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WHY ALWAYS HAVING CLAUSE SHOULD BE USED AFTER GROUPBY
May 04, 2010
WHY ALWAYS HAVING CLAUSE SHOULD BE USED AFTER GROUPBY,
inner join why its not good practise to give condition in ON
ex. select fname from tbl1 inner join tbl2
above code is not good one...
give some link where i get tips to write optimised SQL code
Posted Date: May 05, 2010 Points: 5
having clause is used to give condition for the groups selected based on a GROUP BY clause
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