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Answer Posted / ramesh
the fan trap is let we take 3 tables the 1 table is joined to
2 table with 1 : N Cordinality and 2 table is joined to 3 table with 1 : N cordinality
I.e 1.....(1:N)......2....(1:N).....3
then it it forming a fan trap.
it does through any errors but the the required data will not get corectly
so by using alias we can resolve this traps
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