mirror of https://github.com/apache/superset.git
fix: extract tables doesn't work with reserved keywords (#17654)
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c4b04952d0
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8c25f2f356
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@ -305,6 +305,11 @@ class ParsedQuery:
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table_name_preceding_token = False
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# If the table name is a reserved word (eg, "table_name") it won't be returned. We
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# fix this by ensuring that at least one identifier is returned after the FROM
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# before stopping on a keyword.
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has_processed_identifier = False
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for item in token.tokens:
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if item.is_group and (
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not self._is_identifier(item) or isinstance(item.tokens[0], Parenthesis)
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@ -318,16 +323,25 @@ class ParsedQuery:
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table_name_preceding_token = True
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continue
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if item.ttype in Keyword:
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# If we haven't processed any identifiers it means the table name is a
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# reserved keyword (eg, "table_name") and we shouldn't skip it.
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if item.ttype in Keyword and has_processed_identifier:
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table_name_preceding_token = False
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continue
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if table_name_preceding_token:
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if isinstance(item, Identifier):
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self._process_tokenlist(item)
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has_processed_identifier = True
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elif isinstance(item, IdentifierList):
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for token2 in item.get_identifiers():
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if isinstance(token2, TokenList):
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self._process_tokenlist(token2)
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has_processed_identifier = True
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elif item.ttype in Keyword:
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# convert into an identifier
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fixed = Identifier([Token(Name, item.value)])
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self._process_tokenlist(fixed)
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has_processed_identifier = True
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elif isinstance(item, IdentifierList):
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if any(not self._is_identifier(token2) for token2 in item.tokens):
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self._extract_from_token(item)
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@ -1,757 +0,0 @@
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# Licensed to the Apache Software Foundation (ASF) under one
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# or more contributor license agreements. See the NOTICE file
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# distributed with this work for additional information
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# regarding copyright ownership. The ASF licenses this file
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# to you under the Apache License, Version 2.0 (the
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# "License"); you may not use this file except in compliance
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# with the License. You may obtain a copy of the License at
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#
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# http://www.apache.org/licenses/LICENSE-2.0
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#
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# Unless required by applicable law or agreed to in writing,
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# software distributed under the License is distributed on an
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# "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
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# KIND, either express or implied. See the License for the
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# specific language governing permissions and limitations
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# under the License.
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import unittest
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import sqlparse
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from superset.sql_parse import ParsedQuery, strip_comments_from_sql, Table
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class TestSupersetSqlParse(unittest.TestCase):
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def extract_tables(self, query):
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return ParsedQuery(query).tables
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def test_table(self):
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self.assertEqual(str(Table("tbname")), "tbname")
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self.assertEqual(str(Table("tbname", "schemaname")), "schemaname.tbname")
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self.assertEqual(
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str(Table("tbname", "schemaname", "catalogname")),
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"catalogname.schemaname.tbname",
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)
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self.assertEqual(
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str(Table("tb.name", "schema/name", "catalog\name")),
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"catalog%0Aame.schema%2Fname.tb%2Ename",
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)
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def test_simple_select(self):
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query = "SELECT * FROM tbname"
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self.assertEqual({Table("tbname")}, self.extract_tables(query))
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query = "SELECT * FROM tbname foo"
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self.assertEqual({Table("tbname")}, self.extract_tables(query))
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query = "SELECT * FROM tbname AS foo"
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self.assertEqual({Table("tbname")}, self.extract_tables(query))
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# underscores
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query = "SELECT * FROM tb_name"
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self.assertEqual({Table("tb_name")}, self.extract_tables(query))
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# quotes
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query = 'SELECT * FROM "tbname"'
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self.assertEqual({Table("tbname")}, self.extract_tables(query))
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# unicode encoding
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query = 'SELECT * FROM "tb_name" WHERE city = "Lübeck"'
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self.assertEqual({Table("tb_name")}, self.extract_tables(query))
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# schema
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self.assertEqual(
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{Table("tbname", "schemaname")},
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self.extract_tables("SELECT * FROM schemaname.tbname"),
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)
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self.assertEqual(
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{Table("tbname", "schemaname")},
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self.extract_tables('SELECT * FROM "schemaname"."tbname"'),
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)
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self.assertEqual(
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{Table("tbname", "schemaname")},
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self.extract_tables("SELECT * FROM schemaname.tbname foo"),
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)
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self.assertEqual(
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{Table("tbname", "schemaname")},
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self.extract_tables("SELECT * FROM schemaname.tbname AS foo"),
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)
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self.assertEqual(
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{Table("tbname", "schemaname", "catalogname")},
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self.extract_tables("SELECT * FROM catalogname.schemaname.tbname"),
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)
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# Ill-defined cluster/schema/table.
