coerced_from

datafusion_expr::type_coercion::functions

Function coerced_from 

Source 
fn coerced_from<'a>(
    type_into: &'a DataType,
    type_from: &'a DataType,
) -> Option<DataType>
Expand description

Find the coerced type for the given type_into and type_from. Returns None if coercion is not possible.

Expect uni-directional coercion, for example, i32 is coerced to i64, but i64 is not coerced to i32.

Unlike crate::binary::comparison_coercion, the coerced type is usually wider for lossless conversion.