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SQL Query

 
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babuprasad_g
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Joined: 26 May 2005
Posts: 45
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PostPosted: Tue Dec 27, 2005 6:42 pm    Post subject: SQL Query
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Hi folks,

There are 5 departments for each department there is few no of employees.
Extract all the employees for each departments Condition is( salary is greater than average salary of each department).

Please give me the query for this question.


Thanks & Regards
Prasad
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priyesh.agrawal

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Joined: 28 Mar 2005
Posts: 1509
Location: Chicago, IL
PostPosted: Tue Dec 27, 2005 7:30 pm    Post subject: Re: SQL Query
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Code:
SELECT EMP, SAL FROM <TABLE> WHERE SAL >
(SELECT AVG(SAL) FROM <TABLE> WHERE DEPT= 'first') AND DEPT= 'first';
UNION         
SELECT EMP, SAL FROM <TABLE> WHERE SAL >
(SELECT AVG(SAL) FROM <TABLE> WHERE DEPT= 'second') AND DEPT= 'second';
UNION
SELECT EMP, SAL FROM <TABLE> WHERE SAL >
(SELECT AVG(SAL) FROM <TABLE> WHERE DEPT= 'third') AND DEPT= 'third';
UNION
SELECT EMP, SAL FROM <TABLE> WHERE SAL >
(SELECT AVG(SAL) FROM <TABLE> WHERE DEPT= 'fourth') AND DEPT= 'fourth';
UNION
SELECT EMP, SAL FROM <TABLE> WHERE SAL >
(SELECT AVG(SAL) FROM <TABLE> WHERE DEPT= 'fifth') AND DEPT= 'fifth';


The query above will extract all the employees having more than AVG salary dept wise....

Regards,

Priyesh.
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khamarutheen

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Joined: 23 Aug 2005
Posts: 678
Location: chennai
PostPosted: Tue Dec 27, 2005 7:40 pm    Post subject: Query
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Hi frnd,

Code:
select ename from employee where sal>=(select avg(sal) a from dept);


Use the above query
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priyesh.agrawal

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Joined: 28 Mar 2005
Posts: 1509
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PostPosted: Tue Dec 27, 2005 7:49 pm    Post subject: Re: SQL Query
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Quote:
_________________
CORRECT ME IF I M WRONG


khamarutheen....Is that your permanent Signature Line.

Not sure, If I misinterpreted the requirements...Well, If I did, your query seems to be very effiecient on TIME as well as CPU utilization.

Regards,

Priyesh.
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khamarutheen

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Joined: 23 Aug 2005
Posts: 678
Location: chennai
PostPosted: Tue Dec 27, 2005 7:57 pm    Post subject: query
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Hi priyesh,

Quote:
Is that your permanent Signature Line.


S. since i wanna to enter each time while solving the problem. i made as permanent... icon_smile.gif
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