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self.assertEqual(set(), self.extract_tables("SELECT * FROM schemaname."))
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self.assertEqual(
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set(), self.extract_tables("SELECT * FROM catalogname.schemaname.")
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)
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self.assertEqual(set(), self.extract_tables("SELECT * FROM catalogname.."))
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self.assertEqual(
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set(), self.extract_tables("SELECT * FROM catalogname..tbname")
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)
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# quotes
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query = "SELECT field1, field2 FROM tb_name"
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self.assertEqual({Table("tb_name")}, self.extract_tables(query))
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query = "SELECT t1.f1, t2.f2 FROM t1, t2"
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self.assertEqual({Table("t1"), Table("t2")}, self.extract_tables(query))
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def test_select_named_table(self):
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query = "SELECT a.date, a.field FROM left_table a LIMIT 10"
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self.assertEqual({Table("left_table")}, self.extract_tables(query))
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def test_reverse_select(self):
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query = "FROM t1 SELECT field"
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self.assertEqual({Table("t1")}, self.extract_tables(query))
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def test_subselect(self):
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query = """
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SELECT sub.*
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FROM (
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SELECT *
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FROM s1.t1
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WHERE day_of_week = 'Friday'
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) sub, s2.t2
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WHERE sub.resolution = 'NONE'
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"""
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self.assertEqual(
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{Table("t1", "s1"), Table("t2", "s2")}, self.extract_tables(query)
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)
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query = """
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SELECT sub.*
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FROM (
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SELECT *
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FROM s1.t1
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WHERE day_of_week = 'Friday'
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) sub
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WHERE sub.resolution = 'NONE'
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"""
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self.assertEqual({Table("t1", "s1")}, self.extract_tables(query))
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query = """
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SELECT * FROM t1
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WHERE s11 > ANY
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(SELECT COUNT(*) /* no hint */ FROM t2
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WHERE NOT EXISTS
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(SELECT * FROM t3
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WHERE ROW(5*t2.s1,77)=
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(SELECT 50,11*s1 FROM t4)));
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"""
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self.assertEqual(
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{Table("t1"), Table("t2"), Table("t3"), Table("t4")},
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self.extract_tables(query),
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)
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def test_select_in_expression(self):
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query = "SELECT f1, (SELECT count(1) FROM t2) FROM t1"
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self.assertEqual({Table("t1"), Table("t2")}, self.extract_tables(query))
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query = "SELECT f1, (SELECT count(1) FROM t2) as f2 FROM t1"
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self.assertEqual({Table("t1"), Table("t2")}, self.extract_tables(query))
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def test_parentheses(self):
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query = "SELECT f1, (x + y) AS f2 FROM t1"
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self.assertEqual({Table("t1")}, self.extract_tables(query))
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def test_union(self):
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query = "SELECT * FROM t1 UNION SELECT * FROM t2"
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self.assertEqual({Table("t1"), Table("t2")}, self.extract_tables(query))
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query = "SELECT * FROM t1 UNION ALL SELECT * FROM t2"
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self.assertEqual({Table("t1"), Table("t2")}, self.extract_tables(query))
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query = "SELECT * FROM t1 INTERSECT ALL SELECT * FROM t2"
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self.assertEqual({Table("t1"), Table("t2")}, self.extract_tables(query))
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def test_select_from_values(self):
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query = "SELECT * FROM VALUES (13, 42)"
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self.assertFalse(self.extract_tables(query))
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def test_select_array(self):
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query = """
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SELECT ARRAY[1, 2, 3] AS my_array
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FROM t1 LIMIT 10
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"""
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self.assertEqual({Table("t1")}, self.extract_tables(query))
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def test_select_if(self):
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query = """
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SELECT IF(CARDINALITY(my_array) >= 3, my_array[3], NULL)
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FROM t1 LIMIT 10
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"""
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self.assertEqual({Table("t1")}, self.extract_tables(query))
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# SHOW TABLES ((FROM | IN) qualifiedName)? (LIKE pattern=STRING)?
