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-rw-r--r--activerecord/lib/active_record/collection_cache_key.rb2
1 files changed, 1 insertions, 1 deletions
diff --git a/activerecord/lib/active_record/collection_cache_key.rb b/activerecord/lib/active_record/collection_cache_key.rb
index 5dcc98424a..8d41c0d799 100644
--- a/activerecord/lib/active_record/collection_cache_key.rb
+++ b/activerecord/lib/active_record/collection_cache_key.rb
@@ -16,7 +16,7 @@ module ActiveRecord
query = collection
.unscope(:select)
- .select("COUNT(*) AS size", "MAX(#{column}) AS timestamp")
+ .select("COUNT(*) AS #{connection.quote_column_name("size")}", "MAX(#{column}) AS timestamp")
.unscope(:order)
result = connection.select_one(query)