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
185
186
187
188
189
190
|
# name: test/sql/select/test_multi_column_reference.test
# description: Test multi column reference
# group: [select]
statement ok
PRAGMA enable_verification
# column names can have an arbitrary amount of dots
# here is how the resolution works:
# no dots (i.e. "part1")
# -> part1 refers to a column
# one dot (i.e. "part1.part2")
# EITHER:
# -> part1 is a table, part2 is a column
# -> part1 is a column, part2 is a property of that column (i.e. struct_extract)
# two or more dots (i.e. "part1.part2.part3.part4...")
# -> part1 is a schema, part2 is a table, part3 is a column name, part4 and beyond are struct fields
# -> part1 is a table, part2 is a column name, part3 and beyond are struct fields
# -> part1 is a column, part2 and beyond are struct fields
# we always prefer the most top-level view
# i.e. in case of multiple resolution options, we resolve in order:
# -> 1. resolve "part1" as a schema
# -> 2. resolve "part1" as a table
# -> 3. resolve "part1" as a column
# schema -> table -> column reference
statement ok
CREATE SCHEMA test
statement ok
CREATE TABLE test.tbl(col INTEGER);
statement ok
INSERT INTO test.tbl VALUES (1), (2), (3);
query I
SELECT test.tbl.col FROM test.tbl;
----
1
2
3
# schema name with alias does not work
statement error
SELECT test.t.col FROM test.tbl t;
----
<REGEX>:.*Binder Error.*table.*not found.*
statement error
SELECT test.tbl.col FROM test.tbl t;
----
<REGEX>:.*Binder Error.*table.*not found.*
# check how ties are resolved
# we create a table called "t" in a schema called "t" with a column called "t" that has a field called "t"
statement ok
CREATE SCHEMA t
statement ok
CREATE TABLE t.t(t ROW(t INTEGER));
statement ok
INSERT INTO t.t VALUES ({'t': 42});
# "t" selects the column
query I
SELECT t FROM t.t;
----
{'t': 42}
# "t.t" also selects the column
query I
SELECT t.t FROM t.t;
----
{'t': 42}
# t.t.t also selects the column
query I
SELECT t.t.t FROM t.t;
----
{'t': 42}
# t.t.t.t selects the field
query I
SELECT t.t.t.t FROM t.t;
----
42
statement ok
DROP SCHEMA t CASCADE;
# test long nested struct
statement ok
CREATE SCHEMA t
statement ok
CREATE TABLE t.t AS SELECT {'t': {'t': {'t': {'t': {'t': 42}}}}} t
query I
SELECT t.t.t.t.t.t.t.t FROM t.t;
----
42
query I
SELECT t.t.t.t.t.t.t FROM t.t;
----
{'t': 42}
query I
SELECT t.t.t.t.t.t FROM t.t;
----
{'t': {'t': 42}}
query I
SELECT t.t.t.t.t FROM t.t;
----
{'t': {'t': {'t': 42}}}
query I
SELECT t.t.t.t FROM t.t;
----
{'t': {'t': {'t': {'t': 42}}}}
query I
SELECT t.t.t FROM t.t;
----
{'t': {'t': {'t': {'t': {'t': 42}}}}}
query I
SELECT t.t FROM t.t;
----
{'t': {'t': {'t': {'t': {'t': 42}}}}}
query I
SELECT t FROM t.t;
----
{'t': {'t': {'t': {'t': {'t': 42}}}}}
statement ok
DROP SCHEMA t CASCADE
# test multiple tables with the same name but a different schema
statement ok
CREATE SCHEMA s1
statement ok
CREATE SCHEMA s2
statement ok
CREATE TABLE s1.t1 AS SELECT 42 t
statement ok
CREATE TABLE s2.t1 AS SELECT 84 t
query I
SELECT s1.t1.t FROM s1.t1, s2.t1
----
42
query I
SELECT * EXCLUDE (s1.t1.t) FROM s1.t1, s2.t1
----
84
query I
SELECT * EXCLUDE (S1.T1.T) FROM s1.t1, s2.t1
----
84
query I
SELECT s2.t1.t FROM s1.t1, s2.t1
----
84
# test various failures
statement error
SELECT testX.tbl.col FROM test.tbl;
----
<REGEX>:.*Binder Error.*table.*not found.*
statement error
SELECT test.tblX.col FROM test.tbl;
----
<REGEX>:.*Binder Error.*table.*not found.*
statement error
SELECT test.tbl.colX FROM test.tbl;
----
<REGEX>:.*Binder Error.*does not have a column.*
|
