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doc-exports/docs/dws/tool/dws_16_0116.html
luhuayi a5e3903f6b DWS TG 910.211 version 
Reviewed-by: Pruthi, Vineet <vineet.pruthi@t-systems.com>
Co-authored-by: luhuayi <luhuayi@huawei.com>
Co-committed-by: luhuayi <luhuayi@huawei.com>
2025-04-23 13:53:01 +00:00

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<a name="EN-US_TOPIC_0000001813439240"></a><a name="EN-US_TOPIC_0000001813439240"></a>
<h1 class="topictitle1">JSON Types</h1>
<div id="body8662426"><div class="section" id="EN-US_TOPIC_0000001813439240__en-us_topic_0000001397115256_section1639314358205"><h4 class="sectiontitle">Overview</h4><p id="EN-US_TOPIC_0000001813439240__en-us_topic_0000001397115256_p04718426201">The JSON data type can be used to store JavaScript Object Notation (JSON) data. DSC supports the following type conversions:</p>
</div>
<div class="section" id="EN-US_TOPIC_0000001813439240__en-us_topic_0000001397115256_section89141635183114"><h4 class="sectiontitle">Type Mapping</h4><p id="EN-US_TOPIC_0000001813439240__en-us_topic_0000001397115256_en-us_topic_0214164703_p8060118"><strong id="EN-US_TOPIC_0000001813439240__en-us_topic_0000001397115256_en-us_topic_0214164703_b9136102519199">Input Example (JSON)</strong></p>
<div class="codecoloring" codetype="Sql" id="EN-US_TOPIC_0000001813439240__en-us_topic_0000001397115256_en-us_topic_0214164703_screen17940112818193"><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></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="o">`</span><span class="n">runoob_dataType_test</span><span class="o">`</span><span class="p">(</span>
<span class="w"> </span><span class="o">`</span><span class="n">dataType_1</span><span class="o">`</span><span class="w"> </span><span class="nb">INT</span><span class="p">,</span>
<span class="w"> </span><span class="o">`</span><span class="n">dataType_2</span><span class="o">`</span><span class="w"> </span><span class="nb">VARCHAR</span><span class="p">,</span>
<span class="w"> </span><span class="o">`</span><span class="n">dataType_3</span><span class="o">`</span><span class="w"> </span><span class="n">JSON</span>
<span class="p">);</span>
<span class="k">ALTER</span><span class="w"> </span><span class="k">TABLE</span><span class="w"> </span><span class="o">`</span><span class="n">runoob_dataType_test</span><span class="o">`</span><span class="w"> </span><span class="k">ADD</span><span class="w"> </span><span class="k">COLUMN</span><span class="w"> </span><span class="o">`</span><span class="n">dataType_4</span><span class="o">`</span><span class="w"> </span><span class="n">JSON</span><span class="w"> </span><span class="k">NOT</span><span class="w"> </span><span class="k">NULL</span><span class="p">;</span>
<span class="k">ALTER</span><span class="w"> </span><span class="k">TABLE</span><span class="w"> </span><span class="o">`</span><span class="n">runoob_dataType_test</span><span class="o">`</span><span class="w"> </span><span class="n">CHANGE</span><span class="w"> </span><span class="k">COLUMN</span><span class="w"> </span><span class="o">`</span><span class="n">dataType_4</span><span class="o">`</span><span class="w"> </span><span class="o">`</span><span class="n">dataType_5</span><span class="o">`</span><span class="w"> </span><span class="n">JSON</span><span class="w"> </span><span class="k">NOT</span><span class="w"> </span><span class="k">NULL</span><span class="p">;</span>
</pre></div></td></tr></table></div>
</div>
<p id="EN-US_TOPIC_0000001813439240__en-us_topic_0000001397115256_en-us_topic_0214164703_p837154111192"><strong id="EN-US_TOPIC_0000001813439240__en-us_topic_0000001397115256_en-us_topic_0214164703_b28071508198">Output</strong></p>
<div class="codecoloring" codetype="Sql" id="EN-US_TOPIC_0000001813439240__en-us_topic_0000001397115256_en-us_topic_0214164703_screen151561253121913"><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>
<span class="normal">15</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="ss">&quot;public&quot;</span><span class="p">.</span><span class="ss">&quot;runoob_datatype_test&quot;</span>
<span class="p">(</span>
<span class="w"> </span><span class="ss">&quot;datatype_1&quot;</span><span class="w"> </span><span class="nb">INTEGER</span><span class="p">,</span>
<span class="w"> </span><span class="ss">&quot;datatype_2&quot;</span><span class="w"> </span><span class="nb">VARCHAR</span><span class="p">,</span>
<span class="w"> </span><span class="ss">&quot;datatype_3&quot;</span><span class="w"> </span><span class="n">JSONB</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="n">ORIENTATION</span><span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="k">ROW</span><span class="p">,</span><span class="w"> </span><span class="n">COMPRESSION</span><span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="k">NO</span><span class="w"> </span><span class="p">)</span>
<span class="w"> </span><span class="n">NOCOMPRESS</span>
<span class="w"> </span><span class="n">DISTRIBUTE</span><span class="w"> </span><span class="k">BY</span><span class="w"> </span><span class="n">HASH</span><span class="w"> </span><span class="p">(</span><span class="ss">&quot;datatype_1&quot;</span><span class="p">);</span>
<span class="k">ALTER</span><span class="w"> </span><span class="k">TABLE</span>
<span class="w"> </span><span class="ss">&quot;public&quot;</span><span class="p">.</span><span class="ss">&quot;runoob_datatype_test&quot;</span>
<span class="k">ADD</span>
<span class="w"> </span><span class="k">COLUMN</span><span class="w"> </span><span class="ss">&quot;datatype_4&quot;</span><span class="w"> </span><span class="n">JSONB</span><span class="p">;</span>
<span class="k">ALTER</span><span class="w"> </span><span class="k">TABLE</span>
<span class="w"> </span><span class="ss">&quot;public&quot;</span><span class="p">.</span><span class="ss">&quot;runoob_datatype_test&quot;</span><span class="w"> </span><span class="n">CHANGE</span><span class="w"> </span><span class="k">COLUMN</span><span class="w"> </span><span class="ss">&quot;datatype_4&quot;</span><span class="w"> </span><span class="ss">&quot;datatype_5&quot;</span><span class="w"> </span><span class="n">JSONB</span><span class="p">;</span>
</pre></div></td></tr></table></div>
</div>
</div>
</div>
<div>
<div class="familylinks">
<div class="parentlink"><strong>Parent topic:</strong> <a href="dws_16_0106.html">Data Types</a></div>
</div>
</div>
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