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Su, Xiaomeng
76a5b1ee83
Reviewed-by: Pruthi, Vineet <vineet.pruthi@t-systems.com> Co-authored-by: Su, Xiaomeng <suxiaomeng1@huawei.com> Co-committed-by: Su, Xiaomeng <suxiaomeng1@huawei.com>
46 lines
5.0 KiB
HTML
46 lines
5.0 KiB
HTML
<a name="dli_08_0217"></a><a name="dli_08_0217"></a>
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<h1 class="topictitle1">Clearing Data</h1>
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<div id="body1578361312448"><div class="section" id="dli_08_0217__en-us_topic_0167303041_en-us_topic_0093946806_s9964bb020c52461992d2c7711fd7feed"><h4 class="sectiontitle">Function</h4><p id="dli_08_0217__en-us_topic_0167303041_en-us_topic_0093946806_a453a1e6d2a6e4b05a42b498a72d224bc">This statement is used to delete data from the DLI or OBS table.</p>
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</div>
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<div class="section" id="dli_08_0217__en-us_topic_0167303041_en-us_topic_0093946806_s13bf56fb20de4983b60dc6ad83bb2dd6"><h4 class="sectiontitle">Syntax</h4><div class="codecoloring" codetype="Sql" id="dli_08_0217__en-us_topic_0167303041_screen613005282410"><div class="highlight"><table class="highlighttable"><tr><td class="linenos"><div class="linenodiv"><pre><span class="normal">1</span></pre></div></td><td class="code"><div><pre><span></span><span class="k">TRUNCATE</span><span class="w"> </span><span class="k">TABLE</span><span class="w"> </span><span class="n">tablename</span><span class="w"> </span><span class="p">[</span><span class="n">PARTITION</span><span class="w"> </span><span class="p">(</span><span class="n">partcol1</span><span class="o">=</span><span class="n">val1</span><span class="p">,</span><span class="w"> </span><span class="n">partcol2</span><span class="o">=</span><span class="n">val2</span><span class="w"> </span><span class="p">...)];</span>
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</pre></div></td></tr></table></div>
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</div>
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</div>
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<div class="section" id="dli_08_0217__en-us_topic_0167303041_en-us_topic_0093946806_sc899843a7d8e47fc8a0afeb9b1287b4a"><h4 class="sectiontitle">Keywords</h4>
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<div class="tablenoborder"><table cellpadding="4" cellspacing="0" summary="" id="dli_08_0217__en-us_topic_0167303041_en-us_topic_0093946806_td6f691783cf344f2a5d66ba9d71b7fa3" frame="border" border="1" rules="all"><caption><b>Table 1 </b>Keywords</caption><thead align="left"><tr id="dli_08_0217__en-us_topic_0167303041_en-us_topic_0093946806_r2d76bd70763d404a8928220f4b186ea7"><th align="left" class="cellrowborder" valign="top" width="23.68%" id="mcps1.3.3.2.2.3.1.1"><p id="dli_08_0217__en-us_topic_0167303041_en-us_topic_0093946806_a179ef9327ac44f1fa34c44e3924e9b91"><strong id="dli_08_0217__b1376375818918">Parameter</strong></p>
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</th>
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<th align="left" class="cellrowborder" valign="top" width="76.32%" id="mcps1.3.3.2.2.3.1.2"><p id="dli_08_0217__en-us_topic_0167303041_en-us_topic_0093946806_a9e03f595a7cb429fa8d66f2743475f0d"><strong id="dli_08_0217__en-us_topic_0093946771_en-us_topic_0053447306_en-us_topic_0039551470_b6335010717346">Description</strong></p>
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</th>
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</tr>
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</thead>
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<tbody><tr id="dli_08_0217__en-us_topic_0167303041_en-us_topic_0093946806_r588c66895c4d41d8ac69a0ebef8cc058"><td class="cellrowborder" valign="top" width="23.68%" headers="mcps1.3.3.2.2.3.1.1 "><p id="dli_08_0217__en-us_topic_0167303041_en-us_topic_0093946806_ad98aed1b98714731912a1a2e13e70b29">tablename</p>
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</td>
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<td class="cellrowborder" valign="top" width="76.32%" headers="mcps1.3.3.2.2.3.1.2 "><p id="dli_08_0217__en-us_topic_0167303041_en-us_topic_0093946806_ae3effa8447324943a5b79e2571c23121">Name of the target DLI or OBS table that runs the <strong id="dli_08_0217__b1248591734715">Truncate</strong> statement.</p>
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</td>
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</tr>
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<tr id="dli_08_0217__en-us_topic_0167303041_en-us_topic_0093946806_row26579392213254"><td class="cellrowborder" valign="top" width="23.68%" headers="mcps1.3.3.2.2.3.1.1 "><p id="dli_08_0217__en-us_topic_0167303041_en-us_topic_0093946806_p5447153213254">partcol1</p>
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</td>
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<td class="cellrowborder" valign="top" width="76.32%" headers="mcps1.3.3.2.2.3.1.2 "><p id="dli_08_0217__en-us_topic_0167303041_p1592117532059">Partition name of the DLI or OBS table to be deleted.</p>
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</td>
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</tr>
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</tbody>
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</table>
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</div>
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</div>
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<div class="section" id="dli_08_0217__en-us_topic_0167303041_en-us_topic_0093946806_seb5a4a5f0f5a42769b7818ddbd12676a"><h4 class="sectiontitle">Precautions</h4><p id="dli_08_0217__en-us_topic_0167303041_p17823314103815">Only data in the DLI or OBS table can be deleted.</p>
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</div>
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<div class="section" id="dli_08_0217__en-us_topic_0167303041_en-us_topic_0093946806_sc650d4ee825647c2a760ac5fcc4ab2c8"><h4 class="sectiontitle">Example</h4><div class="codecoloring" codetype="Sql" id="dli_08_0217__en-us_topic_0167303041_screen1670916294251"><div class="highlight"><table class="highlighttable"><tr><td class="linenos"><div class="linenodiv"><pre><span class="normal">1</span></pre></div></td><td class="code"><div><pre><span></span><span class="k">truncate</span><span class="w"> </span><span class="k">table</span><span class="w"> </span><span class="n">test</span><span class="w"> </span><span class="n">PARTITION</span><span class="w"> </span><span class="p">(</span><span class="k">class</span><span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="s1">'test'</span><span class="p">);</span>
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</pre></div></td></tr></table></div>
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</div>
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</div>
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</div>
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<div>
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<div class="familylinks">
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<div class="parentlink"><strong>Parent topic:</strong> <a href="dli_08_0221.html">Spark SQL Syntax Reference</a></div>
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</div>
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</div>
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