spg-engine 7.37.5

Execution engine for SPG: glues spg-sql parsing to spg-storage. Foreign keys, joins, vectors, cold tier.
Documentation 
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130

//! v7.37.5 β-P4 — `INTERVAL[]` as a stored column type.
//!
//! Mirrors `e2e_interval_column_storage` for the array form. Pins:
//!   * `CREATE TABLE … (col INTERVAL[])` accepted at parser + DDL
//!   * INSERT with `ARRAY[INTERVAL '...', ...]` literal round-trips
//!   * NULL element preserved
//!   * PG byte-equal `'1 day'` ≠ `'24 hours'` survives the array
//!     codec round-trip
//!   * empty array `'{}'` round-trips
//!   * mixed positive / negative / zero spans
//!
//! Wire OID 1187 (`_interval`), catalog tag 35, FILE_VERSION 48+.

use spg_engine::{Engine, QueryResult};
use spg_storage::{DataType, IntervalSpan, Value};

fn rows(r: QueryResult) -> Vec<Vec<Value<'static>>> {
    match r {
        QueryResult::Rows { rows, .. } => rows.into_iter().map(|r| r.values).collect(),
        _ => panic!("expected Rows"),
    }
}

fn span(months: i32, days: i32, micros: i64) -> IntervalSpan {
    IntervalSpan {
        months,
        days,
        micros,
    }
}

#[test]
fn create_table_interval_array_column_is_accepted() {
    let mut e = Engine::new();
    e.execute("CREATE TABLE t (id INT NOT NULL, spans INTERVAL[] NOT NULL)")
        .unwrap();
    let r = e.execute("SELECT spans FROM t").unwrap();
    let QueryResult::Rows { columns, .. } = r else {
        panic!()
    };
    assert_eq!(columns[0].ty, DataType::IntervalArray);
}

#[test]
fn insert_select_round_trip_interval_array_array_literal() {
    let mut e = Engine::new();
    e.execute("CREATE TABLE t (id INT NOT NULL, spans INTERVAL[] NOT NULL)")
        .unwrap();
    e.execute(
        "INSERT INTO t VALUES \
            (1, ARRAY[INTERVAL '1 day', INTERVAL '24 hours', INTERVAL '2 months'])",
    )
    .unwrap();
    let r = rows(e.execute("SELECT spans FROM t").unwrap());
    assert_eq!(
        r[0][0],
        Value::IntervalArray(vec![
            Some(span(0, 1, 0)),
            // β-P1 made `'24 hours'` distinct from `'1 day'`; β-P4
            // preserves that through the array codec.
            Some(span(0, 0, 86_400_000_000)),
            Some(span(2, 0, 0)),
        ])
    );
}

#[test]
fn nullable_element_round_trips() {
    let mut e = Engine::new();
    e.execute("CREATE TABLE t (id INT NOT NULL, spans INTERVAL[] NOT NULL)")
        .unwrap();
    e.execute("INSERT INTO t VALUES (1, ARRAY[INTERVAL '1 day', NULL, INTERVAL '5 minutes'])")
        .unwrap();
    let r = rows(e.execute("SELECT spans FROM t").unwrap());
    assert_eq!(
        r[0][0],
        Value::IntervalArray(vec![
            Some(span(0, 1, 0)),
            None,
            Some(span(0, 0, 5 * 60 * 1_000_000)),
        ])
    );
}

#[test]
fn empty_array_round_trips() {
    let mut e = Engine::new();
    e.execute("CREATE TABLE t (id INT NOT NULL, spans INTERVAL[] NOT NULL)")
        .unwrap();
    e.execute("INSERT INTO t VALUES (1, ARRAY[]::INTERVAL[])")
        .unwrap();
    let r = rows(e.execute("SELECT spans FROM t").unwrap());
    assert_eq!(r[0][0], Value::IntervalArray(vec![]));
}

#[test]
fn negative_and_compound_round_trip() {
    let mut e = Engine::new();
    e.execute("CREATE TABLE t (id INT NOT NULL, spans INTERVAL[] NOT NULL)")
        .unwrap();
    e.execute(
        "INSERT INTO t VALUES (1, ARRAY[\
            INTERVAL '-1 day', \
            INTERVAL '1 year 6 months', \
            INTERVAL '3 days 12 hours'\
        ])",
    )
    .unwrap();
    let r = rows(e.execute("SELECT spans FROM t").unwrap());
    assert_eq!(
        r[0][0],
        Value::IntervalArray(vec![
            Some(span(0, -1, 0)),
            Some(span(18, 0, 0)),
            Some(span(0, 3, 12 * 3600 * 1_000_000)),
        ])
    );
}

#[test]
fn nullable_column_accepts_null() {
    let mut e = Engine::new();
    e.execute("CREATE TABLE t (id INT NOT NULL, spans INTERVAL[])")
        .unwrap();
    e.execute("INSERT INTO t VALUES (1, NULL), (2, ARRAY[INTERVAL '1 day'])")
        .unwrap();
    let r = rows(e.execute("SELECT spans FROM t ORDER BY id").unwrap());
    assert_eq!(r[0][0], Value::Null);
    assert_eq!(r[1][0], Value::IntervalArray(vec![Some(span(0, 1, 0))]));
}