CASE WHEN END STATEMENTS IN JOINS 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 CASE WHEN END STATEMENTS concepts in sql
👉Query -
1)
drop table if exists table2;
create table table2(
id varchar(133),
name varchar(133));
insert into table2 (id,name)
values ('1','n1'),
('2','n2'),
('3','n3'),
('4','n4'),
('5','n5');
2)
drop table if exists table1a;
CREATE TABLE table1a(name varchar(200),amount integer);
INSERT INTO table1a(name,amount)
VALUES
('n1','5713'),
('n2','8275'),
('n1-online','3316'),
('n2-online','3622');
drop table if exists table1b;
CREATE TABLE table1b(name varchar(200),state varchar(200));
INSERT INTO table1b(name,state)
VALUES
('n1','s1'),
('n2','s2');
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[@AshutoshKumaryt]

More such concepts - ua-cam.com/play/PLbTF1OfX62c3RQ_ZFfyNBWVPdz_OWTMLG.html

[@RahulGupta-bn4rj]

hi , your efforts to spread knowledge of sql is appreciated, i would request , please add some more zoom in your's videos as values are not visible in sql studio even in full screen mode
thank you so much..

[@user-lm5wb8vi1x]

Finished watching

[@king-hc6vi]

What if we join the tables with a condition as
a1. Seatid < a2.Seatid ?

[@arupchandra8602]

Hi, I'm solved it in little bit different approach
select
case when id=(select COUNT(1) from seats_tbl) then id
when id%2=0 then id-1
else id+1 end id, name
from table
order by id;

[@Manjunath_07]

for first_problem
with cte as(
select *,row_number() over(partition by pairs order by id desc) from(
select * ,ntile(3) over(order by id asc) as pairs from table2) as a
)
select row_number() over() as id,name from cte;
2nd
select name,amount,case when name='n1-online' then 's1' else case when name='n2-online' then 's2' else state end end as state from(
select a.*,coalesce(b.state,0)as state from table1a as a left join table1b as b on a.name=b.name) as a;

[@-LAzaruddin]

when will you do videos on portfolio

[@AshutoshKumaryt]

In process