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The following commit(s) were added to refs/heads/main by this push:
new 86cfd1244a Fix error when SnowflakeHook take empty list in `sql` param
(#23767)
86cfd1244a is described below
commit 86cfd1244a641a8f17c9b33a34399d9be264f556
Author: Dmytro Kazanzhy <dkazan...@gmail.com>
AuthorDate: Fri May 20 06:59:25 2022 +0300
Fix error when SnowflakeHook take empty list in `sql` param (#23767)
---
airflow/providers/snowflake/hooks/snowflake.py | 14 +++++++++-----
tests/providers/snowflake/hooks/test_snowflake.py | 8 ++++++++
2 files changed, 17 insertions(+), 5 deletions(-)
diff --git a/airflow/providers/snowflake/hooks/snowflake.py
b/airflow/providers/snowflake/hooks/snowflake.py
index 75ddaa59de..29a4b63156 100644
--- a/airflow/providers/snowflake/hooks/snowflake.py
+++ b/airflow/providers/snowflake/hooks/snowflake.py
@@ -308,14 +308,18 @@ class SnowflakeHook(DbApiHook):
"""
self.query_ids = []
+ if isinstance(sql, str):
+ split_statements_tuple = split_statements(StringIO(sql))
+ sql = [sql_string for sql_string, _ in split_statements_tuple if
sql_string]
+
+ if sql:
+ self.log.debug("Executing %d statements against Snowflake DB",
len(sql))
+ else:
+ raise ValueError("List of SQL statements is empty")
+
with closing(self.get_conn()) as conn:
self.set_autocommit(conn, autocommit)
- if isinstance(sql, str):
- split_statements_tuple = split_statements(StringIO(sql))
- sql = [sql_string for sql_string, _ in split_statements_tuple
if sql_string]
-
- self.log.debug("Executing %d statements against Snowflake DB",
len(sql))
# SnowflakeCursor does not extend ContextManager, so we have to
ignore mypy error here
with closing(conn.cursor(DictCursor)) as cur: # type:
ignore[type-var]
diff --git a/tests/providers/snowflake/hooks/test_snowflake.py
b/tests/providers/snowflake/hooks/test_snowflake.py
index 74c6fb03e1..97935e66f5 100644
--- a/tests/providers/snowflake/hooks/test_snowflake.py
+++ b/tests/providers/snowflake/hooks/test_snowflake.py
@@ -515,3 +515,11 @@ class TestPytestSnowflakeHook:
assert status is False
assert msg == 'Connection Errors'
mock_run.assert_called_once_with(sql='select 1')
+
+ def test_empty_sql_parameter(self):
+ hook = SnowflakeHook()
+
+ for empty_statement in ([], '', '\n'):
+ with pytest.raises(ValueError) as err:
+ hook.run(sql=empty_statement)
+ assert err.value.args[0] == "List of SQL statements is empty"
