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
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
use super::*;
pub trait Add {
type Rhs: SqlType;
type Output: SqlType;
}
pub trait Sub {
type Rhs: SqlType;
type Output: SqlType;
}
pub trait Mul {
type Rhs: SqlType;
type Output: SqlType;
}
pub trait Div {
type Rhs: SqlType;
type Output: SqlType;
}
macro_rules! numeric_type {
($($tpe: ident),*) => {
$(
impl Add for $tpe {
type Rhs = $tpe;
type Output = $tpe;
}
impl Sub for $tpe {
type Rhs = $tpe;
type Output = $tpe;
}
impl Mul for $tpe {
type Rhs = $tpe;
type Output = $tpe;
}
impl Div for $tpe {
type Rhs = $tpe;
type Output = $tpe;
}
)*
}
}
numeric_type!(SmallInt, Integer, BigInt, Float, Double, Numeric);
impl Add for Time {
type Rhs = Interval;
type Output = Time;
}
impl Sub for Time {
type Rhs = Interval;
type Output = Time;
}
impl Add for Date {
type Rhs = Interval;
type Output = Timestamp;
}
impl Sub for Date {
type Rhs = Interval;
type Output = Timestamp;
}
impl Add for Timestamp {
type Rhs = Interval;
type Output = Timestamp;
}
impl Sub for Timestamp {
type Rhs = Interval;
type Output = Timestamp;
}
impl Add for Interval {
type Rhs = Interval;
type Output = Interval;
}
impl Sub for Interval {
type Rhs = Interval;
type Output = Interval;
}
impl Mul for Interval {
type Rhs = Integer;
type Output = Interval;
}
impl Div for Interval {
type Rhs = Integer;
type Output = Interval;
}
impl<T> Add for Nullable<T>
where
T: Add + SqlType<IsNull = is_nullable::NotNull>,
T::Rhs: SqlType<IsNull = is_nullable::NotNull>,
T::Output: SqlType<IsNull = is_nullable::NotNull>,
{
type Rhs = Nullable<T::Rhs>;
type Output = Nullable<T::Output>;
}
impl<T> Sub for Nullable<T>
where
T: Sub + SqlType<IsNull = is_nullable::NotNull>,
T::Rhs: SqlType<IsNull = is_nullable::NotNull>,
T::Output: SqlType<IsNull = is_nullable::NotNull>,
{
type Rhs = Nullable<T::Rhs>;
type Output = Nullable<T::Output>;
}
impl<T> Mul for Nullable<T>
where
T: Mul + SqlType<IsNull = is_nullable::NotNull>,
T::Rhs: SqlType<IsNull = is_nullable::NotNull>,
T::Output: SqlType<IsNull = is_nullable::NotNull>,
{
type Rhs = Nullable<T::Rhs>;
type Output = Nullable<T::Output>;
}
impl<T> Div for Nullable<T>
where
T: Div + SqlType<IsNull = is_nullable::NotNull>,
T::Rhs: SqlType<IsNull = is_nullable::NotNull>,
T::Output: SqlType<IsNull = is_nullable::NotNull>,
{
type Rhs = Nullable<T::Rhs>;
type Output = Nullable<T::Output>;
}