Function validate_query_block_references 

pub fn validate_query_block_references(
    routines: &dyn RoutineResolution,
    statement: &QueryBlockPlan,
    schema: &RowSchema,
    params: &[SQLParam],
    ctes: &BindingContext<'_>,
) -> Result<(), SQLError>

Validate every query-block reference only after the caller has the authoritative source schema. This preserves registered table-function row shapes and checks recursive argument references before definitive routine namespace lookup.