BUG: right merge not preserve row order (#27453)#27762

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bongolegend wants to merge 24 commits intopandas-dev:masterfrom

bongolegend:27453-right-merge-order

Commits on Jan 1, 2020

add failing test to check row order preservation
Nico Cernek
committed
correct the imports
Nico Cernek
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change order of args in test assertion
Nico Cernek
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broken commit with a bunch of print statements and comments
Nico Cernek
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add test for left merge
Nico Cernek
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swap left and right keys when how == "right"
Nico Cernek
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correct old test: right-merge row order is now the same as the right df
Nico Cernek
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clean up spacing and delete temp code
Nico Cernek
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add whatsnew
Nico Cernek
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replace .from_records with default constructor
Nico Cernek
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add GH issue # to tests
Nico Cernek
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revert commit ed54bec7e
Nico Cernek
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change logic to swap left and right if how==right
Nico Cernek
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clean formatting
Nico Cernek
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rename vars and add comment for clarity
Nico Cernek
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combine tests into one
Nico Cernek
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update whatsnew
Nico Cernek
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Update doc/source/whatsnew/v1.0.0.rst

Nico Cernek
and
WillAyd
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add before and after examples
Nico Cernek
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linting
Nico Cernek
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cleanup
Nico Cernek
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Commits on Jan 23, 2020

changes requested by jreback
Nico Cernek
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update docs
Nico Cernek
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Merge branch 'master' into 27453-right-merge-order
Nico Cernek
authored