JSON predicate
Applies to ✅ Open Source Edition ✅ Express Edition ✅ Professional Edition ✅ Enterprise Edition
The JSON predicate can be used to check if a given expression is valid JSON
SELECT 1
FROM dual
WHERE '{}' IS JSON
AND '{' IS NOT JSON
create.selectOne()
.where(val("{}").isJson())
.and(val("{").isNotJson())
.fetch();
Dialect support
This example using jOOQ:
val("{}").isJson()
Translates to the following dialect specific expressions:
-- DUCKDB, MARIADB, MYSQL
json_valid('{}')
-- ORACLE
'{}' IS JSON
-- SNOWFLAKE
(check_json('{}') IS NULL)
-- SQLDATAWAREHOUSE, SQLSERVER
(isjson('{}') = 1)
-- ACCESS, ASE, AURORA_MYSQL, AURORA_POSTGRES, BIGQUERY, COCKROACHDB, DB2, DERBY, EXASOL, FIREBIRD, H2, HANA, HSQLDB,
-- INFORMIX, MEMSQL, POSTGRES, REDSHIFT, SQLITE, SYBASE, TERADATA, TRINO, VERTICA, YUGABYTEDB
/* UNSUPPORTED */
(These are currently generated with jOOQ 3.19, see #10141), or translate your own on our website
Feedback
Do you have any feedback about this page? We'd love to hear it!