Safe Haskell | None |
---|---|
Language | Haskell2010 |
The standard library of functions that operate on data columns.
Arithmetic operations
(.+) :: (Num out, HomoBinaryOp2 a1 a2 out) => a1 -> a2 -> out Source #
Overloaded operator for operationts that are guaranteed to succeed.
Reductions
sumCol :: forall ref a. (Num a, SQLTypeable a, ToSQL a) => Column ref a -> LocalData a Source #
The sum of all the elements in a column.
If the data type is too small to represent the sum, the value being returned is undefined.
sumCol' :: DynColumn -> LocalFrame Source #