Searching JSON Values
Explore various MySQL methods for querying JSON data effectively. Learn to extract JSON values using operators like -> and ->>, utilize functions like JSON_EXTRACT, JSON_VALUE, MEMBER OF, and JSON_SEARCH to locate and manipulate JSON documents within MySQL tables.
As a relational database management system, MySQL provides easy access to large amounts of data. Using SQL, data can be queried efficiently, enabling successful data analysis. For tables with columns of primitive data types, the SQL syntax we have learned about so far is sufficient. However, with the introduction of the JSON data type, the existing syntax does not allow us to search through JSON documents. Therefore, JSON documents are currently inaccessible to our knowledge. Let’s explore the operators and functions that MySQL introduces to make JSON documents searchable with our existing query workflow.
Retrieval
Retrieval of JSON values in MySQL involves using the -> and ->> operators to extract values from a JSON object at a specific JSON path. The -> operator returns the extracted value as data type JSON, while the ->> operator returns an unquoted version of the extracted value (i.e., a string that contains no double quotes or escapable characters). The closely related JSON_EXTRACT() function is an alternative to ...