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sanjeebparida
Starting Member

1 Posts

Posted - 10/10/2005 :  07:07:11  Show Profile  Reply with Quote
suppose there are two tables emp and amp1
having fields as
table emp
empname empno dessig
sanjeeb 111 manager
rajeeb 112 engineer
-----------------
table emp1
empname empno
sanjeeb 111
rajeeb 112
rohit 345
-------------------
now my query is how i'll select
q1>get me the rows available in emp and not in emp1
q2>get me the rows available in emp1 and not in emp
q3>get me the columns available in emp but not in emp1
q4>get me the columns available in emp1 but not in emp

madhivanan
Premature Yak Congratulator

India
22864 Posts

Posted - 10/10/2005 :  07:25:30  Show Profile  Send madhivanan a Yahoo! Message  Reply with Quote
1 Select * from emp T where not exists(Select * from emp1 where empname=T.empname)
2 Exchage table names from 1
3 select Column_name from information_schema.columns T where table_name ='emp'
and not exists(select * from information_schema.columns where table_name='emp1' and column_name=T.Column_name)
4 Exchage table names from 3

Refer these for basics of SQL queries
www.sqlcourse2.com
http://www.firstsql.com/tutor.htm

Madhivanan

Failing to plan is Planning to fail
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AndrewMurphy
Flowing Fount of Yak Knowledge

Ireland
2916 Posts

Posted - 10/10/2005 :  08:35:11  Show Profile  Reply with Quote
Hmmm....some marks for persistance!
None....for originality.

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