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-rw-r--r--lib/sqlalchemy/engine/result.py9
1 files changed, 8 insertions, 1 deletions
diff --git a/lib/sqlalchemy/engine/result.py b/lib/sqlalchemy/engine/result.py
index 39f4fc50c..9208686e1 100644
--- a/lib/sqlalchemy/engine/result.py
+++ b/lib/sqlalchemy/engine/result.py
@@ -215,10 +215,17 @@ class ResultMetaData(object):
self._keymap = {}
if not _baserowproxy_usecext:
- # keymap indexes by integer index...
+ # keymap indexes by integer index: this is only used
+ # in the pure Python BaseRowProxy.__getitem__
+ # implementation to avoid an expensive
+ # isinstance(key, util.int_types) in the most common
+ # case path
self._keymap.update([
(elem[0], (elem[3], elem[4], elem[0]))
for elem in raw
+ ] + [
+ (elem[0] - num_ctx_cols, (elem[3], elem[4], elem[0]))
+ for elem in raw
])
# processors in key order for certain per-row