Author Topic: Need a query  (Read 5394 times)


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Need a query
« on: April 20, 2009, 12:52:41 AM »

  I have a table contains 100 columns i need to write a query using group by and order by clauses.can you please help me in this.


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Re: Need a query
« Reply #1 on: April 20, 2009, 07:22:29 AM »
This is an example of syntax for the GROUP BY clause:

    SELECT column1, column2, ... column_n, aggregate_function (expression)
    FROM tables
    WHERE predicates
    GROUP BY column1, column2, ... column_n;

aggregate_function can be a function such as SUM, COUNT, MIN, or MAX.

Here's an example that uses the COUNT function:

SELECT department, COUNT(*) as "Number of employees"
FROM employees
WHERE salary > 25000
GROUP BY department;

Here's an example that uses the MIN function:

SELECT department, MIN(salary) as "Lowest salary"
FROM employees
GROUP BY department;