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/*dialect*/
With Cust AS
( SELECT fnumber,
ROW_NUMBER() OVER (order by id) as RowNumber
from t_bd_currency)
select *
from Cust
Where RowNumber Between 20 and 30
//
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/*dialect*/
With Cust AS
( SELECT fnumber,
ROW_NUMBER() OVER (order by fnumber) as RowNumber  ......