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Editorial Team
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Asked: 2026-06-10T20:03:42+00:00

I retrieved a Float value from my database and tried to add it to

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I retrieved a Float value from my database and tried to add it to a Float type value and I get an error: in '+': Array cant be coerced into Float (TypeError)

total = 0.0
db = SQLite3::Database.open "Checkout.sqlite"

for i in 0..@items.length
    tempPrice = db.execute "SELECT price FROM Products WHERE product_code = ?", @items[i]
    total = total + tempPrice
end
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1 Answer

  1. Editorial Team
    total = 0.0
db = SQLite3::Database.open "Checkout.sqlite"

for i in 0..@items.length
    db.execute("SELECT price FROM Products WHERE product_code = ?", @items[i]) do |row|
        total = total + row[0]
    end
end
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