Use the JSON operators, such as short arrow and long arrow along with the WHERE clause to filter the result set of a query. This way, you can access a specific node of a JSON object. Now, we will use the “->” operator with the “->” operator to get only the “pro_name” node from the given JSON object: SELECT o_details -> 'pro_description' -> 'pro_name' As product_name For instance, we utilize the “->” operator that will retrieve a JSON object: SELECT o_details -> 'pro_description' As product_info The “->” operator will retrieve a JSON object while the “->” operator will retrieve a specific node from that object. To get a specific node from a JSON object, you must use the “->” and “->” operators together. How to Get a Specific Node From a JSON Object in Postgres? The output snippet shows that the “->” operator retrieves the data in TEXT format. Replacing the “->” operator with the “->” operator will retrieve the data in text format: SELECT o_details -> 'cust_name' As Names The output snippet signifies that the “->” operator retrieves the data in JSON format. In the following code snippet, we utilize the “->” operator to get the product description in the form of JSON: SELECT o_details -> 'cust_name' As Names For instance, the short arrow “->” retrieves the JSON object by “key”, while the “->” operator retrieves the JSON object by “text”. How to Query/Fetch JSON Data Using JSON Operators?Ī couple of native operators are used in PostgreSQL to get a JSON object or a specific node. The output signifies that the SELECT query retrieves the data from the JSON column. To query JSON data from the selected table, use the SELECT query as follows: SELECT o_details FROM order_details Use the below-provided query to fetch the data from the “order_details” table: SELECT * FROM order_details The output snippet verifies that the JSON data has been inserted into the selected Postgres table. However, make sure that the data to be inserted is in a valid JSON format: INSERT INTO order_details(o_details) The “ INSERT INTO” statement is used in Postgres to insert JSON data into a specific table’s column. Postgres: Inserting Data into a JSON Column? The table named “order_details” with a JSON column has been created. The “o_details” column will accept JSON data: In the following example, we create a table named “order_details” with two columns: “o_id” and “o_details”: CREATE TABLE order_details( To create a table’s column with JSON data type, specify the column’s name followed by the “JSON” data type: col_name JSON How to Define a Table’s Column With JSON? How Do Aggregate Functions Work With the JSON Data?.How to Get a Specific Node From a JSON Object in Postgres?.How to Query JSON Data Using JSON Operators?.Postgres: Inserting Data into a JSON Column?.How to Define a Table’s Column With JSON?.In this regard, this blog will discuss the following topics: This post will demonstrate how to work with JSON data in PostgreSQL. Postgres offers various operators and functions to manipulate the JSON data. It is an open standard format for transferring data between a server and web apps. The term “JSON” is the acronym for “JavaScript Object Notation”. Note that all files files uploaded without an account are acessible by a unique URL that is hidden but accesible by anyone, so we recommend you to sign up with an account if you want your files to be private, only your account will be able to access your files.PostgreSQL supports a data type named JSON that stores the data in the form of key-value pairs. We allow time before deleting files just in case you're not done with the data, if you're done with viewing or converting a file and want to delete it right away, you can do it yourself through the API. We enforce a strict access policy and employees or external collaboratorsĪll data is automatically deleted forever HTTPS is enforced for all communications with our server.We follow widely accepted industry standard practices when it comes to security: We understand that some data uploaded might be sensitive, so we ensure that your data is only kept when needed. We pride ourselves in building software that's easy to use, but security is also our top priority.
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