if we take 2 tables(like emp and dept), we use join stage and
how to improve the performance?
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Answer Posted / ashok
above answer has one mistake
i.e join doesn't has sort operation bydefault we explicitly
specify
| Is This Answer Correct ? | 9 Yes | 3 No |
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what is stage is used for below Input columns: dept|mgr|employee|salary Output columns: mgr|count of employee per mgr|avg salary per dept note: each dept has one mgr and each mgr has many employees
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