Database Management Question: Download Database Management PDF
Do you know how to join two table?
Answer:
There are two types of join inner join and outer join.
(1)Inner join will return all the common records in both the
table
Ex: Select e.ename from Employee e,Dept d where e.did=d.did;
(2)Outer join is of 3 types Left Outer,Right Outer and full
outer.
Left outer retrieves common records from both the table and
all the record from the left table.
Similarly Right Outer all the records from right table and
Full outer from both the tables
(1)Inner join will return all the common records in both the
table
Ex: Select e.ename from Employee e,Dept d where e.did=d.did;
(2)Outer join is of 3 types Left Outer,Right Outer and full
outer.
Left outer retrieves common records from both the table and
all the record from the left table.
Similarly Right Outer all the records from right table and
Full outer from both the tables
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