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Paste # 52510 | ||
2020-11-14 15:20:41 | ||
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db.rkt> (define row (query-row my-conn "SELECT 0.1::decimal, 0.2::decimal")) db.rkt> (for/sum ([i row]) i) 3/10 db.rkt> (real->decimal-string (for/sum ([i row]) i)) "0.30"