rqb 0.1.5

sqlx-first typed Postgres query builder.
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
151
152
153
154
155
156
157
158
159

use crate::{BoolExpr, ValueExpr};

use super::{function, literal};

/// Stable date/time part names accepted by helpers such as `date_trunc`.
#[derive(Clone, Copy, Debug, PartialEq, Eq)]
#[non_exhaustive]
pub enum DatePart {
    /// `microseconds`.
    Microseconds,
    /// `milliseconds`.
    Milliseconds,
    /// `second`.
    Second,
    /// `minute`.
    Minute,
    /// `hour`.
    Hour,
    /// `day`.
    Day,
    /// `week`.
    Week,
    /// `month`.
    Month,
    /// `quarter`.
    Quarter,
    /// `year`.
    Year,
    /// `decade`.
    Decade,
    /// `century`.
    Century,
    /// `millennium`.
    Millennium,
}

impl DatePart {
    /// Returns the PostgreSQL date/time field token.
    #[inline]
    pub const fn as_sql(self) -> &'static str {
        match self {
            Self::Microseconds => "microseconds",
            Self::Milliseconds => "milliseconds",
            Self::Second => "second",
            Self::Minute => "minute",
            Self::Hour => "hour",
            Self::Day => "day",
            Self::Week => "week",
            Self::Month => "month",
            Self::Quarter => "quarter",
            Self::Year => "year",
            Self::Decade => "decade",
            Self::Century => "century",
            Self::Millennium => "millennium",
        }
    }
}

/// Builds `now()`.
pub fn now() -> ValueExpr {
    function("now", Vec::<ValueExpr>::new())
}

/// Builds the `CURRENT_TIMESTAMP` SQL keyword.
pub fn current_timestamp() -> ValueExpr {
    ValueExpr::Keyword("CURRENT_TIMESTAMP")
}

/// Builds the `CURRENT_DATE` SQL keyword.
pub fn current_date() -> ValueExpr {
    ValueExpr::Keyword("CURRENT_DATE")
}

/// Builds `date_trunc(part, expr)`.
pub fn date_trunc(part: impl Into<ValueExpr>, expr: impl Into<ValueExpr>) -> ValueExpr {
    function("date_trunc", [part.into(), expr.into()])
}

/// Builds `date_trunc('part', expr)` with a typed static date part.
pub fn date_trunc_part(part: DatePart, expr: impl Into<ValueExpr>) -> ValueExpr {
    date_trunc(literal(part.as_sql()), expr)
}

/// Builds `date_bin(stride, source, origin)`.
pub fn date_bin(
    stride: impl Into<ValueExpr>,
    source: impl Into<ValueExpr>,
    origin: impl Into<ValueExpr>,
) -> ValueExpr {
    function("date_bin", [stride.into(), source.into(), origin.into()])
}

/// Builds `to_char(value, format)`.
pub fn to_char(value: impl Into<ValueExpr>, format: impl Into<ValueExpr>) -> ValueExpr {
    function("to_char", [value.into(), format.into()])
}

/// Builds `to_date(text, format)`.
pub fn to_date(text: impl Into<ValueExpr>, format: impl Into<ValueExpr>) -> ValueExpr {
    function("to_date", [text.into(), format.into()])
}

/// Builds `to_timestamp(text, format)`.
pub fn to_timestamp(text: impl Into<ValueExpr>, format: impl Into<ValueExpr>) -> ValueExpr {
    function("to_timestamp", [text.into(), format.into()])
}

/// Builds `to_number(text, format)`.
pub fn to_number(text: impl Into<ValueExpr>, format: impl Into<ValueExpr>) -> ValueExpr {
    function("to_number", [text.into(), format.into()])
}

/// Builds `isfinite(value)`.
pub fn isfinite(value: impl Into<ValueExpr>) -> BoolExpr {
    function("isfinite", [value]).is_true()
}

/// Builds `EXTRACT(field FROM expr)`.
pub fn extract(field: &'static str, expr: impl Into<ValueExpr>) -> ValueExpr {
    ValueExpr::extract(field, expr.into())
}

/// Builds `age(...)` with one or two arguments.
pub fn age(args: impl IntoIterator<Item = impl Into<ValueExpr>>) -> ValueExpr {
    function("age", args)
}

/// Builds `make_date(year, month, day)`.
pub fn make_date(
    year: impl Into<ValueExpr>,
    month: impl Into<ValueExpr>,
    day: impl Into<ValueExpr>,
) -> ValueExpr {
    function("make_date", [year.into(), month.into(), day.into()])
}

/// Builds `make_time(hour, min, sec)`.
pub fn make_time(
    hour: impl Into<ValueExpr>,
    min: impl Into<ValueExpr>,
    sec: impl Into<ValueExpr>,
) -> ValueExpr {
    function("make_time", [hour.into(), min.into(), sec.into()])
}

/// Builds `make_timestamp(...)`.
pub fn make_timestamp(args: impl IntoIterator<Item = impl Into<ValueExpr>>) -> ValueExpr {
    function("make_timestamp", args)
}

/// Builds `make_timestamptz(...)`.
pub fn make_timestamptz(args: impl IntoIterator<Item = impl Into<ValueExpr>>) -> ValueExpr {
    function("make_timestamptz", args)
}

/// Builds `timezone(zone, expr)`.
pub fn timezone(zone: impl Into<ValueExpr>, expr: impl Into<ValueExpr>) -> ValueExpr {
    function("timezone", [zone.into(), expr.into()])
}