odps/df/backends/odpssql/compiler.py (4 lines):
	- line 875: # FIXME quite a few operations cannot support by internal function
	- line 898: # TODO: any better solution?
	- line 972: # FIXME quite a few operations cannot support by internal function
	- line 1422: # FIXME: just ignore shorter than second


odps/df/expr/merge.py (2 lines):
	- line 281: # FIXME: sometimes may be wrong, e.g. t3 = t1.join(t2, 'name')); t4.join(t3, t4.id == t3.id)
	- line 548: # TODO: move to analyzer, do it before analyze and optimize


odps/df/backends/optimize/core.py (2 lines):
	- line 197: # TODO think way to compact in this situation
	- line 261: # FIXME: consider name with upper letters


odps/df/backends/rewriter.py (2 lines):
	- line 68: # FIXME how to handle nested reduction?
	- line 126: # FIXME how to handle nested reduction?


odps/df/expr/window.py (1 line):
	- line 607: StringSequenceGroupBy.cumsum = cumsum  # FIXME: should we support string?


odps/df/backends/seahawks/compiler.py (1 line):
	- line 72: # FIXME: decimal and datetime are not supported by seahawks by now


odps/df/expr/reduction.py (1 line):
	- line 450: # TODO: dynamic may need rebuilt


odps/mars_extension/oscar/dataframe/datastore.py (1 line):
	- line 387: # FIXME If this commit failed or the process crashed, the whole write will still raise error.


odps/df/backends/pd/compiler.py (1 line):
	- line 977: # FIXME: consider the name which is unicode


odps/df/expr/formatter.py (1 line):
	- line 222: if self._need_output_seq_name(expr, indent=indent):  # TODO: need to check


odps/df/expr/core.py (1 line):
	- line 253: # TODO: add this in the future


odps/superset_odps.py (1 line):
	- line 256: # TODO: implement


odps/df/backends/odpssql/engine.py (1 line):
	- line 668: # TODO: support cache partition


odps/lib/enum.py (1 line):
	- line 499: # TODO: replace the frame hack if a blessed way to know the calling


odps/df/backends/sqlalchemy/compiler.py (1 line):
	- line 515: # TODO: MEDIAN does not support