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Lu, Huayi e6fa411af0 DWS DEV 830.201 version 
Reviewed-by: Pruthi, Vineet <vineet.pruthi@t-systems.com>
Co-authored-by: Lu, Huayi <luhuayi@huawei.com>
Co-committed-by: Lu, Huayi <luhuayi@huawei.com>
2024-05-16 07:24:04 +00:00

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<a name="EN-US_TOPIC_0000001233708649"></a><a name="EN-US_TOPIC_0000001233708649"></a>
<h1 class="topictitle1">SELECT INTO</h1>
<div id="body8662426"><div class="section" id="EN-US_TOPIC_0000001233708649__s383c7b2749704fb0a89dd5bc5d4c96e7"><h4 class="sectiontitle">Function</h4><p id="EN-US_TOPIC_0000001233708649__p45701942134918"><strong id="EN-US_TOPIC_0000001233708649__b842352706191111">SELECT INTO</strong> defines a new table based on a query result and insert data obtained by query to the new table.</p>
<p id="EN-US_TOPIC_0000001233708649__a7c47f9514553454db0e748708d72b5c8">Different from <strong id="EN-US_TOPIC_0000001233708649__b842352706191222">SELECT</strong>, data found by <strong id="EN-US_TOPIC_0000001233708649__b842352706191242">SELECT INTO</strong> is not returned to the client. The table columns have the same names and data types as the output columns of the <strong id="EN-US_TOPIC_0000001233708649__b842352706164615">SELECT</strong>.</p>
</div>
<div class="section" id="EN-US_TOPIC_0000001233708649__s7cec285d7bc648919a6c1d7803bd3511"><h4 class="sectiontitle">Precautions</h4><p id="EN-US_TOPIC_0000001233708649__afc5833b1183845f0ba3f936d976971a4"><strong id="EN-US_TOPIC_0000001233708649__b84235270619147">CREATE TABLE AS</strong> provides functions similar to <strong id="EN-US_TOPIC_0000001233708649__b842352706191426">SELECT INTO</strong> in functions and provides a superset of functions provided by <strong id="EN-US_TOPIC_0000001233708649__b842352706191622">SELECT INTO</strong>. You are advised to replace <strong id="EN-US_TOPIC_0000001233708649__b6391927141813">SELECT INTO</strong> with <strong id="EN-US_TOPIC_0000001233708649__b1244053001818">CREATE TABLE AS</strong> because <strong id="EN-US_TOPIC_0000001233708649__b158901333101814">SELECT INTO</strong> cannot be used in stored procedures and <strong id="EN-US_TOPIC_0000001233708649__b515325672016">SELECT INTO</strong> (<em id="EN-US_TOPIC_0000001233708649__i19318219816">column</em>) cannot receive blank lines.</p>
</div>
<div class="section" id="EN-US_TOPIC_0000001233708649__sc9e6f2f9a6e748cabedc365e1db6fa4e"><h4 class="sectiontitle">Syntax</h4><div class="codecoloring" codetype="Sql" id="EN-US_TOPIC_0000001233708649__sbb5c21f891894ad5be64506664cf584f"><div class="highlight"><table class="highlighttable"><tr><td class="linenos"><div class="linenodiv"><pre><span class="normal"> 1</span>
<span class="normal"> 2</span>
<span class="normal"> 3</span>
<span class="normal"> 4</span>
<span class="normal"> 5</span>
<span class="normal"> 6</span>
<span class="normal"> 7</span>
<span class="normal"> 8</span>
<span class="normal"> 9</span>
<span class="normal">10</span>
<span class="normal">11</span>
<span class="normal">12</span>
<span class="normal">13</span>
<span class="normal">14</span></pre></div></td><td class="code"><div><pre><span></span><span class="p">[</span><span class="w"> </span><span class="k">WITH</span><span class="w"> </span><span class="p">[</span><span class="w"> </span><span class="k">RECURSIVE</span><span class="w"> </span><span class="p">]</span><span class="w"> </span><span class="n">with_query</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="k">SELECT</span><span class="w"> </span><span class="p">[</span><span class="w"> </span><span class="k">ALL</span><span class="w"> </span><span class="o">|</span><span class="w"> </span><span class="k">DISTINCT</span><span class="w"> </span><span class="p">[</span><span class="w"> </span><span class="k">ON</span><span class="w"> </span><span class="p">(</span><span class="w"> </span><span class="n">expression</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="p">]</span><span class="w"> </span><span class="p">]</span>
