chain-builder 2.1.2

A typed, dialect-aware SQL query builder for Rust (PostgreSQL/MySQL/SQLite).
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
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150

use chain_builder::{MySql, Postgres, QueryBuilder, Sqlite, Value};

#[test]
fn pg_insert_many_basic() {
    let (sql, binds) = QueryBuilder::<Postgres>::table("u")
        .insert_many([[("a", 1i64), ("b", 2i64)], [("a", 3i64), ("b", 4i64)]])
        .to_sql();
    assert_eq!(
        sql,
        r#"INSERT INTO "u" ("a", "b") VALUES ($1, $2), ($3, $4)"#
    );
    assert_eq!(
        binds,
        vec![Value::I64(1), Value::I64(2), Value::I64(3), Value::I64(4)]
    );
}

#[test]
fn pg_insert_many_ragged_binds_null() {
    // Second row missing "b" → that slot binds Null.
    let (sql, binds) = QueryBuilder::<Postgres>::table("u")
        .insert_many([vec![("a", 1i64), ("b", 2i64)], vec![("a", 3i64)]])
        .to_sql();
    assert_eq!(
        sql,
        r#"INSERT INTO "u" ("a", "b") VALUES ($1, $2), ($3, $4)"#
    );
    assert_eq!(
        binds,
        vec![Value::I64(1), Value::I64(2), Value::I64(3), Value::Null]
    );
}

#[test]
fn mysql_insert_many() {
    let (sql, binds) = QueryBuilder::<MySql>::table("u")
        .insert_many([[("a", 1i64), ("b", 2i64)], [("a", 3i64), ("b", 4i64)]])
        .to_sql();
    assert_eq!(sql, "INSERT INTO `u` (`a`, `b`) VALUES (?, ?), (?, ?)");
    assert_eq!(
        binds,
        vec![Value::I64(1), Value::I64(2), Value::I64(3), Value::I64(4)]
    );
}

#[test]
fn sqlite_insert_many() {
    let (sql, binds) = QueryBuilder::<Sqlite>::table("u")
        .insert_many([[("a", 1i64), ("b", 2i64)], [("a", 3i64), ("b", 4i64)]])
        .to_sql();
    assert_eq!(sql, r#"INSERT INTO "u" ("a", "b") VALUES (?, ?), (?, ?)"#);
    assert_eq!(
        binds,
        vec![Value::I64(1), Value::I64(2), Value::I64(3), Value::I64(4)]
    );
}

#[test]
fn pg_insert_many_with_on_conflict_and_returning() {
    let (sql, binds) = QueryBuilder::<Postgres>::table("u")
        .insert_many([[("a", 1i64), ("b", 2i64)], [("a", 3i64), ("b", 4i64)]])
        .on_conflict_do_nothing(["a"])
        .returning(["a"])
        .to_sql();
    assert_eq!(
        sql,
        r#"INSERT INTO "u" ("a", "b") VALUES ($1, $2), ($3, $4) ON CONFLICT ("a") DO NOTHING RETURNING "a""#
    );
    assert_eq!(
        binds,
        vec![Value::I64(1), Value::I64(2), Value::I64(3), Value::I64(4)]
    );
}

#[test]
fn pg_group_by_raw_verbatim() {
    let (sql, binds) = QueryBuilder::<Postgres>::table("t")
        .select(["a"])
        .group_by_raw("date_trunc('day', created_at)", vec![])
        .to_sql();
    assert_eq!(
        sql,
        r#"SELECT "a" FROM "t" GROUP BY date_trunc('day', created_at)"#
    );
    assert!(binds.is_empty());
}

#[test]
fn pg_order_by_raw_verbatim_with_bind() {
    let (sql, binds) = QueryBuilder::<Postgres>::table("t")
        .select(["a"])
        .order_by_raw("CASE WHEN a = $1 THEN 0 ELSE 1 END", vec![Value::I64(5)])
        .to_sql();
    assert_eq!(
        sql,
        r#"SELECT "a" FROM "t" ORDER BY CASE WHEN a = $1 THEN 0 ELSE 1 END"#
    );
    assert_eq!(binds, vec![Value::I64(5)]);
}

#[test]
fn sqlite_group_order_by_raw() {
    let (sql, binds) = QueryBuilder::<Sqlite>::table("t")
        .select(["a"])
        .group_by_raw("a, b", vec![])
        .order_by_raw("a DESC", vec![])
        .to_sql();
    assert_eq!(sql, r#"SELECT "a" FROM "t" GROUP BY a, b ORDER BY a DESC"#);
    assert!(binds.is_empty());
}

#[test]
fn pg_group_order_by_raw_appends_to_structured() {
    let (sql, _) = QueryBuilder::<Postgres>::table("t")
        .select(["a"])
        .group_by(["a"])
        .group_by_raw("LOWER(b)", vec![])
        .order_by_asc("a")
        .order_by_raw("LOWER(b)", vec![])
        .to_sql();
    assert_eq!(
        sql,
        r#"SELECT "a" FROM "t" GROUP BY "a", LOWER(b) ORDER BY "a" ASC, LOWER(b)"#
    );
}

// --- Regression: single-row insert and structured group/order unchanged ---

#[test]
fn pg_single_row_insert_unchanged() {
    let (sql, binds) = QueryBuilder::<Postgres>::table("u")
        .insert([("a", 1i64), ("b", 2i64)])
        .to_sql();
    assert_eq!(sql, r#"INSERT INTO "u" ("a", "b") VALUES ($1, $2)"#);
    assert_eq!(binds, vec![Value::I64(1), Value::I64(2)]);
}

#[test]
fn pg_structured_group_order_unchanged() {
    let (sql, _) = QueryBuilder::<Postgres>::table("t")
        .select(["a"])
        .group_by(["a", "b"])
        .order_by_asc("a")
        .order_by_desc("b")
        .to_sql();
    assert_eq!(
        sql,
        r#"SELECT "a" FROM "t" GROUP BY "a", "b" ORDER BY "a" ASC, "b" DESC"#
    );
}