BUG: pivot_table with overlapping values #22950

Job	Run time
Linux-32-bit	1m 36s
Pyodide build	1m 38s
Linux-Musl	1m 36s
python-freethreading	1m 38s
python-dev (macOS-13)	1m 13s
python-dev (macOS-14)	1m 39s
python-dev (ubuntu-22.04)	1m 35s
python-dev (windows-latest)	1m 34s
macos-13 actions-310.yaml	1m 17s
macos-13 actions-311.yaml	1m 55s
macos-13 actions-312.yaml	1m 14s
macos-14 actions-310.yaml	1m 36s
macos-14 actions-311.yaml	1m 21s
macos-14 actions-312.yaml	1m 36s
windows-latest actions-311.yaml	1m 37s
windows-latest actions-312.yaml	1m 35s
windows-latest actions-310.yaml	1m 33s
Minimum Versions	1m 23s
Future infer strings (without pyarrow)	1m 28s
Locale: zh_CN	1m 23s
Locale: it_IT	1m 32s
Downstream Compat	1m 24s
Numpy Dev	1m 39s
Pyarrow Nightly	1m 37s
Pypy	1m 42s
Future infer strings	1m 27s
ubuntu-22.04 actions-310.yaml	1m 20s
ubuntu-22.04 actions-311.yaml	1m 23s
ubuntu-22.04 actions-312.yaml	1m 38s
ubuntu-24.04-arm actions-311.yaml	1m 7s
ubuntu-24.04-arm actions-312.yaml	1m 22s
ubuntu-24.04-arm actions-310.yaml	1m 20s
	47m 58s

Provide feedback