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def test_show_tables(self):
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query = "SHOW TABLES FROM s1 like '%order%'"
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# TODO: figure out what should code do here
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self.assertEqual({Table("s1")}, self.extract_tables(query))
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# Expected behavior is below, it is fixed in sqlparse>=3.1
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# However sqlparse==3.1 breaks some sql formatting.
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# self.assertEqual(set(), self.extract_tables(query))
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# SHOW COLUMNS (FROM | IN) qualifiedName
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def test_show_columns(self):
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query = "SHOW COLUMNS FROM t1"
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self.assertEqual({Table("t1")}, self.extract_tables(query))
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def test_where_subquery(self):
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query = """
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SELECT name
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FROM t1
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WHERE regionkey = (SELECT max(regionkey) FROM t2)
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"""
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self.assertEqual({Table("t1"), Table("t2")}, self.extract_tables(query))
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query = """
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SELECT name
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FROM t1
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WHERE regionkey IN (SELECT regionkey FROM t2)
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"""
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self.assertEqual({Table("t1"), Table("t2")}, self.extract_tables(query))
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query = """
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SELECT name
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FROM t1
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WHERE regionkey EXISTS (SELECT regionkey FROM t2)
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"""
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self.assertEqual({Table("t1"), Table("t2")}, self.extract_tables(query))
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# DESCRIBE | DESC qualifiedName
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def test_describe(self):
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self.assertEqual({Table("t1")}, self.extract_tables("DESCRIBE t1"))
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# SHOW PARTITIONS FROM qualifiedName (WHERE booleanExpression)?
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# (ORDER BY sortItem (',' sortItem)*)? (LIMIT limit=(INTEGER_VALUE | ALL))?
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def test_show_partitions(self):
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query = """
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SHOW PARTITIONS FROM orders
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WHERE ds >= '2013-01-01' ORDER BY ds DESC;
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"""
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self.assertEqual({Table("orders")}, self.extract_tables(query))
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def test_join(self):
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query = "SELECT t1.*, t2.* FROM t1 JOIN t2 ON t1.a = t2.a;"
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self.assertEqual({Table("t1"), Table("t2")}, self.extract_tables(query))
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# subquery + join
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query = """
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SELECT a.date, b.name FROM
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left_table a
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JOIN (
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SELECT
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CAST((b.year) as VARCHAR) date,
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name
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FROM right_table
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) b
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ON a.date = b.date
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"""
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self.assertEqual(
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{Table("left_table"), Table("right_table")}, self.extract_tables(query)
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)
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query = """
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SELECT a.date, b.name FROM
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left_table a
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LEFT INNER JOIN (
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SELECT
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CAST((b.year) as VARCHAR) date,
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name
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FROM right_table
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) b
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ON a.date = b.date
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"""
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self.assertEqual(
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{Table("left_table"), Table("right_table")}, self.extract_tables(query)
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)
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query = """
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SELECT a.date, b.name FROM
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left_table a
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RIGHT OUTER JOIN (
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SELECT
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CAST((b.year) as VARCHAR) date,
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name
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FROM right_table
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) b
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ON a.date = b.date
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"""
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self.assertEqual(
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{Table("left_table"), Table("right_table")}, self.extract_tables(query)
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)
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query = """
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SELECT a.date, b.name FROM
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left_table a
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FULL OUTER JOIN (
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SELECT
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CAST((b.year) as VARCHAR) date,
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name
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FROM right_table
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) b
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ON a.date = b.date
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"""
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self.assertEqual(
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{Table("left_table"), Table("right_table")}, self.extract_tables(query)
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)
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# TODO: add SEMI join support, SQL Parse does not handle it.
