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| <h1>Concatenate one or more Tables</h1> |
| <small class="dont-index">Source: <a href="https://github.com/apache/arrow/blob/main/r/R/table.R" class="external-link"><code>R/table.R</code></a></small> |
| <div class="d-none name"><code>concat_tables.Rd</code></div> |
| </div> |
| |
| <div class="ref-description section level2"> |
| <p>Concatenate one or more <a href="Table-class.html">Table</a> objects into a single table. This operation |
| does not copy array data, but instead creates new chunked arrays for each |
| column that point at existing array data.</p> |
| </div> |
| |
| <div class="section level2"> |
| <h2 id="ref-usage">Usage<a class="anchor" aria-label="anchor" href="#ref-usage"></a></h2> |
| <div class="sourceCode"><pre class="sourceCode r"><code><span><span class="fu">concat_tables</span><span class="op">(</span><span class="va">...</span>, unify_schemas <span class="op">=</span> <span class="cn">TRUE</span><span class="op">)</span></span></code></pre></div> |
| </div> |
| |
| <div class="section level2"> |
| <h2 id="arguments">Arguments<a class="anchor" aria-label="anchor" href="#arguments"></a></h2> |
| |
| |
| <dl><dt id="arg--">...<a class="anchor" aria-label="anchor" href="#arg--"></a></dt> |
| <dd><p>One or more <a href="Table-class.html">Table</a> or <a href="RecordBatch-class.html">RecordBatch</a> objects. RecordBatch objects |
| will be automatically converted to Tables.</p></dd> |
| |
| |
| <dt id="arg-unify-schemas">unify_schemas<a class="anchor" aria-label="anchor" href="#arg-unify-schemas"></a></dt> |
| <dd><p>If TRUE, the schemas of the tables will be first unified |
| with fields of the same name being merged, then each table will be promoted |
| to the unified schema before being concatenated. Otherwise, all tables should |
| have the same schema.</p></dd> |
| |
| </dl></div> |
| |
| <div class="section level2"> |
| <h2 id="ref-examples">Examples<a class="anchor" aria-label="anchor" href="#ref-examples"></a></h2> |
| <div class="sourceCode"><pre class="sourceCode r"><code><span class="r-in"><span><span class="va">tbl</span> <span class="op"><-</span> <span class="fu"><a href="table.html">arrow_table</a></span><span class="op">(</span>name <span class="op">=</span> <span class="fu"><a href="https://rdrr.io/r/base/colnames.html" class="external-link">rownames</a></span><span class="op">(</span><span class="va">mtcars</span><span class="op">)</span>, <span class="va">mtcars</span><span class="op">)</span></span></span> |
| <span class="r-in"><span><span class="va">prius</span> <span class="op"><-</span> <span class="fu"><a href="table.html">arrow_table</a></span><span class="op">(</span>name <span class="op">=</span> <span class="st">"Prius"</span>, mpg <span class="op">=</span> <span class="fl">58</span>, cyl <span class="op">=</span> <span class="fl">4</span>, disp <span class="op">=</span> <span class="fl">1.8</span><span class="op">)</span></span></span> |
| <span class="r-in"><span><span class="va">combined</span> <span class="op"><-</span> <span class="fu">concat_tables</span><span class="op">(</span><span class="va">tbl</span>, <span class="va">prius</span><span class="op">)</span></span></span> |
| <span class="r-in"><span><span class="fu"><a href="https://rdrr.io/r/utils/head.html" class="external-link">tail</a></span><span class="op">(</span><span class="va">combined</span><span class="op">)</span><span class="op">$</span><span class="fu">to_data_frame</span><span class="op">(</span><span class="op">)</span></span></span> |
| <span class="r-out co"><span class="r-pr">#></span> <span style="color: #949494;"># A tibble: 6 x 12</span></span> |
| <span class="r-out co"><span class="r-pr">#></span> name mpg cyl disp hp drat wt qsec vs am gear carb</span> |
| <span class="r-out co"><span class="r-pr">#></span> <span style="color: #949494; font-style: italic;"><chr></span> <span style="color: #949494; font-style: italic;"><dbl></span> <span style="color: #949494; font-style: italic;"><dbl></span> <span style="color: #949494; font-style: italic;"><dbl></span> <span style="color: #949494; font-style: italic;"><dbl></span> <span style="color: #949494; font-style: italic;"><dbl></span> <span style="color: #949494; font-style: italic;"><dbl></span> <span style="color: #949494; font-style: italic;"><dbl></span> <span style="color: #949494; font-style: italic;"><dbl></span> <span style="color: #949494; font-style: italic;"><dbl></span> <span style="color: #949494; font-style: italic;"><dbl></span> <span style="color: #949494; font-style: italic;"><dbl></span></span> |
| <span class="r-out co"><span class="r-pr">#></span> <span style="color: #BCBCBC;">1</span> Lotus Europa 30.4 4 95.1 113 3.77 1.51 16.9 1 1 5 2</span> |
| <span class="r-out co"><span class="r-pr">#></span> <span style="color: #BCBCBC;">2</span> Ford Panter~ 15.8 8 351 264 4.22 3.17 14.5 0 1 5 4</span> |
| <span class="r-out co"><span class="r-pr">#></span> <span style="color: #BCBCBC;">3</span> Ferrari Dino 19.7 6 145 175 3.62 2.77 15.5 0 1 5 6</span> |
| <span class="r-out co"><span class="r-pr">#></span> <span style="color: #BCBCBC;">4</span> Maserati Bo~ 15 8 301 335 3.54 3.57 14.6 0 1 5 8</span> |
| <span class="r-out co"><span class="r-pr">#></span> <span style="color: #BCBCBC;">5</span> Volvo 142E 21.4 4 121 109 4.11 2.78 18.6 1 1 4 2</span> |
| <span class="r-out co"><span class="r-pr">#></span> <span style="color: #BCBCBC;">6</span> Prius 58 4 1.8 <span style="color: #BB0000;">NA</span> <span style="color: #BB0000;">NA</span> <span style="color: #BB0000;">NA</span> <span style="color: #BB0000;">NA</span> <span style="color: #BB0000;">NA</span> <span style="color: #BB0000;">NA</span> <span style="color: #BB0000;">NA</span> <span style="color: #BB0000;">NA</span></span> |
| <span class="r-in"><span></span></span> |
| <span class="r-in"><span><span class="co"># Can also pass RecordBatch objects</span></span></span> |
| <span class="r-in"><span><span class="va">batch</span> <span class="op"><-</span> <span class="fu"><a href="record_batch.html">record_batch</a></span><span class="op">(</span>name <span class="op">=</span> <span class="st">"Volt"</span>, mpg <span class="op">=</span> <span class="fl">53</span>, cyl <span class="op">=</span> <span class="fl">4</span>, disp <span class="op">=</span> <span class="fl">1.5</span><span class="op">)</span></span></span> |
| <span class="r-in"><span><span class="va">combined2</span> <span class="op"><-</span> <span class="fu">concat_tables</span><span class="op">(</span><span class="va">tbl</span>, <span class="va">batch</span><span class="op">)</span></span></span> |
| </code></pre></div> |
| </div> |
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