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| <table width="100%" summary="page for union {SparkR}"><tr><td>union {SparkR}</td><td style="text-align: right;">R Documentation</td></tr></table> |
| |
| <h2>Return a new SparkDataFrame containing the union of rows</h2> |
| |
| <h3>Description</h3> |
| |
| <p>Return a new SparkDataFrame containing the union of rows in this SparkDataFrame |
| and another SparkDataFrame. This is equivalent to <code>UNION ALL</code> in SQL. |
| Input SparkDataFrames can have different schemas (names and data types). |
| </p> |
| |
| |
| <h3>Usage</h3> |
| |
| <pre> |
| union(x, y) |
| |
| unionAll(x, y) |
| |
| ## S4 method for signature 'SparkDataFrame,SparkDataFrame' |
| union(x, y) |
| |
| ## S4 method for signature 'SparkDataFrame,SparkDataFrame' |
| unionAll(x, y) |
| </pre> |
| |
| |
| <h3>Arguments</h3> |
| |
| <table summary="R argblock"> |
| <tr valign="top"><td><code>x</code></td> |
| <td> |
| <p>A SparkDataFrame</p> |
| </td></tr> |
| <tr valign="top"><td><code>y</code></td> |
| <td> |
| <p>A SparkDataFrame</p> |
| </td></tr> |
| </table> |
| |
| |
| <h3>Details</h3> |
| |
| <p>Note: This does not remove duplicate rows across the two SparkDataFrames. |
| Also as standard in SQL, this function resolves columns by position (not by name). |
| </p> |
| |
| |
| <h3>Value</h3> |
| |
| <p>A SparkDataFrame containing the result of the union. |
| </p> |
| |
| |
| <h3>Note</h3> |
| |
| <p>union since 2.0.0 |
| </p> |
| <p>unionAll since 1.4.0 |
| </p> |
| |
| |
| <h3>See Also</h3> |
| |
| <p><a href="rbind.html">rbind</a> <a href="unionByName.html">unionByName</a> |
| </p> |
| <p>Other SparkDataFrame functions: <code><a href="SparkDataFrame.html">SparkDataFrame-class</a></code>, |
| <code><a href="summarize.html">agg</a></code>, <code><a href="alias.html">alias</a></code>, |
| <code><a href="arrange.html">arrange</a></code>, <code><a href="as.data.frame.html">as.data.frame</a></code>, |
| <code><a href="attach.html">attach,SparkDataFrame-method</a></code>, |
| <code><a href="broadcast.html">broadcast</a></code>, <code><a href="cache.html">cache</a></code>, |
| <code><a href="checkpoint.html">checkpoint</a></code>, <code><a href="coalesce.html">coalesce</a></code>, |
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| |
| |
| <h3>Examples</h3> |
| |
| <pre><code class="r">## Not run: |
| ##D sparkR.session() |
| ##D df1 <- read.json(path) |
| ##D df2 <- read.json(path2) |
| ##D unioned <- union(df, df2) |
| ##D unions <- rbind(df, df2, df3, df4) |
| ## End(Not run) |
| </code></pre> |
| |
| |
| <hr /><div style="text-align: center;">[Package <em>SparkR</em> version 2.3.2 <a href="00Index.html">Index</a>]</div> |
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