forked from docs/doc-exports
luhuayi
177cd61a57
Reviewed-by: Pruthi, Vineet <vineet.pruthi@t-systems.com> Co-authored-by: luhuayi <luhuayi@huawei.com> Co-committed-by: luhuayi <luhuayi@huawei.com>
33 lines
4.6 KiB
HTML
33 lines
4.6 KiB
HTML
<a name="EN-US_TOPIC_0000001811515557"></a><a name="EN-US_TOPIC_0000001811515557"></a>
|
|
|
|
<h1 class="topictitle1">DROP MATERIALIZED VIEW</h1>
|
|
<div id="body0000001600303373"><div class="section" id="EN-US_TOPIC_0000001811515557__section1721331911418"><h4 class="sectiontitle">Function</h4><p id="EN-US_TOPIC_0000001811515557__abff7ed58534a4bfc98cb450b6ae74660">Deletes a materialized view. This syntax is supported only by clusters of 8.2.1.100 or later.</p>
|
|
</div>
|
|
<div class="section" id="EN-US_TOPIC_0000001811515557__section16948081356"><h4 class="sectiontitle">Precautions</h4><p id="EN-US_TOPIC_0000001811515557__p8781012554">None</p>
|
|
</div>
|
|
<div class="section" id="EN-US_TOPIC_0000001811515557__section1983194814511"><h4 class="sectiontitle">Syntax</h4><div class="codecoloring" codetype="Sql" id="EN-US_TOPIC_0000001811515557__s77e6305ad4134d1fa644de34e9d7add6"><div class="highlight"><table class="highlighttable"><tr><td class="linenos"><div class="linenodiv"><pre><span class="normal">1</span>
|
|
<span class="normal">2</span></pre></div></td><td class="code"><div><pre><span></span><span class="k">DROP</span><span class="w"> </span><span class="n">MATERIALIZED</span><span class="w"> </span><span class="k">VIEW</span><span class="w"> </span><span class="p">[</span><span class="w"> </span><span class="k">IF</span><span class="w"> </span><span class="k">EXISTS</span><span class="w"> </span><span class="p">]</span>
|
|
<span class="err">{</span><span class="p">[</span><span class="k">schema</span><span class="p">.]</span><span class="n">materialized_view_name</span><span class="err">}</span><span class="w"> </span><span class="p">[,</span><span class="w"> </span><span class="p">...]</span><span class="w"> </span><span class="p">[</span><span class="w"> </span><span class="k">CASCADE</span><span class="w"> </span><span class="o">|</span><span class="w"> </span><span class="k">RESTRICT</span><span class="w"> </span><span class="p">];</span>
|
|
</pre></div></td></tr></table></div>
|
|
</div>
|
|
</div>
|
|
<div class="section" id="EN-US_TOPIC_0000001811515557__section108651967619"><h4 class="sectiontitle">Parameter Description</h4><ul id="EN-US_TOPIC_0000001811515557__ul08919334618"><li id="EN-US_TOPIC_0000001811515557__li3896331965"><strong id="EN-US_TOPIC_0000001811515557__b147648401195">IF EXISTS</strong><p id="EN-US_TOPIC_0000001811515557__p0764940394">Sends a notice instead of an error if the specified materialized view does not exist.</p>
|
|
</li><li id="EN-US_TOPIC_0000001811515557__li932316421164"><strong id="EN-US_TOPIC_0000001811515557__b57616454616">materialized_view_name</strong><p id="EN-US_TOPIC_0000001811515557__p153334161766">Name of the materialized view to be deleted.</p>
|
|
</li><li id="EN-US_TOPIC_0000001811515557__lbf0cc66764bf496da5e8b825c85ddac0"><strong id="EN-US_TOPIC_0000001811515557__a4d156c5017614b96a48ec0e2bce7e8b0">CASCADE | RESTRICT</strong><ul id="EN-US_TOPIC_0000001811515557__u42dcc1249c74494bb0b258b1e5f32bef"><li id="EN-US_TOPIC_0000001811515557__lb98a64f0ae08492aa1ffeb59a177a1ef"><strong id="EN-US_TOPIC_0000001811515557__b1946602879103915">CASCADE</strong>: automatically deletes all objects that are contained in the schema to be deleted.</li><li id="EN-US_TOPIC_0000001811515557__led3e17d8ca6d4c2c86152540a5291341"><strong id="EN-US_TOPIC_0000001811515557__b1687427224103915">RESTRICT</strong>: refuses to delete the schema that contains any objects. This is the default.</li></ul>
|
|
</li></ul>
|
|
</div>
|
|
<div class="section" id="EN-US_TOPIC_0000001811515557__section13784810374"><h4 class="sectiontitle">Examples</h4><p id="EN-US_TOPIC_0000001811515557__p1137051210712">Delete a materialized view.</p>
|
|
<div class="codecoloring" codetype="Sql" id="EN-US_TOPIC_0000001811515557__screen8859819797"><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">DROP</span><span class="w"> </span><span class="n">MATERIALIZED</span><span class="w"> </span><span class="k">VIEW</span><span class="w"> </span><span class="n">mv1</span><span class="p">;</span>
|
|
</pre></div></td></tr></table></div>
|
|
</div>
|
|
</div>
|
|
<div class="section" id="EN-US_TOPIC_0000001811515557__section78621412121712"><h4 class="sectiontitle">Helpful Links</h4><p id="EN-US_TOPIC_0000001811515557__p37654154173"><a href="dws_06_0358.html">ALTER MATERIALIZED VIEW</a>, <a href="dws_06_0357.html">CREATE MATERIALIZED VIEW</a>, <a href="dws_06_0361.html">REFRESH MATERIALIZED VIEW</a></p>
|
|
</div>
|
|
</div>
|
|
<div>
|
|
<div class="familylinks">
|
|
<div class="parentlink"><strong>Parent topic:</strong> <a href="dws_06_0118.html">DDL Syntax</a></div>
|
|
</div>
|
|
</div>
|
|
|