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
pub mod check_constraints;
pub mod key_column_usage;
pub mod referential_constraints;
pub mod table_constraints;
pub use check_constraints::*;
pub use key_column_usage::*;
pub use referential_constraints::*;
pub use table_constraints::*;
use super::{InformationSchema, SchemaQueryBuilder};
use crate::{
postgres::def::Constraint,
sqlx_types::{postgres::PgRow, Row},
};
use sea_query::{Alias, Expr, Iden, JoinType, Order, Query, SeaRc, SelectStatement};
#[derive(Debug, Default)]
pub struct TableConstraintsQueryResult {
pub constraint_schema: String,
pub constraint_name: String,
pub table_schema: String,
pub table_name: String,
pub constraint_type: String,
pub is_deferrable: String,
pub initially_deferred: String,
pub check_clause: Option<String>,
pub column_name: Option<String>,
pub ordinal_position: Option<i32>,
pub position_in_unique_constraint: Option<i32>,
pub unique_constraint_schema: Option<String>,
pub unique_constraint_name: Option<String>,
pub match_option: Option<String>,
pub update_rule: Option<String>,
pub delete_rule: Option<String>,
pub referential_key_table_name: Option<String>,
pub referential_key_column_name: Option<String>,
}
impl SchemaQueryBuilder {
pub fn query_table_constriants(
&self,
schema: SeaRc<dyn Iden>,
table: SeaRc<dyn Iden>,
) -> SelectStatement {
type Schema = InformationSchema;
type Tcf = TableConstraintsField;
type Cf = CheckConstraintsFields;
type Kcuf = KeyColumnUsageFields;
type RefC = ReferentialConstraintsFields;
let rcsq = Alias::new("referential_constraints_subquery");
Query::select()
.columns(vec![
(Schema::TableConstraints, Tcf::ConstraintSchema),
(Schema::TableConstraints, Tcf::ConstraintName),
(Schema::TableConstraints, Tcf::TableSchema),
(Schema::TableConstraints, Tcf::TableName),
(Schema::TableConstraints, Tcf::ConstraintType),
(Schema::TableConstraints, Tcf::IsDeferrable),
(Schema::TableConstraints, Tcf::InitiallyDeferred),
])
.column((Schema::CheckConstraints, Cf::CheckClause))
.columns(vec![
(Schema::KeyColumnUsage, Kcuf::ColumnName),
(Schema::KeyColumnUsage, Kcuf::OrdinalPosition),
(Schema::KeyColumnUsage, Kcuf::PositionInUniqueConstraint),
])
.columns(vec![
(rcsq.clone(), RefC::UniqueConstraintSchema),
(rcsq.clone(), RefC::UniqueConstraintName),
(rcsq.clone(), RefC::MatchOption),
(rcsq.clone(), RefC::UpdateRule),
(rcsq.clone(), RefC::DeleteRule),
])
.columns(vec![
(rcsq.clone(), Kcuf::TableName),
(rcsq.clone(), Kcuf::ColumnName),
])
.from((Schema::Schema, InformationSchema::TableConstraints))
.join(
JoinType::LeftJoin,
(Schema::Schema, Schema::CheckConstraints),
Expr::tbl(Schema::TableConstraints, Tcf::ConstraintName)
.equals(Schema::CheckConstraints, Cf::ConstraintName),
)
.join(
JoinType::LeftJoin,
(Schema::Schema, Schema::KeyColumnUsage),
Expr::tbl(Schema::TableConstraints, Tcf::ConstraintName)
.equals(Schema::KeyColumnUsage, Kcuf::ConstraintName),
)
.join_subquery(
JoinType::LeftJoin,
Query::select()
.columns(vec![
(Schema::ReferentialConstraints, RefC::ConstraintName),
(Schema::ReferentialConstraints, RefC::UniqueConstraintSchema),
(Schema::ReferentialConstraints, RefC::UniqueConstraintName),
(Schema::ReferentialConstraints, RefC::MatchOption),
(Schema::ReferentialConstraints, RefC::UpdateRule),
(Schema::ReferentialConstraints, RefC::DeleteRule),
])
.columns(vec![
(Schema::KeyColumnUsage, Kcuf::TableName),
(Schema::KeyColumnUsage, Kcuf::ColumnName),
])
.from((Schema::Schema, Schema::ReferentialConstraints))
.left_join(
(Schema::Schema, Schema::KeyColumnUsage),
Expr::tbl(Schema::ReferentialConstraints, RefC::UniqueConstraintName)
.equals(Schema::KeyColumnUsage, Kcuf::ConstraintName),
)
.take(),
rcsq.clone(),
Expr::tbl(Schema::TableConstraints, Tcf::ConstraintName)
.equals(rcsq.clone(), RefC::ConstraintName),
)
.and_where(
Expr::col((Schema::TableConstraints, Tcf::TableSchema)).eq(schema.to_string()),
)
.and_where(Expr::col((Schema::TableConstraints, Tcf::TableName)).eq(table.to_string()))
.order_by((Schema::TableConstraints, Tcf::ConstraintName), Order::Asc)
.order_by((Schema::KeyColumnUsage, Kcuf::OrdinalPosition), Order::Asc)
.order_by((rcsq.clone(), RefC::UniqueConstraintName), Order::Asc)
.order_by((rcsq.clone(), Tcf::ConstraintName), Order::Asc)
.take()
}
}
#[cfg(feature = "sqlx-postgres")]
impl From<&PgRow> for TableConstraintsQueryResult {
fn from(row: &PgRow) -> Self {
Self {
constraint_schema: row.get(0),
constraint_name: row.get(1),
table_schema: row.get(2),
table_name: row.get(3),
constraint_type: row.get(4),
is_deferrable: row.get(5),
initially_deferred: row.get(6),
check_clause: row.get(7),
column_name: row.get(8),
ordinal_position: row.get(9),
position_in_unique_constraint: row.get(10),
unique_constraint_schema: row.get(11),
unique_constraint_name: row.get(12),
match_option: row.get(13),
update_rule: row.get(14),
delete_rule: row.get(15),
referential_key_table_name: row.get(16),
referential_key_column_name: row.get(17),
}
}
}
#[cfg(not(feature = "sqlx-postgres"))]
impl From<&PgRow> for TableConstraintsQueryResult {
fn from(_row: &PgRow) -> Self {
Self::default()
}
}