summaryrefslogtreecommitdiffstats
path: root/tests/dialects/test_redshift.py
blob: e5bd0e5974394afc1d40a5d9b531021e44f4d5cd (plain)
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
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
from tests.dialects.test_dialect import Validator


class TestRedshift(Validator):
    dialect = "redshift"

    def test_redshift(self):
        self.validate_identity("SELECT * FROM #x")
        self.validate_identity("SELECT INTERVAL '5 day'")
        self.validate_identity("foo$")
        self.validate_identity("$foo")

        self.validate_all(
            "SELECT SNAPSHOT",
            write={
                "": "SELECT SNAPSHOT",
                "redshift": 'SELECT "SNAPSHOT"',
            },
        )

        self.validate_all(
            "SELECT SYSDATE",
            write={
                "": "SELECT CURRENT_TIMESTAMP()",
                "postgres": "SELECT CURRENT_TIMESTAMP",
                "redshift": "SELECT SYSDATE",
            },
        )
        self.validate_all(
            "SELECT DATE_PART(minute, timestamp '2023-01-04 04:05:06.789')",
            write={
                "postgres": "SELECT EXTRACT(minute FROM CAST('2023-01-04 04:05:06.789' AS TIMESTAMP))",
                "redshift": "SELECT EXTRACT(minute FROM CAST('2023-01-04 04:05:06.789' AS TIMESTAMP))",
                "snowflake": "SELECT EXTRACT(minute FROM CAST('2023-01-04 04:05:06.789' AS TIMESTAMPNTZ))",
            },
        )
        self.validate_all(
            "SELECT DATE_PART(month, date '20220502')",
            write={
                "postgres": "SELECT EXTRACT(month FROM CAST('20220502' AS DATE))",
                "redshift": "SELECT EXTRACT(month FROM CAST('20220502' AS DATE))",
                "snowflake": "SELECT EXTRACT(month FROM CAST('20220502' AS DATE))",
            },
        )
        self.validate_all("SELECT INTERVAL '5 day'", read={"": "SELECT INTERVAL '5' days"})
        self.validate_all("CONVERT(INTEGER, x)", write={"redshift": "CAST(x AS INTEGER)"})
        self.validate_all(
            "DATEADD('day', ndays, caldate)", write={"redshift": "DATEADD(day, ndays, caldate)"}
        )
        self.validate_all(
            'create table "group" ("col" char(10))',
            write={
                "redshift": 'CREATE TABLE "group" ("col" CHAR(10))',
                "mysql": "CREATE TABLE `group` (`col` CHAR(10))",
            },
        )
        self.validate_all(
            'create table if not exists city_slash_id("city/id" integer not null, state char(2) not null)',
            write={
                "redshift": 'CREATE TABLE IF NOT EXISTS city_slash_id ("city/id" INTEGER NOT NULL, state CHAR(2) NOT NULL)',
                "presto": 'CREATE TABLE IF NOT EXISTS city_slash_id ("city/id" INTEGER NOT NULL, state CHAR(2) NOT NULL)',
            },
        )
        self.validate_all(
            "SELECT ST_AsEWKT(ST_GeomFromEWKT('SRID=4326;POINT(10 20)')::geography)",
            write={
                "redshift": "SELECT ST_ASEWKT(CAST(ST_GEOMFROMEWKT('SRID=4326;POINT(10 20)') AS GEOGRAPHY))",
                "bigquery": "SELECT ST_ASEWKT(TRY_CAST(ST_GEOMFROMEWKT('SRID=4326;POINT(10 20)') AS GEOGRAPHY))",
            },
        )
        self.validate_all(
            "SELECT ST_AsEWKT(ST_GeogFromText('LINESTRING(110 40, 2 3, -10 80, -7 9)')::geometry)",
            write={
                "redshift": "SELECT ST_ASEWKT(CAST(ST_GEOGFROMTEXT('LINESTRING(110 40, 2 3, -10 80, -7 9)') AS GEOMETRY))",
            },
        )
        self.validate_all(
            "SELECT 'abc'::BINARY",
            write={
                "redshift": "SELECT CAST('abc' AS VARBYTE)",
            },
        )
        self.validate_all(
            "SELECT 'abc'::CHARACTER",
            write={
                "redshift": "SELECT CAST('abc' AS CHAR)",
            },
        )
        self.validate_all(
            "SELECT * FROM venue WHERE (venuecity, venuestate) IN (('Miami', 'FL'), ('Tampa', 'FL')) ORDER BY venueid",
            write={
                "redshift": "SELECT * FROM venue WHERE (venuecity, venuestate) IN (('Miami', 'FL'), ('Tampa', 'FL')) ORDER BY venueid",
            },
        )
        self.validate_all(
            'SELECT tablename, "column" FROM pg_table_def WHERE "column" LIKE \'%start\\_%\' LIMIT 5',
            write={
                "redshift": 'SELECT tablename, "column" FROM pg_table_def WHERE "column" LIKE \'%start\\_%\' LIMIT 5'
            },
        )
        self.validate_all(
            "SELECT DISTINCT ON (a) a, b FROM x ORDER BY c DESC",
            write={
                "redshift": 'SELECT a, b FROM (SELECT a, b, ROW_NUMBER() OVER (PARTITION BY a ORDER BY c DESC) AS _row_number FROM x) WHERE "_row_number" = 1',
            },
        )
        self.validate_all(
            "DECODE(x, a, b, c, d)",
            write={
                "": "CASE WHEN x = a OR (x IS NULL AND a IS NULL) THEN b WHEN x = c OR (x IS NULL AND c IS NULL) THEN d END",
                "oracle": "CASE WHEN x = a OR (x IS NULL AND a IS NULL) THEN b WHEN x = c OR (x IS NULL AND c IS NULL) THEN d END",
                "redshift": "CASE WHEN x = a OR (x IS NULL AND a IS NULL) THEN b WHEN x = c OR (x IS NULL AND c IS NULL) THEN d END",
                "snowflake": "CASE WHEN x = a OR (x IS NULL AND a IS NULL) THEN b WHEN x = c OR (x IS NULL AND c IS NULL) THEN d END",
                "spark": "CASE WHEN x = a OR (x IS NULL AND a IS NULL) THEN b WHEN x = c OR (x IS NULL AND c IS NULL) THEN d END",
            },
        )
        self.validate_all(
            "NVL(a, b, c, d)",
            write={
                "redshift": "COALESCE(a, b, c, d)",
                "mysql": "COALESCE(a, b, c, d)",
                "postgres": "COALESCE(a, b, c, d)",
            },
        )
        self.validate_all(
            "DATEDIFF('day', a, b)",
            write={
                "redshift": "DATEDIFF(day, a, b)",
                "presto": "DATE_DIFF('day', a, b)",
            },
        )
        self.validate_all(
            "SELECT TOP 1 x FROM y",
            write={
                "redshift": "SELECT x FROM y LIMIT 1",
            },
        )

