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
|
import unittest
from sqlglot import exp, to_table
from sqlglot.errors import SchemaError
from sqlglot.schema import MappingSchema, ensure_schema
class TestSchema(unittest.TestCase):
def assert_column_names(self, schema, *table_results):
for table, result in table_results:
with self.subTest(f"{table} -> {result}"):
self.assertEqual(schema.column_names(to_table(table)), result)
def assert_column_names_raises(self, schema, *tables):
for table in tables:
with self.subTest(table):
with self.assertRaises(SchemaError):
schema.column_names(to_table(table))
def test_schema(self):
schema = ensure_schema(
{
"x": {
"a": "uint64",
},
"y": {
"b": "uint64",
"c": "uint64",
},
},
)
self.assert_column_names(
schema,
("x", ["a"]),
("y", ["b", "c"]),
("z.x", ["a"]),
("z.x.y", ["b", "c"]),
)
self.assert_column_names_raises(
schema,
"z",
"z.z",
"z.z.z",
)
def test_schema_db(self):
schema = ensure_schema(
{
"d1": {
"x": {
"a": "uint64",
},
"y": {
"b": "uint64",
},
},
"d2": {
"x": {
"c": "uint64",
},
},
},
)
self.assert_column_names(
schema,
("d1.x", ["a"]),
("d2.x", ["c"]),
("y", ["b"]),
("d1.y", ["b"]),
("z.d1.y", ["b"]),
)
self.assert_column_names_raises(
schema,
"x",
"z.x",
"z.y",
)
def test_schema_catalog(self):
schema = ensure_schema(
{
"c1": {
"d1": {
"x": {
"a": "uint64",
},
"y": {
"b": "uint64",
},
"z": {
"c": "uint64",
},
},
},
"c2": {
"d1": {
"y": {
"d": "uint64",
},
"z": {
"e": "uint64",
},
},
"d2": {
"z": {
"f": "uint64",
},
},
},
}
)
self.assert_column_names(
schema,
("x", ["a"]),
("d1.x", ["a"]),
("c1.d1.x", ["a"]),
("c1.d1.y", ["b"]),
("c1.d1.z", ["c"]),
("c2.d1.y", ["d"]),
("c2.d1.z", ["e"]),
("d2.z", ["f"]),
("c2.d2.z", ["f"]),
)
self.assert_column_names_raises(
schema,
"q",
"d2.x",
"y",
"z",
"d1.y",
"d1.z",
"a.b.c",
)
def test_schema_add_table_with_and_without_mapping(self):
schema = MappingSchema()
schema.add_table("test")
self.assertEqual(schema.column_names("test"), [])
schema.add_table("test", {"x": "string"})
self.assertEqual(schema.column_names("test"), ["x"])
schema.add_table("test", {"x": "string", "y": "int"})
self.assertEqual(schema.column_names("test"), ["x", "y"])
schema.add_table("test")
self.assertEqual(schema.column_names("test"), ["x", "y"])
def test_schema_get_column_type(self):
schema = MappingSchema({"a": {"b": "varchar"}})
self.assertEqual(schema.get_column_type("a", "b"), exp.DataType.Type.VARCHAR)
self.assertEqual(
schema.get_column_type(exp.Table(this="a"), exp.Column(this="b")),
exp.DataType.Type.VARCHAR,
)
self.assertEqual(
schema.get_column_type("a", exp.Column(this="b")), exp.DataType.Type.VARCHAR
)
self.assertEqual(
schema.get_column_type(exp.Table(this="a"), "b"), exp.DataType.Type.VARCHAR
)
schema = MappingSchema({"a": {"b": {"c": "varchar"}}})
self.assertEqual(
schema.get_column_type(exp.Table(this="b", db="a"), exp.Column(this="c")),
exp.DataType.Type.VARCHAR,
)
self.assertEqual(
schema.get_column_type(exp.Table(this="b", db="a"), "c"), exp.DataType.Type.VARCHAR
)
schema = MappingSchema({"a": {"b": {"c": {"d": "varchar"}}}})
self.assertEqual(
schema.get_column_type(exp.Table(this="c", db="b", catalog="a"), exp.Column(this="d")),
exp.DataType.Type.VARCHAR,
)
self.assertEqual(
schema.get_column_type(exp.Table(this="c", db="b", catalog="a"), "d"),
exp.DataType.Type.VARCHAR,
)
|
