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Tuesday, September 12, 2017

data insering from staging table to final table how to avoid duplicates? please

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data insering from staging table to final table how to avoid duplicates? please
I have two tables Table1(has 10 columns), Table2(has 22 columns).

every time I insert data from table1(fresh load everyday kidn of staging data) to table2.(appends data to exist data).

So here I would like to check before insert dat

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