working of join command.

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if we having two tables empolyee and department with one common column deptid.
we retrieve data by

1 select * from employee, department where employee.deptid=department.id;

2 select * from employee join department where employee.deptid=department.id;

so which option is better and what is the difference

Posted 27-Jul-15 19:48pm

manish-gusain8909

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_Asif_ · Accepted Answer · 2015-07-28T02:06:00

Solution 3

A very good commentory over which style to suite can be found here![^]

Posted 28-Jul-15 2:06am

_Asif_

Wendelius · Accepted Answer · 2015-07-27T19:53:00

Solution 1

I would prefer the second one because of following reasons
- more standard way
- more portable between databases
- can be easily modified to different join types such as outer, full and cross

Posted 27-Jul-15 19:53pm

Wendelius