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# query = """
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# SELECT a.date, b.name FROM
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# left_table a
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# LEFT SEMI JOIN (
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# SELECT
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# CAST((b.year) as VARCHAR) date,
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# name
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# FROM right_table
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# ) b
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# ON a.date = b.date
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# """
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# self.assertEqual({'left_table', 'right_table'},
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# sql_parse.extract_tables(query))
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def test_combinations(self):
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query = """
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SELECT * FROM t1
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WHERE s11 > ANY
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(SELECT * FROM t1 UNION ALL SELECT * FROM (
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SELECT t6.*, t3.* FROM t6 JOIN t3 ON t6.a = t3.a) tmp_join
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WHERE NOT EXISTS
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(SELECT * FROM t3
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WHERE ROW(5*t3.s1,77)=
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(SELECT 50,11*s1 FROM t4)));
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"""
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self.assertEqual(
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{Table("t1"), Table("t3"), Table("t4"), Table("t6")},
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self.extract_tables(query),
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)
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query = """
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SELECT * FROM (SELECT * FROM (SELECT * FROM (SELECT * FROM EmployeeS)
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AS S1) AS S2) AS S3;
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"""
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self.assertEqual({Table("EmployeeS")}, self.extract_tables(query))
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def test_with(self):
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query = """
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WITH
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x AS (SELECT a FROM t1),
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y AS (SELECT a AS b FROM t2),
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z AS (SELECT b AS c FROM t3)
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SELECT c FROM z;
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"""
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self.assertEqual(
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{Table("t1"), Table("t2"), Table("t3")}, self.extract_tables(query)
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)
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query = """
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WITH
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x AS (SELECT a FROM t1),
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y AS (SELECT a AS b FROM x),
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z AS (SELECT b AS c FROM y)
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SELECT c FROM z;
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"""
