Converting JSON data into Oracle tables relies primarily on the powerful built-in JSON_TABLE function. This function maps hierarchical JSON text into a virtual relational view (rows and columns) that can be queried or inserted directly into standard Oracle database tables. Here is a step-by-step guide to achieving this conversion. 📋 Prerequisites
Ensure your Oracle Database version is 12c or higher, as native SQL/JSON functionalities were introduced in 12c and enhanced across subsequent releases like 19c and 23ai. 🛠️ Step-by-Step Conversion Guide Step 1: Prepare Your JSON Source
Your source JSON can reside inside an existing table column (configured as a JSON, VARCHAR2, CLOB, or BLOB data type), or you can load it on-the-fly.
For this example, let’s look at a typical hierarchical JSON payload containing an array of employee data:
{ “department”: “Engineering”, “employees”: [ { “emp_id”: 101, “name”: “Alice”, “role”: “Developer” }, { “emp_id”: 102, “name”: “Bob”, “role”: “Designer” } ] } Use code with caution. Step 2: Formulate the JSON_TABLE Syntax
The JSON_TABLE function breaks apart the JSON components using path expressions.
Convert JSON SQL queries from an Oracle database to … – AWS
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