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Querying on JSONB objects is almost as simple as classic SQL queries. There are parallel variants of these operators for both the json and jsonb types. The field/element/path/path…www.postgresql.org.org is not possible for the. JSON types to be used in Postgresql 9.5+ database. The most common use of the operators is to select items by the value of a first level attribute in an array or by the number of possible values in an object.