What number aggregate functions are accessible there in sql?
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What are subquery and its properties?
How to use union to merge outputs from two queries together in ms sql server?
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What is awe?
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Suppose i have one sql query that contains 2 minute to execute.After one weekly i am executing same query that is taking 5 minute.Why our same query is taking more time.what would be my approach to reduce execution time.Please help.
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