| http://www.w3.org/ns/prov#value | - If the expression is an aggregate is of the form AVG(C0) OVER(PARTITION BY C1, C2, . . . , Ck), replace it with an expression of the form SUM(SUM(C0) OVER(PARTITION BY C1, C2, . . . , Ck)) OVER( )/SUM(COUNT(C0) OVER(PARTITION BY C1, C2, . . . , Ck)) OVER( ) and move the standard (nested) aggregates into the inner select list. 5.
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