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Yang, Tong
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Reviewed-by: Hasko, Vladimir <vladimir.hasko@t-systems.com> Co-authored-by: Yang, Tong <yangtong2@huawei.com> Co-committed-by: Yang, Tong <yangtong2@huawei.com>
20 lines
2.4 KiB
HTML
20 lines
2.4 KiB
HTML
<a name="mrs_01_0389"></a><a name="mrs_01_0389"></a>
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<h1 class="topictitle1">Deleting a CarbonData Table</h1>
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<div id="body1589421630484"><div class="section" id="mrs_01_0389__s867958339e0b4fdfaacc7000eb0377e3"><h4 class="sectiontitle">Scenario</h4><p id="mrs_01_0389__a809f0b362faf4024b178073bdbc41ddf">Unused CarbonData tables can be deleted. After a CarbonData table is deleted, its metadata and loaded data are deleted together.</p>
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</div>
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<div class="section" id="mrs_01_0389__s21b9a4ba55a54f5d9fc9bac6e5a18856"><h4 class="sectiontitle">Procedure</h4><ol id="mrs_01_0389__of5c06ec6a6a94521b5c5359f69f3ab53"><li id="mrs_01_0389__l7df72879eae94538b08226acc68870aa"><span>Run the following command to delete a CarbonData table:</span><p><p id="mrs_01_0389__aa37e9bdbca464994b871793cae24fe33"><strong id="mrs_01_0389__a84b5ec1aaf6d44f7815cabd9188179e8">DROP TABLE <em id="mrs_01_0389__a180a9e4d4b154c698b747c1f4f9d8a6a">[IF EXISTS] [db_name.]table_name</em>;</strong></p>
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<p id="mrs_01_0389__aaae66cbb766a4034ba03fbfc4eb8d33e"><span class="parmname" id="mrs_01_0389__pe690fac6cbfd48038ecd57504a282960"><b>db_name</b></span> is optional. If <span class="parmname" id="mrs_01_0389__parmname69782734610833"><b>db_name</b></span> is not specified, the table named <span class="parmname" id="mrs_01_0389__parmname6040973110833"><b>table_name</b></span> in the current database is deleted.</p>
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<p id="mrs_01_0389__aa64686ef0701483a9ff2abcacd07a525">For example, run the following command to delete the <span class="parmname" id="mrs_01_0389__en-us_topic_0056202765_parmname142026181153922"><b>productSalesTable</b></span> table in the <span class="parmname" id="mrs_01_0389__en-us_topic_0056202765_parmname160513163153927"><b>productdb</b></span> database:</p>
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<p id="mrs_01_0389__ad140032bf8e24b35a4213dd47ecb9491"><strong id="mrs_01_0389__adebe7a22ca65497d88e4340a2ba74551">DROP TABLE productdb.productSalesTable;</strong></p>
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</p></li><li id="mrs_01_0389__l048e0985e0894fd895220863b34ae80e"><span>Run the following command to confirm that the table is deleted:</span><p><p id="mrs_01_0389__a5e28271d6b484c559e8497e9f3b73452"><strong id="mrs_01_0389__en-us_topic_0056202765_b23950417294">SHOW TABLES;</strong></p>
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</p></li></ol>
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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="mrs_01_0385.html">Using CarbonData (for Versions Earlier Than MRS 3.x)</a></div>
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</div>
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</div>
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