BUG: Raise MergeError when suffixes result in duplicate column names … #23723

Job	Run time
python-dev	0s
Linux-32-bit	18m 29s
Linux-Musl	15m 10s
Pyodide build	25m 54s
windows-latest actions-312.yaml	37m 22s
macos-13 actions-310.yaml	32m 20s
macos-13 actions-311.yaml	39m 23s
macos-14 actions-310.yaml	29m 31s
windows-latest actions-311.yaml	36m 41s
macos-13 actions-313.yaml	28m 1s
macos-13 actions-312.yaml	26m 32s
windows-latest actions-313.yaml	41m 20s
macos-14 actions-312.yaml	30m 24s
macos-14 actions-313.yaml	31m 0s
macos-14 actions-311.yaml	27m 27s
windows-latest actions-310.yaml	36m 11s
ubuntu-24.04-arm actions-312.yaml	36m 19s
Future infer strings (without pyarrow)	37m 44s
Downstream Compat	5m 13s
Numpy Dev	16m 52s
Locale: zh_CN	24m 7s
ubuntu-24.04 actions-313.yaml	48m 18s
Pypy	1m 18s
ubuntu-24.04-arm actions-311.yaml	35m 55s
Pyarrow Nightly	20m 14s
ubuntu-24.04 actions-312.yaml	44m 3s
Minimum Versions	23m 28s
ubuntu-24.04 actions-311.yaml	43m 5s
Freethreading	21m 0s
Locale: it_IT	24m 9s
ubuntu-24.04-arm actions-313.yaml	33m 45s
ubuntu-24.04 actions-310.yaml	47m 36s
Future infer strings	44m 35s
ubuntu-24.04-arm actions-310.yaml	35m 58s
	16h 39m 24s

Provide feedback