fix: update decimal column name in table creation for system tests

Author: RaphDal

test/system_test.py

@@ -275,7 +275,7 @@ def test_decimal_py_obj(self):
             self.skipTest('old server does not support decimal')
 
         table_name = uuid.uuid4().hex
-        self.qdb_plain.http_sql_query(f'CREATE TABLE {table_name} (prices DECIMAL(18,3), timestamp TIMESTAMP) TIMESTAMP(timestamp) PARTITION BY DAY;')
+        self.qdb_plain.http_sql_query(f'CREATE TABLE {table_name} (dec_col DECIMAL(18,3), timestamp TIMESTAMP) TIMESTAMP(timestamp) PARTITION BY DAY;')
 
         pending = None
         with qi.Sender('http', 'localhost', self.qdb_plain.http_server_port) as sender: