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:

-- MYSQL
json_valid('{}')

-- ORACLE
'{}' IS JSON

-- SQLSERVER
(isjson('{}') = 1)

-- ACCESS, ASE, AURORA_MYSQL, AURORA_POSTGRES, BIGQUERY, COCKROACHDB, DB2, DERBY, EXASOL, FIREBIRD, H2, HANA, HSQLDB, 
-- INFORMIX, MARIADB, MEMSQL, POSTGRES, REDSHIFT, SNOWFLAKE, SQLDATAWAREHOUSE, SQLITE, SYBASE, TERADATA, VERTICA, YUGABYTEDB
/* UNSUPPORTED */

(These are currently generated with jOOQ 3.17, see #10141), or translate your own on our website

The jOOQ User Manual : SQL building : Conditional expressions : JSON predicate

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