<span class="w"> </span><span class="err">{</span><span class="w"> </span><span class="o">*</span><span class="w"> </span><span class="o">|</span><span class="w"> </span><span class="err">{</span><span class="n">expression</span><span class="w"> </span><span class="p">[</span><span class="w"> </span><span class="p">[</span><span class="w"> </span><span class="k">AS</span><span class="w"> </span><span class="p">]</span><span class="w"> </span><span class="n">output_name</span><span class="w"> </span><span class="p">]</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="err">}</span>
<span class="w"> </span><span class="k">INTO</span><span class="w"> </span><span class="p">[</span><span class="w"> </span><span class="n">UNLOGGED</span><span class="w"> </span><span class="p">]</span><span class="w"> </span><span class="p">[</span><span class="w"> </span><span class="k">TABLE</span><span class="w"> </span><span class="p">]</span><span class="w"> </span><span class="n">new_table</span>
<span class="w"> </span><span class="p">[</span><span class="w"> </span><span class="k">FROM</span><span class="w"> </span><span class="n">from_item</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="p">[</span><span class="w"> </span><span class="k">WHERE</span><span class="w"> </span><span class="n">condition</span><span class="w"> </span><span class="p">]</span>
<span class="w"> </span><span class="p">[</span><span class="w"> </span><span class="k">GROUP</span><span class="w"> </span><span class="k">BY</span><span class="w"> </span><span class="n">expression</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="p">[</span><span class="w"> </span><span class="k">HAVING</span><span class="w"> </span><span class="n">condition</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="p">[</span><span class="w"> </span><span class="n">WINDOW</span><span class="w"> </span><span class="err">{</span><span class="n">window_name</span><span class="w"> </span><span class="k">AS</span><span class="w"> </span><span class="p">(</span><span class="w"> </span><span class="n">window_definition</span><span class="w"> </span><span class="p">)</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="p">[</span><span class="w"> </span><span class="err">{</span><span class="w"> </span><span class="k">UNION</span><span class="w"> </span><span class="o">|</span><span class="w"> </span><span class="k">INTERSECT</span><span class="w"> </span><span class="o">|</span><span class="w"> </span><span class="k">EXCEPT</span><span class="w"> </span><span class="o">|</span><span class="w"> </span><span class="n">MINUS</span><span class="w"> </span><span class="err">}</span><span class="w"> </span><span class="p">[</span><span class="w"> </span><span class="k">ALL</span><span class="w"> </span><span class="o">|</span><span class="w"> </span><span class="k">DISTINCT</span><span class="w"> </span><span class="p">]</span><span class="w"> </span><span class="k">select</span><span class="w"> </span><span class="p">]</span>
<span class="w"> </span><span class="p">[</span><span class="w"> </span><span class="k">ORDER</span><span class="w"> </span><span class="k">BY</span><span class="w"> </span><span class="err">{</span><span class="n">expression</span><span class="w"> </span><span class="p">[</span><span class="w"> </span><span class="p">[</span><span class="w"> </span><span class="k">ASC</span><span class="w"> </span><span class="o">|</span><span class="w"> </span><span class="k">DESC</span><span class="w"> </span><span class="o">|</span><span class="w"> </span><span class="k">USING</span><span class="w"> </span><span class="k">operator</span><span class="w"> </span><span class="p">]</span><span class="w"> </span><span class="o">|</span><span class="w"> </span><span class="n">nlssort_expression_clause</span><span class="w"> </span><span class="p">]</span><span class="w"> </span><span class="p">[</span><span class="w"> </span><span class="n">NULLS</span><span class="w"> </span><span class="err">{</span><span class="w"> </span><span class="k">FIRST</span><span class="w"> </span><span class="o">|</span><span class="w"> </span><span class="k">LAST</span><span class="w"> </span><span class="err">}</span><span class="w"> </span><span class="p">]</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="p">[</span><span class="w"> </span><span class="err">{</span><span class="w"> </span><span class="p">[</span><span class="w"> </span><span class="k">LIMIT</span><span class="w"> </span><span class="err">{</span><span class="w"> </span><span