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self.assertEqual({Table("t1")}, self.extract_tables(query))
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def test_reusing_aliases(self):
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query = """
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with q1 as ( select key from q2 where key = '5'),
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q2 as ( select key from src where key = '5')
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select * from (select key from q1) a;
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"""
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self.assertEqual({Table("src")}, self.extract_tables(query))
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def test_multistatement(self):
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query = "SELECT * FROM t1; SELECT * FROM t2"
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self.assertEqual({Table("t1"), Table("t2")}, self.extract_tables(query))
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query = "SELECT * FROM t1; SELECT * FROM t2;"
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self.assertEqual({Table("t1"), Table("t2")}, self.extract_tables(query))
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def test_update_not_select(self):
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sql = ParsedQuery("UPDATE t1 SET col1 = NULL")
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self.assertEqual(False, sql.is_select())
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def test_set(self):
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sql = ParsedQuery(
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"""
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-- comment
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SET hivevar:desc='Legislators';
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"""
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)
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self.assertEqual(True, sql.is_set())
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self.assertEqual(False, sql.is_select())
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self.assertEqual(True, ParsedQuery("set hivevar:desc='bla'").is_set())
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self.assertEqual(False, ParsedQuery("SELECT 1").is_set())
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def test_show(self):
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sql = ParsedQuery(
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"""
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-- comment
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SHOW LOCKS test EXTENDED;
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-- comment
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"""
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)
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self.assertEqual(True, sql.is_show())
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self.assertEqual(False, sql.is_select())
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self.assertEqual(True, ParsedQuery("SHOW TABLES").is_show())
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self.assertEqual(True, ParsedQuery("shOw TABLES").is_show())
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self.assertEqual(True, ParsedQuery("show TABLES").is_show())
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self.assertEqual(False, ParsedQuery("SELECT 1").is_show())
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def test_explain(self):
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sql = ParsedQuery("EXPLAIN SELECT 1")
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self.assertEqual(True, sql.is_explain())
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self.assertEqual(False, sql.is_select())