    def test_identity(self):
        self.validate_identity("CAST('bla' AS SUPER)")
        self.validate_identity("CREATE TABLE real1 (realcol REAL)")
        self.validate_identity("CAST('foo' AS HLLSKETCH)")
        self.validate_identity("SELECT DATEADD(day, 1, 'today')")
        self.validate_identity("'abc' SIMILAR TO '(b|c)%'")
        self.validate_identity(
            "SELECT caldate + INTERVAL '1 second' AS dateplus FROM date WHERE caldate = '12-31-2008'"
        )
        self.validate_identity("CREATE TABLE datetable (start_date DATE, end_date DATE)")
        self.validate_identity(
            "SELECT COUNT(*) FROM event WHERE eventname LIKE '%Ring%' OR eventname LIKE '%Die%'"
        )
        self.validate_identity(
            "CREATE TABLE SOUP (LIKE other_table) DISTKEY(soup1) SORTKEY(soup2) DISTSTYLE ALL"
        )
        self.validate_identity(
            "CREATE TABLE sales (salesid INTEGER NOT NULL) DISTKEY(listid) COMPOUND SORTKEY(listid, sellerid) DISTSTYLE AUTO"
        )
        self.validate_identity(
            "COPY customer FROM 's3://mybucket/customer' IAM_ROLE 'arn:aws:iam::0123456789012:role/MyRedshiftRole'"
        )
        self.validate_identity(
            "UNLOAD ('select * from venue') TO 's3://mybucket/unload/' IAM_ROLE 'arn:aws:iam::0123456789012:role/MyRedshiftRole'"
        )
        self.validate_identity(
            "CREATE TABLE SOUP (SOUP1 VARCHAR(50) NOT NULL ENCODE ZSTD, SOUP2 VARCHAR(70) NULL ENCODE DELTA)"
        )

