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2718 | 2718 | ┃ how/join │ <span class="hljs-string">'outer'</span> │ <span class="hljs-string">'inner'</span> │ <span class="hljs-string">'left'</span> │ description ┃
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2719 | 2719 | ┠────────────────────────┼───────────────┼────────────┼────────────┼──────────────────────────┨
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2720 | 2720 | ┃ l.merge(r, on=<span class="hljs-string">'y'</span>, │ x y z │ x y z │ x y z │ Joins/merges on column. ┃
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2721 |
| -┃ how=…) │ <span class="hljs-number">0</span> <span class="hljs-number">1</span> <span class="hljs-number">2</span> . │ <span class="hljs-number">3</span> <span class="hljs-number">4</span> <span class="hljs-number">5</span> │ <span class="hljs-number">1</span> <span class="hljs-number">2</span> . │ Also accepts left_on <span class="hljs-keyword">and</span> ┃ |
| 2721 | +┃ how=…) │ <span class="hljs-number">0</span> <span class="hljs-number">1</span> <span class="hljs-number">2</span> . │ <span class="hljs-number">3</span> <span class="hljs-number">4</span> <span class="hljs-number">5</span> │ <span class="hljs-number">1</span> <span class="hljs-number">2</span> . │ Also accepts left_on and ┃ |
2722 | 2722 | ┃ │ <span class="hljs-number">1</span> <span class="hljs-number">3</span> <span class="hljs-number">4</span> <span class="hljs-number">5</span> │ │ <span class="hljs-number">3</span> <span class="hljs-number">4</span> <span class="hljs-number">5</span> │ right_on parameters. ┃
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2723 | 2723 | ┃ │ <span class="hljs-number">2</span> . <span class="hljs-number">6</span> <span class="hljs-number">7</span> │ │ │ Uses <span class="hljs-string">'inner'</span> by default. ┃
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2724 | 2724 | ┠────────────────────────┼───────────────┼────────────┼────────────┼──────────────────────────┨
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2730 | 2730 | ┃ pd.concat([l, r], │ x y z │ y │ │ Adds rows at the bottom. ┃
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2731 | 2731 | ┃ axis=<span class="hljs-number">0</span>, │ a <span class="hljs-number">1</span> <span class="hljs-number">2</span> . │ <span class="hljs-number">2</span> │ │ Uses <span class="hljs-string">'outer'</span> by default. ┃
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2732 | 2732 | ┃ join=…) │ b <span class="hljs-number">3</span> <span class="hljs-number">4</span> . │ <span class="hljs-number">4</span> │ │ By default works the ┃
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2733 |
| -┃ │ b . <span class="hljs-number">4</span> <span class="hljs-number">5</span> │ <span class="hljs-number">4</span> │ │ same <span class="hljs-keyword">as</span> `l.append(r)`. ┃ |
| 2733 | +┃ │ b . <span class="hljs-number">4</span> <span class="hljs-number">5</span> │ <span class="hljs-number">4</span> │ │ same as `l.append(r)`. ┃ |
2734 | 2734 | ┃ │ c . <span class="hljs-number">6</span> <span class="hljs-number">7</span> │ <span class="hljs-number">6</span> │ │ ┃
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2735 | 2735 | ┠────────────────────────┼───────────────┼────────────┼────────────┼──────────────────────────┨
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2736 | 2736 | ┃ pd.concat([l, r], │ x y y z │ │ │ Adds columns at the ┃
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2737 | 2737 | ┃ axis=<span class="hljs-number">1</span>, │ a <span class="hljs-number">1</span> <span class="hljs-number">2</span> . . │ x y y z │ │ right end. ┃
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2738 | 2738 | ┃ join=…) │ b <span class="hljs-number">3</span> <span class="hljs-number">4</span> <span class="hljs-number">4</span> <span class="hljs-number">5</span> │ <span class="hljs-number">3</span> <span class="hljs-number">4</span> <span class="hljs-number">4</span> <span class="hljs-number">5</span> │ │ Uses <span class="hljs-string">'outer'</span> by default. ┃
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2739 | 2739 | ┃ │ c . . <span class="hljs-number">6</span> <span class="hljs-number">7</span> │ │ │ ┃
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2740 | 2740 | ┠────────────────────────┼───────────────┼────────────┼────────────┼──────────────────────────┨
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2741 |
| -┃ l.combine_first(r) │ x y z │ │ │ Adds missing rows <span class="hljs-keyword">and</span> ┃ |
| 2741 | +┃ l.combine_first(r) │ x y z │ │ │ Adds missing rows and ┃ |
2742 | 2742 | ┃ │ a <span class="hljs-number">1</span> <span class="hljs-number">2</span> . │ │ │ columns. ┃
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2743 | 2743 | ┃ │ b <span class="hljs-number">3</span> <span class="hljs-number">4</span> <span class="hljs-number">5</span> │ │ │ ┃
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2744 | 2744 | ┃ │ c . <span class="hljs-number">6</span> <span class="hljs-number">7</span> │ │ │ ┃
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