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def test_complex_extract_tables(self):
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query = """SELECT sum(m_examples) AS "sum__m_example"
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FROM
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(SELECT COUNT(DISTINCT id_userid) AS m_examples,
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some_more_info
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FROM my_b_table b
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JOIN my_t_table t ON b.ds=t.ds
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JOIN my_l_table l ON b.uid=l.uid
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WHERE b.rid IN
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(SELECT other_col
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FROM inner_table)
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AND l.bla IN ('x', 'y')
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GROUP BY 2
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ORDER BY 2 ASC) AS "meh"
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ORDER BY "sum__m_example" DESC
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LIMIT 10;"""
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self.assertEqual(
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{
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Table("my_l_table"),
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Table("my_b_table"),
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Table("my_t_table"),
|
||||
Table("inner_table"),
|
||||
},
|
||||
self.extract_tables(query),
|
||||
)
|
||||
|
||||
def test_complex_extract_tables2(self):
|
||||
query = """SELECT *
|
||||
FROM table_a AS a, table_b AS b, table_c as c
|
||||
WHERE a.id = b.id and b.id = c.id"""
|
||||
self.assertEqual(
|
||||
{Table("table_a"), Table("table_b"), Table("table_c")},
|
||||
self.extract_tables(query),
|
||||
)
|
||||
|
||||
def test_mixed_from_clause(self):
|
||||
query = """SELECT *
|
||||
FROM table_a AS a, (select * from table_b) AS b, table_c as c
|
||||
WHERE a.id = b.id and b.id = c.id"""
|
||||
self.assertEqual(
|
||||
{Table("table_a"), Table("table_b"), Table("table_c")},
|
||||
self.extract_tables(query),
|
||||
)
|
||||
|
||||
def test_nested_selects(self):
|
||||
query = """
|
||||
select (extractvalue(1,concat(0x7e,(select GROUP_CONCAT(TABLE_NAME)
|
||||
from INFORMATION_SCHEMA.COLUMNS
|
||||
WHERE TABLE_SCHEMA like "%bi%"),0x7e)));
|
||||
"""
|
||||
self.assertEqual(
|
||||
{Table("COLUMNS", "INFORMATION_SCHEMA")}, self.extract_tables(query)
|
||||
)
|
||||
query = """
|
||||
select (extractvalue(1,concat(0x7e,(select GROUP_CONCAT(COLUMN_NAME)
|
||||
from INFORMATION_SCHEMA.COLUMNS
|
||||
WHERE TABLE_NAME="bi_achivement_daily"),0x7e)));
|
||||
"""
|
||||
self.assertEqual(
|
||||
{Table("COLUMNS", "INFORMATION_SCHEMA")}, self.extract_tables(query)
|
||||
)
|
||||
|
||||
def test_complex_extract_tables3(self):
|
||||
query = """SELECT somecol AS somecol
|
||||
FROM
|
||||
(WITH bla AS
|
||||
(SELECT col_a
|
||||
FROM a
|
||||
WHERE 1=1
|
||||
AND column_of_choice NOT IN
|
||||
( SELECT interesting_col
|
||||
FROM b ) ),
|
||||
rb AS
|
||||
( SELECT yet_another_column
|
||||
FROM
|
||||
( SELECT a
|
||||
FROM c
|
||||
GROUP BY the_other_col ) not_table
|
||||
LEFT JOIN bla foo ON foo.prop = not_table.bad_col0
|
||||
WHERE 1=1
|
||||
GROUP BY not_table.bad_col1 ,
|
||||
not_table.bad_col2 ,
|
||||
ORDER BY not_table.bad_col_3 DESC ,
|
||||
not_table.bad_col4 ,
|
||||
not_table.bad_col5) SELECT random_col
|
||||
FROM d
|
||||
WHERE 1=1
|
||||
UNION ALL SELECT even_more_cols
|
||||
FROM e
|
||||
WHERE 1=1
|
||||
UNION ALL SELECT lets_go_deeper
|
||||
FROM f
|
||||
WHERE 1=1
|
||||
WHERE 2=2
|
||||
GROUP BY last_col
|
||||
LIMIT 50000;"""
|
||||
self.assertEqual(
|
||||
