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
|
from tests.dialects.test_dialect import Validator
class TestOracle(Validator):
dialect = "oracle"
def test_oracle(self):
self.validate_identity("SELECT * FROM V$SESSION")
self.validate_identity(
"SELECT MIN(column_name) KEEP (DENSE_RANK FIRST ORDER BY column_name DESC) FROM table_name"
)
self.validate_all(
"NVL(NULL, 1)",
write={
"oracle": "NVL(NULL, 1)",
"": "IFNULL(NULL, 1)",
},
)
self.validate_all(
"DATE '2022-01-01'",
write={
"": "DATE_STR_TO_DATE('2022-01-01')",
"mysql": "CAST('2022-01-01' AS DATE)",
"oracle": "TO_DATE('2022-01-01', 'YYYY-MM-DD')",
"postgres": "CAST('2022-01-01' AS DATE)",
},
)
def test_join_marker(self):
self.validate_identity("SELECT e1.x, e2.x FROM e e1, e e2 WHERE e1.y (+) = e2.y")
self.validate_identity("SELECT e1.x, e2.x FROM e e1, e e2 WHERE e1.y = e2.y (+)")
self.validate_identity("SELECT e1.x, e2.x FROM e e1, e e2 WHERE e1.y (+) = e2.y (+)")
def test_hints(self):
self.validate_identity("SELECT /*+ USE_NL(A B) */ A.COL_TEST FROM TABLE_A A, TABLE_B B")
self.validate_identity(
"SELECT /*+ INDEX(v.j jhist_employee_ix (employee_id start_date)) */ * FROM v"
)
self.validate_identity(
"SELECT /*+ USE_NL(A B C) */ A.COL_TEST FROM TABLE_A A, TABLE_B B, TABLE_C C"
)
self.validate_identity(
"SELECT /*+ NO_INDEX(employees emp_empid) */ employee_id FROM employees WHERE employee_id > 200"
)
self.validate_identity(
"SELECT /*+ NO_INDEX_FFS(items item_order_ix) */ order_id FROM order_items items"
)
self.validate_identity(
"SELECT /*+ LEADING(e j) */ * FROM employees e, departments d, job_history j WHERE e.department_id = d.department_id AND e.hire_date = j.start_date"
)
def test_xml_table(self):
self.validate_identity("XMLTABLE('x')")
self.validate_identity("XMLTABLE('x' RETURNING SEQUENCE BY REF)")
self.validate_identity("XMLTABLE('x' PASSING y)")
self.validate_identity("XMLTABLE('x' PASSING y RETURNING SEQUENCE BY REF)")
self.validate_identity(
"XMLTABLE('x' RETURNING SEQUENCE BY REF COLUMNS a VARCHAR2, b FLOAT)"
)
self.validate_all(
"""SELECT warehouse_name warehouse,
warehouse2."Water", warehouse2."Rail"
FROM warehouses,
XMLTABLE('/Warehouse'
PASSING warehouses.warehouse_spec
COLUMNS
"Water" varchar2(6) PATH 'WaterAccess',
"Rail" varchar2(6) PATH 'RailAccess')
warehouse2""",
write={
"oracle": """SELECT
warehouse_name AS warehouse,
warehouse2."Water",
warehouse2."Rail"
FROM warehouses, XMLTABLE(
'/Warehouse'
PASSING
warehouses.warehouse_spec
COLUMNS
"Water" VARCHAR2(6) PATH 'WaterAccess',
"Rail" VARCHAR2(6) PATH 'RailAccess'
) warehouse2""",
},
pretty=True,
)
self.validate_all(
"""SELECT table_name, column_name, data_default FROM xmltable('ROWSET/ROW'
passing dbms_xmlgen.getxmltype('SELECT table_name, column_name, data_default FROM user_tab_columns')
columns table_name VARCHAR2(128) PATH '*[1]'
, column_name VARCHAR2(128) PATH '*[2]'
, data_default VARCHAR2(2000) PATH '*[3]'
);""",
write={
"oracle": """SELECT
table_name,
column_name,
data_default
FROM XMLTABLE(
'ROWSET/ROW'
PASSING
dbms_xmlgen.GETXMLTYPE('SELECT table_name, column_name, data_default FROM user_tab_columns')
COLUMNS
table_name VARCHAR2(128) PATH '*[1]',
column_name VARCHAR2(128) PATH '*[2]',
data_default VARCHAR2(2000) PATH '*[3]'
)""",
},
pretty=True,
)
def test_match_recognize(self):
self.validate_identity(
"""SELECT
*
FROM sales_history
MATCH_RECOGNIZE (
PARTITION BY product
ORDER BY
tstamp
MEASURES
STRT.tstamp AS start_tstamp,
LAST(UP.tstamp) AS peak_tstamp,
LAST(DOWN.tstamp) AS end_tstamp,
MATCH_NUMBER() AS mno
ONE ROW PER MATCH
AFTER MATCH SKIP TO LAST DOWN
PATTERN (STRT UP+ FLAT* DOWN+)
DEFINE
UP AS UP.units_sold > PREV(UP.units_sold),
FLAT AS FLAT.units_sold = PREV(FLAT.units_sold),
DOWN AS DOWN.units_sold < PREV(DOWN.units_sold)
) MR""",
pretty=True,
)
|
