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Questão de Tecnologia da Informação

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A

select x4, sum(x5)

from X, Y

where x1 = y2

and x2 = y3

and y1 between 100 and 500

group by x4;


B

select x4, sum(x5)

from X, Y

where y1 = x1

and y2 = x2

and y1 between 100 and 500


C

select x4, count(x5)

from X, Y

where x1 = y1

and x2 = y2

and y1 >= 100

and y1 <= 500

group by x4;


D

select x4, count(*)

from X, Y

where y2 = x1

and y3 = x2

and y1 between 101 and 501;