Use correct chain length when downloading rows

Author: michaelosthege

mcbackend/__init__.py

@@ -20,4 +20,4 @@
     pass
 
 
-__version__ = "0.2.1"
+__version__ = "0.2.2"

mcbackend/backends/clickhouse.py

@@ -214,8 +214,9 @@ def _get_rows(
         slc: slice = slice(None),
     ) -> numpy.ndarray:
         self._commit()
-        where, reverse = where_slice(slc, self._draw_idx)
-        data = self._client.execute(f"SELECT (`{var_name}`) FROM {self.cid} {where};")
+        where, reverse = where_slice(slc, len(self))
+        query = f"SELECT (`{var_name}`) FROM {self.cid} {where};"
+        data = self._client.execute(query)
         draws = len(data)
         if reverse:
             data = reversed(data)