forex(origin: text, destination: text) 🡒 date, pure function
Returns the date of the latest exchange rate found for a pair of currencies. The currencies should be encoded with their canonical three-letter codes. Not all exchange rates are uploaded daily to the European Central Bank.
table T = with [| as Code |] [| "JPY" |] [| "USD" |] [| "EUR" |] show table "to CHF" a1b3 with T.Code lastforex(T.Code, "CHF")
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