class="k">count</span><span class="w"> </span><span class="o">|</span><span class="w"> </span><span class="k">ALL</span><span class="w"> </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="k">OFFSET</span><span class="w"> </span><span class="k">start</span><span class="w"> </span><span class="p">[</span><span class="w"> </span><span class="k">ROW</span><span class="w"> </span><span class="o">|</span><span class="w"> </span><span class="k">ROWS</span><span class="w"> </span><span class="p">]</span><span class="w"> </span><span class="p">]</span><span class="w"> </span><span class="err">}</span><span class="w"> </span><span class="o">|</span><span class="w"> </span><span class="err">{</span><span class="w"> </span><span class="k">LIMIT</span><span class="w"> </span><span class="k">start</span><span class="p">,</span><span class="w"> </span><span class="err">{</span><span class="w"> </span><span class="k">count</span><span class="w"> </span><span class="o">|</span><span class="w"> </span><span class="k">ALL</span><span class="w"> </span><span class="err">}</span><span class="w"> </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="k">FETCH</span><span class="w"> </span><span class="err">{</span><span class="w"> </span><span class="k">FIRST</span><span class="w"> </span><span class="o">|</span><span class="w"> </span><span class="k">NEXT</span><span class="w"> </span><span class="err">}</span><span class="w"> </span><span class="p">[</span><span class="w"> </span><span class="k">count</span><span class="w"> </span><span class="p">]</span><span class="w"> </span><span class="err">{</span><span class="w"> </span><span class="k">ROW</span><span class="w"> </span><span class="o">|</span><span class="w"> </span><span class="k">ROWS</span><span class="w"> </span><span class="err">}</span><span class="w"> </span><span class="k">ONLY</span><span class="w"> </span><span class="p">]</span>
<span class="w"> </span><span class="p">[</span><span class="w"> </span><span class="err">{</span><span class="k">FOR</span><span class="w"> </span><span class="err">{</span><span class="w"> </span><span class="k">UPDATE</span><span class="w"> </span><span class="o">|</span><span class="w"> </span><span class="k">SHARE</span><span class="w"> </span><span class="err">}</span><span class="w"> </span><span class="p">[</span><span class="w"> </span><span class="k">OF</span><span class="w"> </span><span class="k">table_name</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="p">[</span><span class="w"> </span><span class="n">NOWAIT</span><span class="w"> </span><span class="p">]</span><span class="err">}</span><span class="w"> </span><span class="p">[...]</span><span class="w"> </span><span class="p">];</span>
</pre></div></td></tr></table></div>
</div>
</div>
<div class="section" id="EN-US_TOPIC_0000001233708649__s343862a6800e4310a7ab7c5190923ea4"><h4 class="sectiontitle">Parameter Description</h4><p id="EN-US_TOPIC_0000001233708649__ac5cb974d8db6496583c4773a94d4c1d2"><strong id="EN-US_TOPIC_0000001233708649__aece26e9e0f1d475abeea2efe0f167293">INTO [ UNLOGGED ] [ TABLE ] new_table</strong></p>
<p id="EN-US_TOPIC_0000001233708649__a2f03c18031b7472ea2aaa44206fbe59a"><strong id="EN-US_TOPIC_0000001233708649__b842352706191330">UNLOGGED</strong> indicates that the table is created as an unlogged table. Data written to unlogged tables is not written to the write-ahead log, which makes them considerably faster than ordinary tables. However, they are not crash-safe: an unlogged table is automatically truncated after a crash or unclean shutdown. The contents of an unlogged table are also not replicated to standby servers. Any indexes created on an unlogged table are automatically unlogged as well.</p>
<p id="EN-US_TOPIC_0000001233708649__a09d050b20b3b4dc5a9b836ae51f246ba"><strong id="EN-US_TOPIC_0000001233708649__en-us_topic_0085032994_b84235270619836">new_table</strong> specifies the name of the new table.</p>
<div class="note" id="EN-US_TOPIC_0000001233708649__na76072f5901741579d0f6c7b352fc422"><img src="public_sys-resources/note_3.0-en-us.png"><span class="notetitle"> </span><div class="notebody"><p id="EN-US_TOPIC_0000001233708649__a3e6635a60d42444895d624f9f56a4e53">For details about other <strong id="EN-US_TOPIC_0000001233708649__en-us_topic_0085032994_en-us_topic_0058965571_b84235270619857">SELECT INTO</strong> parameters, see <a href="dws_06_0238.html#EN-US_TOPIC_0000001188270504__s3d562432879c4244bcdbfdf9f30bcc5e">Parameter Description</a> in <strong id="EN-US_TOPIC_0000001233708649__en-us_topic_0085032994_en-us_topic_0058965571_b8423527061996">SELECT</strong>.</p>
