uqa-engine 0.2.3

Engine: schema-aware table store, catalog restore, transactions
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

//
// Unified Query Algebra
//
// Copyright (c) 2023-2026 Cognica, Inc.
//

use super::*;
use crate::Engine;

fn relation_schema(
    engine: &Engine,
    name: &str,
) -> Result<Option<Vec<(String, ColumnType)>>, uqa_sql::SQLError> {
    let catalog = engine.catalog_read_view();
    let resolution = engine.session_execution_view().relation_name_resolution();
    virtual_relation_schema(&catalog, &resolution, name)
}

#[test]
fn pg18_catalog_shapes_include_empty_relations_and_removed_columns() {
    let engine = Engine::new();
    let description = relation_schema(&engine, "pg_catalog.pg_description")
        .unwrap()
        .unwrap();
    assert_eq!(description.len(), 4);
    assert_eq!(description[0], ("objoid".into(), ColumnType::Oid));

    let attrdef = relation_schema(&engine, "pg_attrdef").unwrap().unwrap();
    assert_eq!(
        attrdef
            .iter()
            .map(|(name, _)| name.as_str())
            .collect::<Vec<_>>(),
        vec!["oid", "adrelid", "adnum", "adbin"]
    );
}

#[test]
fn pg18_information_schema_domains_retain_their_oid_identity() {
    let engine = Engine::new();
    let routines = relation_schema(&engine, "information_schema.routines")
        .unwrap()
        .unwrap();
    assert_eq!(routines.len(), 82);
    assert!(matches!(
        routines[0].1,
        ColumnType::Domain { oid: 13_312, .. }
    ));
    assert!(matches!(
        routines[54].1,
        ColumnType::Domain { oid: 13_318, .. }
    ));
}

#[test]
fn ag_catalog_relations_resolve_qualified_or_through_the_search_path() {
    let engine = Engine::new();
    let resolution = engine.session_execution_view().relation_name_resolution();
    assert_eq!(
        resolve_virtual_relation(&resolution, "ag_catalog.ag_graph"),
        Some(VirtualRelation::AgGraph)
    );
    assert_eq!(
        resolve_virtual_relation(&resolution, "AG_CATALOG.AG_LABEL"),
        Some(VirtualRelation::AgLabel)
    );
    assert_eq!(resolve_virtual_relation(&resolution, "ag_graph"), None);
    engine
        .set_variable("search_path", "ag_catalog, \"$user\", public")
        .unwrap();
    let resolution = engine.session_execution_view().relation_name_resolution();
    assert_eq!(
        resolve_virtual_relation(&resolution, "ag_graph"),
        Some(VirtualRelation::AgGraph)
    );
    assert_eq!(
        resolve_virtual_relation(&resolution, "ag_label"),
        Some(VirtualRelation::AgLabel)
    );
    assert_eq!(
        resolve_virtual_relation(&resolution, "public.ag_graph"),
        None
    );

    let graph = relation_schema(&engine, "ag_catalog.ag_graph")
        .unwrap()
        .unwrap();
    assert_eq!(
        graph
            .iter()
            .map(|(name, _)| name.as_str())
            .collect::<Vec<_>>(),
        vec!["graphid", "name", "namespace"]
    );
    assert_eq!(graph[2].1, ColumnType::Regnamespace);
    let label = relation_schema(&engine, "ag_catalog.ag_label")
        .unwrap()
        .unwrap();
    assert_eq!(
        label
            .iter()
            .map(|(name, _)| name.as_str())
            .collect::<Vec<_>>(),
        vec!["name", "graph", "id", "kind", "relation", "seq_name"]
    );
    assert!(matches!(&label[2].1, ColumnType::Domain { name, .. } if name == "label_id"));
    assert!(matches!(&label[3].1, ColumnType::Domain { name, .. } if name == "label_kind"));
}