Does Redshift support JSON fields, like Postgresql's json data type? If so what do I do to use it?
Amazon Redshift supports the parsing of JSON data into SUPER and up to 5x faster insertion of JSON/SUPER data in comparison to inserting similar data into classic scalar columns.
You can store JSON documents in SQL Server or SQL Database and query JSON data as in a NoSQL database.
JSON is perfect for storing temporary data. For example, temporary data can be user-generated data, such as a submitted form on a website. JSON can also be used as a data format for any programming language to provide a high level of interoperability.
Unstructured data – Data in Amazon Redshift must be structured by a defined schema, rather than supporting arbitrary schema structure for each row. If your data is unstructured, you can perform extract, transform, and load (ETL) on Amazon EMR to get the data ready for loading into Amazon Redshift.
You can store JSON in Amazon Redshift, within a normal text field.
There are functions available to extract data from JSON fields, but it is not an effective way to store data since it doesn't leverage the full capabilities of Redshift's column-based architecture.
See: Amazon Redshift documentation - JSON Functions
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