Function plan_as_of_or_up_to

pub fn plan_as_of_or_up_to(
    scx: &StatementContext<'_>,
    expr: Expr<Aug>,
) -> Result<Timestamp, PlanError>

Plans and evaluates a scalar expression in a OneShot context to a non-null MzTimestamp.

Produces PlanError::InvalidAsOfUpTo if the expression is

• not a constant,
• not castable to MzTimestamp,
• is null,
• contains an unmaterializable function,
• some other evaluation error occurs, e.g., a division by 0,
• contains aggregates, subqueries, parameters, or window function calls.