pub trait SingleColumn { }Expand description
What a single un-tupled selection decodes to: a bare native value, or
its Option. Sealed by construction, since the impls come from the same
sql_leaf_type! that declares the types. It is what gives a one-column
set operation an ORDER BY with no position to state.
Dyn Compatibility§
This trait is dyn compatible.
In older versions of Rust, dyn compatibility was called "object safety".