STRING AGG IN SQL | Advanced SQL | Ashutosh Kumar

Sql one of the most important language asked in most of the analytics interviews,in this series i have discussed some advanced level sql concepts that are frequently asked in data analyst,business analyst interviews. In this video i have covered non equi joins concepts in sql

👉Query -

drop table if exists details;
-- create a table
CREATE TABLE details (
custid varchar(200),
orderid integer,
item varchar(200),
quantity integer
);
-- insert some values
INSERT INTO details(custid,orderid,item,quantity)
values ('c1',1, 'mouse', 2),
('c1',1, 'keyboard', 3),
('c1',1, 'headphone', 5),
('c1',1, 'laptop',1 ),
('c1',1, 'pendrive', 3),
('c2',1, 'tv', 2),
('c2',1, 'washing machine', 2),
('c2',1, 'mobile', 1),
('c2',1, 'earphones',3 );

👉 Complete playlist on Sql Interview questions and answers
   • HackerRank SQL problems and solution  

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   • INNER JOIN IN SQL  

👉 Introduction to tables and databases in sql -
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   • STRING FUNCTIONS IN SQL  

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👉 Autoincrement in sql
   • Auto Increment in SQL - SQL  

👉 Primary Key in sql-
   • PRIMARY KEYS IN SQL - SQL  

👉 Null and Default values in sql-
   • NULL AND DEFAULT VALUES IN SQL - SQL  

👉 Data types in sql-
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#sql #interviews #questions #solutions