Struct ScalarBindInfo 

pub struct ScalarBindInfo { /* private fields */ }

The bind-time handle passed to super::VScalar::bind: reads the call’s argument expressions and stores per-query bind data.

Implementations

impl ScalarBindInfo

pub fn argument_count(&self) -> u64

The number of argument expressions passed to this call.

pub fn argument(&self, index: u64) -> Option<Expression>

The argument Expression at index, or None if out of range.

pub unsafe fn extra_info<T>(&self) -> &T

The registration-time state stored via set_extra_info, readable at bind time (the same value ScalarFunctionInfo::state exposes during execution).

Safety

T must match the type stored at registration time (the function’s VScalar::State).

pub fn client_context(&self) -> Option<ClientContext<'_>>

The client context of the connection binding this call, for folding constant argument expressions (Expression::fold). None if unavailable.