SQL Interview Question - Solution (Part - XXVII) |

Описание к видео SQL Interview Question - Solution (Part - XXVII) |

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Medium:   / mahendraee204  
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Table Create and insert statements:
----------------------------------------------------------
create table route_distance (
source varchar(20),
destination varchar(20),
distance int
);

insert into route_distance values ('a', 'b', 30),('b', 'd', 70),('b', 'a', 30),('d', 'b', 60),
('c', 'a', 50),('a', 'c', 50),('c', 'd', 60),('d', 'c', 60)

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