WITHOUT_ARRAY_WRAPPER directive
Applies to ✅ Open Source Edition ✅ Express Edition ✅ Professional Edition ✅ Enterprise Edition
The WITHOUT_ARRAY_WRAPPER directive allows for avoiding the array wrapper around the resulting JSON document.
Consider the following query
SELECT id, title FROM book ORDER BY id FOR JSON AUTO, WITHOUT_ARRAY_WRAPPER
create.select(BOOK.ID, BOOK.TITLE)
.from(BOOK)
.orderBy(BOOK.ID)
.forJSON().auto().withoutArrayWrapper()
.fetch();
This query produces a document like this:
{"id": 1, "title": "1984"},
{"id": 2, "title": "Animal Farm"},
{"id": 3, "title": "O Alquimista"},
{"id": 4, "title": "Brida"}
Dialect support
This example using jOOQ:
select(BOOK.ID).from(BOOK).orderBy(BOOK.ID).forJSON().auto().withoutArrayWrapper()
Translates to the following dialect specific expressions:
Aurora Postgres, Postgres, YugabyteDB
SELECT regexp_replace(CAST(json_agg(json_strip_nulls(json_build_object('ID', ID))) AS varchar), '^\[(.*)\]$', '\1', 'g')
FROM (
SELECT BOOK.ID
FROM BOOK
ORDER BY BOOK.ID
) t
CockroachDB
SELECT regexp_replace(CAST(json_agg(json_strip_nulls(json_build_object('ID', ID))) AS string), '^\[(.*)\]$', '\1', 'g')
FROM (
SELECT BOOK.ID
FROM BOOK
ORDER BY BOOK.ID
) t
DB2
SELECT listagg(
json_object(
KEY 'ID' VALUE ID
ABSENT ON NULL
),
','
)
FROM (
SELECT BOOK.ID
FROM BOOK
ORDER BY BOOK.ID
) t
H2
SELECT regexp_replace(CAST(json_arrayagg(json_object( KEY 'ID' VALUE ID ABSENT ON NULL )) AS varchar), '^\[(.*)\]$', '$1') FROM ( SELECT BOOK.ID FROM BOOK ORDER BY BOOK.ID ) t
MariaDB, MySQL
SET @t = @@group_concat_max_len;
SET @@group_concat_max_len = 4294967295;
SELECT group_concat(json_object('ID', ID) SEPARATOR ',')
FROM (
SELECT BOOK.ID
FROM BOOK
ORDER BY BOOK.ID
) t;
SET @@group_concat_max_len = @t;
Oracle
SELECT regexp_replace(CAST(json_arrayagg(json_object( KEY 'ID' VALUE ID ABSENT ON NULL RETURNING clob ) FORMAT JSON RETURNING clob) AS varchar2(4000)), '^\[(.*)\]$', '\1') FROM ( SELECT BOOK.ID FROM BOOK ORDER BY BOOK.ID ) t
SQLServer
SELECT ( SELECT BOOK.ID FROM BOOK ORDER BY BOOK.ID FOR JSON AUTO, WITHOUT_ARRAY_WRAPPER )
ASE, Access, Aurora MySQL, BigQuery, ClickHouse, Databricks, Derby, DuckDB, Exasol, Firebird, HSQLDB, Hana, Informix, MemSQL, Redshift, SQLDataWarehouse, SQLite, Snowflake, Sybase, Teradata, Trino, 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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