With the release of Oracle Database 12c, Oracle SQL entered the Age of JSON. You can use SQL to join JSON data with relational data. You can extract content from within the JSON document and make it available for relational processes and tools. You can even query, right from within the database, JSON data that is stored outside Oracle Database in an external table. Check out my post on JSON resources for more guidance on all of the above.
And that was all possible in 12.1. In Oracle Database 12c Release 2, we added several pre-defined PL/SQL object types to perform fine-grained programmatic construction and manipulation of in-memory JSON data. I'll publish occasional posts on what you can do with these types. Here's the first one, showing you how to get the value for a specific key in a JSON document.
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