{Table("a"), Table("b"), Table("c"), Table("d"), Table("e"), Table("f")},
|
||||
self.extract_tables(query),
|
||||
)
|
||||
|
||||
def test_complex_cte_with_prefix(self):
|
||||
query = """
|
||||
WITH CTE__test (SalesPersonID, SalesOrderID, SalesYear)
|
||||
AS (
|
||||
SELECT SalesPersonID, SalesOrderID, YEAR(OrderDate) AS SalesYear
|
||||
FROM SalesOrderHeader
|
||||
WHERE SalesPersonID IS NOT NULL
|
||||
)
|
||||
SELECT SalesPersonID, COUNT(SalesOrderID) AS TotalSales, SalesYear
|
||||
FROM CTE__test
|
||||
GROUP BY SalesYear, SalesPersonID
|
||||
ORDER BY SalesPersonID, SalesYear;
|
||||
"""
|
||||
self.assertEqual({Table("SalesOrderHeader")}, self.extract_tables(query))
|
||||
|
||||
def test_get_query_with_new_limit_comment(self):
|
||||
sql = "SELECT * FROM birth_names -- SOME COMMENT"
|
||||
parsed = ParsedQuery(sql)
|
||||
newsql = parsed.set_or_update_query_limit(1000)
|
||||
self.assertEqual(newsql, sql + "\nLIMIT 1000")
|
||||
|
||||
def test_get_query_with_new_limit_comment_with_limit(self):
|
||||
sql = "SELECT * FROM birth_names -- SOME COMMENT WITH LIMIT 555"
|
||||
parsed = ParsedQuery(sql)
|
||||
newsql = parsed.set_or_update_query_limit(1000)
|
||||
self.assertEqual(newsql, sql + "\nLIMIT 1000")
|
||||
|
||||
def test_get_query_with_new_limit_lower(self):
|
||||
sql = "SELECT * FROM birth_names LIMIT 555"
|
||||
parsed = ParsedQuery(sql)
|
||||
newsql = parsed.set_or_update_query_limit(1000)
|
||||
# not applied as new limit is higher
|
||||
expected = "SELECT * FROM birth_names LIMIT 555"
|
||||
self.assertEqual(newsql, expected)
|
||||
|
||||
def test_get_query_with_new_limit_upper(self):
|
||||
sql = "SELECT * FROM birth_names LIMIT 1555"
|
||||
parsed = ParsedQuery(sql)
|
||||
newsql = parsed.set_or_update_query_limit(1000)
|
||||
# applied as new limit is lower
|
||||
expected = "SELECT * FROM birth_names LIMIT 1000"
|
||||
self.assertEqual(newsql, expected)
|
||||
|
||||
def test_basic_breakdown_statements(self):
|
||||
multi_sql = """
|
||||
SELECT * FROM birth_names;
|
||||
SELECT * FROM birth_names LIMIT 1;
|
||||
"""
|
||||
parsed = ParsedQuery(multi_sql)
|
||||
statements = parsed.get_statements()
|
||||
self.assertEqual(len(statements), 2)
|
||||
expected = ["SELECT * FROM birth_names", "SELECT * FROM birth_names LIMIT 1"]
|
||||
self.assertEqual(statements, expected)
|
||||
|
||||
def test_messy_breakdown_statements(self):
|
||||
multi_sql = """
|
||||
SELECT 1;\t\n\n\n \t
|
||||
\t\nSELECT 2;
|
||||
SELECT * FROM birth_names;;;
|
||||
SELECT * FROM birth_names LIMIT 1
|
||||
"""
|
||||
parsed = ParsedQuery(multi_sql)
|
||||
statements = parsed.get_statements()
|
||||
self.assertEqual(len(statements), 4)
|
||||
expected = [
|
||||
"SELECT 1",
|
||||
"SELECT 2",
|
||||
"SELECT * FROM birth_names",
|
||||
"SELECT * FROM birth_names LIMIT 1",
|
||||
]
|
||||
self.assertEqual(statements, expected)
|
||||
|
||||
def test_identifier_list_with_keyword_as_alias(self):
|
||||
query = """
|
||||
WITH
|
||||
f AS (SELECT * FROM foo),
|
||||
match AS (SELECT * FROM f)
|
||||
SELECT * FROM match
|
||||
"""
|
||||
self.assertEqual({Table("foo")}, self.extract_tables(query))
|
||||
|
||||
def test_sqlparse_formatting(self):
|
||||
# sqlparse 0.3.1 has a bug and removes space between from and from_unixtime while formatting:
|
||||
# SELECT extract(HOUR\n fromfrom_unixtime(hour_ts)
|
||||
# AT TIME ZONE 'America/Los_Angeles')\nfrom table
|
||||
self.assertEqual(
|
||||
"SELECT extract(HOUR\n from from_unixtime(hour_ts) "
|
||||
"AT TIME ZONE 'America/Los_Angeles')\nfrom table",
|
||||
sqlparse.format(
|
||||
"SELECT extract(HOUR from from_unixtime(hour_ts) AT TIME ZONE 'America/Los_Angeles') from table",
|
||||
reindent=True,
|
||||
),
|
||||
)
|
||||
|
||||
def test_is_explain(self):
|
||||
query = """
|
||||
-- comment
|
||||
EXPLAIN select * from table
|
||||
-- comment 2
|
||||
"""
|
||||
parsed = ParsedQuery(query)
