32672)
)
DuckDB
to_json(array_agg(AUTHOR.ID))
MariaDB, MySQL
json_merge_preserve(
'[]',
concat(
'[',
group_concat(AUTHOR.ID SEPARATOR ','),
']'
)
)
Snowflake
array_agg(coalesce(
to_variant(AUTHOR.ID),
parse_json('null')
))
SQLite
json_group_array(AUTHOR.ID)
SQLServer
json_query(('[' + string_agg(cast(AUTHOR.ID AS varchar(max)), ',') + ']'))
Trino
cast(array_agg(AUTHOR.ID) AS json)
ASE, Access, Databricks, Exasol, Firebird, HSQLDB, Hana, Informix, MemSQL, Redshift, SQLDataWarehouse, Sybase, Teradata, Vertica
/* UNSUPPORTED */
Generated with jOOQ 3.21. Support in older jOOQ versions may differ. Translate your own SQL on our website
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