Function offset_into_value

src/sql/src/plan/query.rs:1631–1639

Converts an OFFSET expression into a value.

(offset: HirScalarExpr)

/// Converts an OFFSET expression into a value.
pub(crate) fn offset_into_value(offset: HirScalarExpr) -> Result<i64, PlanError> {
    let offset = offset
        .try_into_literal_int64()
        .map_err(|err| PlanError::InvalidOffset(err.to_string_with_causes()))?;
    if offset < 0 {
        return Err(negative_offset_error(offset));
    }
    Ok(offset)
}

pub(crate) fn negative_offset_error(offset: i64) -> PlanError {
    PlanError::InvalidOffset(format!("must not be negative, got {}", offset))