</div></div>
</div>
<div class="section" id="EN-US_TOPIC_0000001233708649__s3db56d6cd93e46dbbc659e2b38c664c8"><h4 class="sectiontitle">Example</h4><p id="EN-US_TOPIC_0000001233708649__p12814444182618">Add values whose <strong id="EN-US_TOPIC_0000001233708649__b184533243388">TABLE_SK</strong> is less than 3 in the <strong id="EN-US_TOPIC_0000001233708649__b5244112963817">reason_t</strong> table to the new table.</p>
<div class="codecoloring" codetype="Sql" id="EN-US_TOPIC_0000001233708649__screen4187635161614"><div class="highlight"><table class="highlighttable"><tr><td class="linenos"><div class="linenodiv"><pre><span class="normal">1</span>
<span class="normal">2</span>
<span class="normal">3</span>
<span class="normal">4</span>
<span class="normal">5</span>
<span class="normal">6</span>
<span class="normal">7</span>
<span class="normal">8</span>
<span class="normal">9</span></pre></div></td><td class="code"><div><pre><span></span><span class="k">CREATE</span><span class="w"> </span><span class="k">TABLE</span><span class="w"> </span><span class="k">IF</span><span class="w"> </span><span class="k">NOT</span><span class="w"> </span><span class="k">EXISTS</span><span class="w"> </span><span class="n">reason_t</span>
<span class="p">(</span>
<span class="w"> </span><span class="n">TABLE_SK</span><span class="w"> </span><span class="nb">INTEGER</span><span class="w"> </span><span class="p">,</span>
<span class="w"> </span><span class="n">TABLE_ID</span><span class="w"> </span><span class="nb">VARCHAR</span><span class="p">(</span><span class="mi">20</span><span class="p">)</span><span class="w"> </span><span class="p">,</span>
<span class="w"> </span><span class="n">TABLE_NA</span><span class="w"> </span><span class="nb">VARCHAR</span><span class="p">(</span><span class="mi">20</span><span class="p">)</span>
<span class="p">);</span>
<span class="k">INSERT</span><span class="w"> </span><span class="k">INTO</span><span class="w"> </span><span class="n">reason_t</span><span class="w"> </span><span class="k">VALUES</span><span class="w"> </span><span class="p">(</span><span class="mi">1</span><span class="p">,</span><span class="w"> </span><span class="s1">'S01'</span><span class="p">,</span><span class="w"> </span><span class="s1">'StudentA'</span><span class="p">),(</span><span class="mi">2</span><span class="p">,</span><span class="w"> </span><span class="s1">'T01'</span><span class="p">,</span><span class="w"> </span><span class="s1">'TeacherA'</span><span class="p">),(</span><span class="mi">3</span><span class="p">,</span><span class="w"> </span><span class="s1">'T02'</span><span class="p">,</span><span class="w"> </span><span class="s1">'TeacherB'</span><span class="p">),(</span><span class="mi">3</span><span class="p">,</span><span class="w"> </span><span class="s1">'S02'</span><span class="p">,</span><span class="w"> </span><span class="s1">'StudentB'</span><span class="p">);</span>
<span class="k">SELECT</span><span class="w"> </span><span class="o">*</span><span class="w"> </span><span class="k">INTO</span><span class="w"> </span><span class="n">reason_t_bck</span><span class="w"> </span><span class="k">FROM</span><span class="w"> </span><span class="n">reason_t</span><span class="w"> </span><span class="k">WHERE</span><span class="w"> </span><span class="n">TABLE_SK</span><span class="w"> </span><span class="o">&lt;</span><span class="w"> </span><span class="mi">3</span><span class="p">;</span>
</pre></div></td></tr></table></div>
</div>
</div>
<div class="section" id="EN-US_TOPIC_0000001233708649__s329cf066e8fe4d75b8e79ecb03a674b4"><h4 class="sectiontitle">Helpful Links</h4><p id="EN-US_TOPIC_0000001233708649__ad0adb2cbb5b1452fa705eec4917a7cf3"><a href="dws_06_0238.html">SELECT</a></p>
</div>
</div>
<div>
<div class="familylinks">
<div class="parentlink"><strong>Parent topic:</strong> <a href="dws_06_0277.html">DQL Syntax</a></div>
</div>
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