json_object
BigQuery
Db2 (LUW)
MariaDB
MySQL
Oracle DB
PostgreSQL
SQL Server
SQLite
2013
2015
2017
2019
2021
⊘ 3.5.7 - 3.43.0
a
⊘ 2008R2 - 2022
⚠ 16
b
c
⊘ 8.3 - 15
✓ 21c+
c
✓ 12cR2 - 19c
b
c
⊘ 11gR1 - 12cR1
⊘ 5.0 - 8.0.34
⊘ 5.1 - 10.11
⚠ 11.5.8
✓ 11.5.0 - 11.5.7
b
⊘ 10.5 - 11.1
⊘ 2.0
See JSON1 extension
No colon syntax (T814)
No key uniqueness constraint (T830):
[with|without] unique [keys]