    def test_values(self):
        self.validate_all(
            "SELECT a, b FROM (VALUES (1, 2)) AS t (a, b)",
            write={
                "redshift": "SELECT a, b FROM (SELECT 1 AS a, 2 AS b) AS t",
            },
        )
        self.validate_all(
            "SELECT a, b FROM (VALUES (1, 2), (3, 4)) AS t (a, b)",
            write={
                "redshift": "SELECT a, b FROM (SELECT 1 AS a, 2 AS b UNION ALL SELECT 3, 4) AS t",
            },
        )
        self.validate_all(
            "SELECT a, b FROM (VALUES (1, 2), (3, 4), (5, 6), (7, 8)) AS t (a, b)",
            write={
                "redshift": "SELECT a, b FROM (SELECT 1 AS a, 2 AS b UNION ALL SELECT 3, 4 UNION ALL SELECT 5, 6 UNION ALL SELECT 7, 8) AS t",
            },
        )
        self.validate_all(
            "INSERT INTO t(a) VALUES (1), (2), (3)",
            write={
                "redshift": "INSERT INTO t (a) VALUES (1), (2), (3)",
            },
        )
        self.validate_all(
            "INSERT INTO t(a, b) SELECT a, b FROM (VALUES (1, 2), (3, 4)) AS t (a, b)",
            write={
                "redshift": "INSERT INTO t (a, b) SELECT a, b FROM (SELECT 1 AS a, 2 AS b UNION ALL SELECT 3, 4) AS t",
            },
        )
        self.validate_all(
            "INSERT INTO t(a, b) VALUES (1, 2), (3, 4)",
            write={
                "redshift": "INSERT INTO t (a, b) VALUES (1, 2), (3, 4)",
            },
        )

    def test_create_table_like(self):
        self.validate_all(
            "CREATE TABLE t1 LIKE t2",
            write={
                "redshift": "CREATE TABLE t1 (LIKE t2)",
            },
        )
        self.validate_all(
            "CREATE TABLE SOUP (LIKE other_table) DISTKEY(soup1) SORTKEY(soup2) DISTSTYLE ALL",
            write={
                "redshift": "CREATE TABLE SOUP (LIKE other_table) DISTKEY(soup1) SORTKEY(soup2) DISTSTYLE ALL",
            },
        )

    def test_rename_table(self):
        self.validate_all(
            "ALTER TABLE db.t1 RENAME TO db.t2",
            write={
                "spark": "ALTER TABLE db.t1 RENAME TO db.t2",
                "redshift": "ALTER TABLE db.t1 RENAME TO t2",
            },
        )

    def test_varchar_max(self):
        self.validate_all(
            "CREATE TABLE TEST (cola VARCHAR(MAX))",
            write={
                "redshift": 'CREATE TABLE "TEST" ("cola" VARCHAR(MAX))',
            },
            identify=True,
        )

    def test_no_schema_binding(self):
        self.validate_all(
            "CREATE OR REPLACE VIEW v1 AS SELECT cola, colb FROM t1 WITH NO SCHEMA BINDING",
            write={
                "redshift": "CREATE OR REPLACE VIEW v1 AS SELECT cola, colb FROM t1 WITH NO SCHEMA BINDING",
            },
        )