fnck_sql/planner/operator/
limit.rs

1use super::Operator;
2use crate::planner::{Childrens, LogicalPlan};
3use fnck_sql_serde_macros::ReferenceSerialization;
4use std::fmt;
5use std::fmt::Formatter;
6
7#[derive(Debug, PartialEq, Eq, Clone, Hash, ReferenceSerialization)]
8pub struct LimitOperator {
9    pub offset: Option<usize>,
10    pub limit: Option<usize>,
11}
12
13impl LimitOperator {
14    pub fn build(
15        offset: Option<usize>,
16        limit: Option<usize>,
17        children: LogicalPlan,
18    ) -> LogicalPlan {
19        LogicalPlan::new(
20            Operator::Limit(LimitOperator { offset, limit }),
21            Childrens::Only(children),
22        )
23    }
24}
25
26impl fmt::Display for LimitOperator {
27    fn fmt(&self, f: &mut Formatter) -> fmt::Result {
28        if let Some(limit) = self.limit {
29            write!(f, "Limit {}", limit)?;
30        }
31        if self.limit.is_some() && self.offset.is_some() {
32            write!(f, ", ")?;
33        }
34        if let Some(offset) = self.offset {
35            write!(f, "Offset {}", offset)?;
36        }
37
38        Ok(())
39    }
40}
fnck_sql/planner/operator/limit.rs

fnck_sql/planner/operator/
limit.rs
