SQL

use concat in group_concat

SELECT GROUP_CONCAT(
	CONCAT(
		'{ID:',	ID,
        ',ParentID:', ParentID,
        '}'          
	) SEPARATOR ","
) FROM table

group_concat in mysql

GROUP_CONCAT(eng_category_name SEPARATOR ',') as eng_category_name

use group_concat in concat

SELECT
    CONCAT(`Name`, ':', GROUP_CONCAT(`Value` SEPARATOR ',')) AS `Name`
FROM table
GROUP BY `Name`

group_concat mysql

 //returns the concatenated string from multiple rows into a single string
 SELECT emp_id, emp_fname, emp_lname, dept_id,     
GROUP_CONCAT(designation) as "designation" FROM employee group by emp_id;  

sql group_concat

GROUP_CONCAT() VS STRING_AGG() 

SELECT CustName, Address, GROUP_CONCAT(Address, ' || ') As CustAddress  FROM  Customers Group By CustName
#Group_Concat() may not work 2018 and upgraded version 
#SQL and MySQL same 

SELECT CustName, Address, STRING_AGG(Address, ' || ') As CustAddress  FROM  Customers Group By CustName
#String_Agg() may not work some SQL version 
#SQL and MySQL same 

#KindHeartedRamesh

group_concat sql server

STRING_AGG ( expression, separator ) [ <order_clause> ]

<order_clause> ::=   
    WITHIN GROUP ( ORDER BY <order_by_expression_list> [ ASC | DESC ] )
    SELECT STRING_AGG(Genre, ',') AS Result
FROM Genres;
Result:

Result                                      
--------------------------------------------
Rock,Jazz,Country,Pop,Blues,Hip Hop,Rap,Punk