Recently, PostgreSQL introduced JSON data type which is very powerful to manipulate JSON formatted data.

I have published a couple of articles on JSON Data Type.
You can start from here.

PostgreSQL 9.4: The JSON data type is Awesome (Part 1/3)

Recently, I have received a couple of comments on my FB page related use of PostgreSQL JSONB.

A JSONB data type does not preserve any white spaces. Whatever format we have specified, It removes and store without white spaces.

PostgreSQL 9.5 introduced jsonb_pretty() to get JSON formatted data.
When we are troubleshooting JSON related data at that time we require to get JSON in readable format.

Below is a small demonstration of jsonb_pretty():

Create table with sample JSON data:

CREATE TABLE tbl_TestJSON
(
	EmpID INTEGER PRIMARY KEY
	,DepartName VARCHAR(250)
	,EmployeeDetails JSONB
);

INSERT INTO tbl_TestJSON
VALUES 
(
	1
	,'Sales'
	,'
	{"employees":[
	    {"firstName":"Anvesh", "lastName":"Patel"}	  
	]}'
)
,(
	2
	,'Production'
	,'
	{"employees":[	    
	    {"firstName":"Nancy", "lastName":"Shah"}
	]}'
);

Using jsonb_pretty format function:

SELECT jsonb_pretty(EmployeeDetails) AS EmployeeDetails FROM tbl_TestJSON;

Result:

employeedetails
-----------------------------------
 {                                +
     "employees": [               +
         {                        +
             "lastName": "Patel", +
             "firstName": "Anvesh"+
         }                        +
     ]                            +
 }
 {                                +
     "employees": [               +
         {                        +
             "lastName": "Shah",  +
             "firstName": "Nancy" +
         }                        +
     ]                            +
 }
(2 rows)