Available in versions: Dev (3.21)
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JSON_ARRAY from query
Supported by ✅ Open Source Edition ✅ Express Edition ✅ Professional Edition ✅ Enterprise Edition
The JSON_ARRAY function is used to produce simple JSON arrays from the result of a single column query.
SELECT json_array(SELECT id FROM author)
create.select(jsonArray(select(AUTHOR.ID).from(AUTHOR)))
.fetch();
The result would look like this:
+------------+ | json_array | +------------+ | [1,2,3,4] | +------------+
Dialect support
This example using jOOQ:
jsonArray(select(AUTHOR.ID).from(AUTHOR))
Translates to the following dialect specific expressions:
Aurora Postgres, Postgres
coalesce(
json_array(
SELECT AUTHOR.ID
FROM AUTHOR
RETURNING json
),
CAST('[]' AS json)
)
BigQuery, ClickHouse, DB2, H2, Oracle, Snowflake
json_array( SELECT AUTHOR.ID FROM AUTHOR )
CockroachDB
coalesce(
(
SELECT json_agg(a)
FROM (
SELECT AUTHOR.ID
FROM AUTHOR
) t (a)
),
CAST('[]' AS json)
)
DuckDB
coalesce(
(
SELECT to_json(array_agg(a))
FROM (
SELECT AUTHOR.ID
FROM AUTHOR
) t (a)
),
JSON '[]'
)
MariaDB
ifnull(
(
SELECT json_merge_preserve(
'[]',
concat(
'[',
group_concat(a SEPARATOR ','),
']'
)
)
FROM (
SELECT AUTHOR.ID a
FROM AUTHOR
) t
),
'[]'
)
MySQL
ifnull(
(
SELECT json_merge_preserve(
'[]',
concat(
'[',
group_concat(a SEPARATOR ','),
']'
)
)
FROM (
SELECT AUTHOR.ID
FROM AUTHOR
) t (a)
),
'[]'
)
Spanner
(
SELECT to_json(
coalesce(
array_agg(a), CAST(ARRAY[] AS array<int64>)
)
)
FROM (
SELECT AUTHOR.ID a
FROM AUTHOR
) t
)
SQLite
(
SELECT json_group_array(a)
FROM (
SELECT AUTHOR.ID a
FROM AUTHOR
) t
)
SQLServer
coalesce(
(
SELECT json_query(('[' + string_agg(CAST(a AS varchar(max)), ',') + ']'))
FROM (
SELECT AUTHOR.ID
FROM AUTHOR
) t (a)
),
'[]'
)
Trino
coalesce(
(
SELECT cast(array_agg(a) AS json)
FROM (
SELECT AUTHOR.ID
FROM AUTHOR
) t (a)
),
json_parse('[]')
)
YugabyteDB
(
SELECT json_agg(a)
FROM (
SELECT AUTHOR.ID
FROM AUTHOR
) t (a)
)
ASE, Access, Aurora MySQL, 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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