|
||||
self.assertEqual(parsed.is_explain(), True)
|
||||
|
||||
query = """
|
||||
-- comment
|
||||
EXPLAIN select * from table
|
||||
where col1 = 'something'
|
||||
-- comment 2
|
||||
|
||||
-- comment 3
|
||||
EXPLAIN select * from table
|
||||
where col1 = 'something'
|
||||
-- comment 4
|
||||
"""
|
||||
parsed = ParsedQuery(query)
|
||||
self.assertEqual(parsed.is_explain(), True)
|
||||
|
||||
query = """
|
||||
-- This is a comment
|
||||
-- this is another comment but with a space in the front
|
||||
EXPLAIN SELECT * FROM TABLE
|
||||
"""
|
||||
parsed = ParsedQuery(query)
|
||||
self.assertEqual(parsed.is_explain(), True)
|
||||
|
||||
query = """
|
||||
/* This is a comment
|
||||
with stars instead */
|
||||
EXPLAIN SELECT * FROM TABLE
|
||||
"""
|
||||
parsed = ParsedQuery(query)
|
||||
self.assertEqual(parsed.is_explain(), True)
|
||||
|
||||
query = """
|
||||
-- comment
|
||||
select * from table
|
||||
where col1 = 'something'
|
||||
-- comment 2
|
||||
"""
|
||||
parsed = ParsedQuery(query)
|
||||
self.assertEqual(parsed.is_explain(), False)
|
||||
|
||||
def test_is_valid_ctas(self):
|
||||
"""A valid CTAS has a SELECT as its last statement"""
|
||||
query = "SELECT * FROM table"
|
||||
parsed = ParsedQuery(query, strip_comments=True)
|
||||
assert parsed.is_valid_ctas()
|
||||
|
||||
query = """
|
||||
-- comment
|
||||
SELECT * FROM table
|
||||
-- comment 2
|
||||
"""
|
||||
parsed = ParsedQuery(query, strip_comments=True)
|
||||
assert parsed.is_valid_ctas()
|
||||
|
||||
query = """
|
||||
-- comment
|
||||
SET @value = 42;
|
||||
SELECT @value as foo;
|
||||
-- comment 2
|
||||
"""
|
||||
parsed = ParsedQuery(query, strip_comments=True)
|
||||
assert parsed.is_valid_ctas()
|
||||
|
||||
query = """
|
||||
-- comment
|
||||
EXPLAIN SELECT * FROM table
|
||||
-- comment 2
|
||||
"""
|
||||
parsed = ParsedQuery(query, strip_comments=True)
|
||||
assert not parsed.is_valid_ctas()
|
||||
|
||||
query = """
|
||||
SELECT * FROM table;
|
||||
INSERT INTO TABLE (foo) VALUES (42);
|
||||
"""
|
||||
parsed = ParsedQuery(query, strip_comments=True)
|
||||
assert not parsed.is_valid_ctas()
|
||||
|
||||
def test_is_valid_cvas(self):
|
||||
"""A valid CVAS has a single SELECT statement"""
|
||||
query = "SELECT * FROM table"
|
||||
parsed = ParsedQuery(query, strip_comments=True)
|
||||
assert parsed.is_valid_cvas()
|
||||
|
||||
query = """
|
||||
-- comment
|
||||
SELECT * FROM table
|
||||
-- comment 2
|
||||
"""
|
||||
parsed = ParsedQuery(query, strip_comments=True)
|
||||
assert parsed.is_valid_cvas()
|
||||
|
||||
query = """
|
||||
-- comment
|
||||
SET @value = 42;
|
||||
SELECT @value as foo;
|
||||
-- comment 2
|
||||
"""
|
||||
parsed = ParsedQuery(query, strip_comments=True)
|
||||
assert not parsed.is_valid_cvas()
|
||||
|
||||
query = """
|
||||
-- comment
|
||||
EXPLAIN SELECT * FROM table
|
||||
-- comment 2
|
||||
"""
|
||||
parsed = ParsedQuery(query, strip_comments=True)
|
||||
assert not parsed.is_valid_ctas()
|
||||
|
||||
query = """
|
||||
SELECT * FROM table;
|
||||
INSERT INTO TABLE (foo) VALUES (42);
|
||||
"""
|
||||
parsed = ParsedQuery(query, strip_comments=True)
|
||||
assert not parsed.is_valid_ctas()
|
||||
|
||||
def test_strip_comments_from_sql(self):
|
||||
"""Test that we are able to strip comments out of SQL stmts"""
|
||||
|
||||
assert (
|
||||
strip_comments_from_sql("SELECT col1, col2 FROM table1")
|
||||
== "SELECT col1, col2 FROM table1"
|
||||
)
|
||||
assert (
|
||||
strip_comments_from_sql("SELECT col1, col2 FROM table1\n-- comment")
|
||||
== "SELECT col1, col2 FROM table1\n"
|
||||
)
|
||||
assert (
|
||||
strip_comments_from_sql("SELECT '--abc' as abc, col2 FROM table1\n")
|
||||
== "SELECT '--abc' as abc, col2 FROM table1"
|
||||
)
|
File diff suppressed because it is too large
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Reference in New Issue