In this video we will solve a SQL interview problem asked in PWC. We will solve it using 2 methods. Here is the script :

create table source(id int, name varchar(5))

create table target(id int, name varchar(5))

insert into source values(1,'A'),(2,'B'),(3,'C'),(4,'D')

insert into target values(1,'A'),(2,'B'),(4,'X'),(5,'F');

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