Available in versions: Dev (3.20) | Latest (3.19) | 3.18

JSON array element access with -> or ->>

Applies to ✅ Open Source Edition   ✅ Express Edition   ✅ Professional Edition   ✅ Enterprise Edition

JSON array elements can be accessed by (zero based) index as follows:

SELECT
  '[1,2,3]'::json->1
create.select(jsonGetElement(json("[1,2,3]"), 1))
      .fetch();

The result would look like this:

+------------------+
| json_get_element |
+------------------+
| 2                |
+------------------+

The API is PostgreSQL inspired, and as such, there are two ways of accessing elements:

Dialect support

This example using jOOQ:

jsonGetElement(json("[1,2,3]"), 1)

Translates to the following dialect specific expressions:

Aurora Postgres, CockroachDB, Postgres, YugabyteDB

(CAST('[1,2,3]' AS json)->1)

DB2

json_query(
  '[1,2,3]',
  ('$.' || CAST(1 AS varchar(3998)))
)

MariaDB, MySQL

json_extract(
  '[1,2,3]',
  concat(
    concat(
      '$[',
      CAST(1 AS char)
    ),
    ']'
  )
)

Oracle

json_query('[1,2,3]', '$[1]')

Snowflake

get(parse_json('[1,2,3]'), 1)

SQLite

('[1,2,3]'->1)

Trino

json_extract(
  json_parse('[1,2,3]'),
  (('$[' || CAST(1 AS varchar)) || ']')
)

ASE, Access, Aurora MySQL, BigQuery, Derby, DuckDB, Exasol, Firebird, H2, HSQLDB, Hana, Informix, MemSQL, Redshift, SQLDataWarehouse, SQLServer, Sybase, Teradata, Vertica

/* UNSUPPORTED */

(These are currently generated with jOOQ 3.20, see #10141), or translate your own on our website

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