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doc-exports/docs/dws/dev/dws_04_0194.html
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_0000001188323596"></a><a name="EN-US_TOPIC_0000001188323596"></a>
<h1 class="topictitle1">Creating a GDS Foreign Table</h1>
<div id="body8662426"><p id="EN-US_TOPIC_0000001188323596__p10446173916377">The source data information and GDS access information are configured in a foreign table. Then, <span id="EN-US_TOPIC_0000001188323596__text1350731442">GaussDB(DWS)</span> can import data from a data server to a database table based on the configuration in the foreign table.</p>
<div class="section" id="EN-US_TOPIC_0000001188323596__s1f7c2ac04c314a57960b6b6691839bfb"><h4 class="sectiontitle">Procedure</h4><ol id="EN-US_TOPIC_0000001188323596__obe5d0e5a064d4d1aae7e8caeeaeff6cc"><li id="EN-US_TOPIC_0000001188323596__li175507108553"><a name="EN-US_TOPIC_0000001188323596__li175507108553"></a><a name="li175507108553"></a><span>Collect source data information and GDS access information.</span><p><p id="EN-US_TOPIC_0000001188323596__p18344328550">You need to collect the following source data information:</p>
<ul id="EN-US_TOPIC_0000001188323596__ul4423648711133"><li id="EN-US_TOPIC_0000001188323596__li5025677611130"><strong id="EN-US_TOPIC_0000001188323596__b635249141518">format</strong>: format of the data to be imported. Only data in CSV, TEXT, or FIXED format can be imported using GDS in parallel.</li><li id="EN-US_TOPIC_0000001188323596__li187203511121"><strong id="EN-US_TOPIC_0000001188323596__b19312132213177">header</strong>: whether a source data file has a header. This parameter is set only for files in CSV or FIXED format.</li><li id="EN-US_TOPIC_0000001188323596__li3810485511321"><strong id="EN-US_TOPIC_0000001188323596__b1944212532012">delimiter</strong>: delimiter in the source data file. For example, it can be a comma (,).</li><li id="EN-US_TOPIC_0000001188323596__li2543368511530"><strong id="EN-US_TOPIC_0000001188323596__b10804131882416">encoding</strong>: encoding format of the data source file. Assume that the encoding format is UTF-8.</li><li id="EN-US_TOPIC_0000001188323596__li19862125243511"><strong id="EN-US_TOPIC_0000001188323596__b8740206024">eol</strong>: line break character in the data file. It can be a default character, such as 0x0D0A or 0X0A, or a customized line break character, such as a string: <strong id="EN-US_TOPIC_0000001188323596__b176921344813">!@#</strong>. This parameter can be set only for TEXT import.</li><li id="EN-US_TOPIC_0000001188323596__li7278527194912">For details about more source data information configured in a foreign table, see data format parameters.</li></ul>
<p id="EN-US_TOPIC_0000001188323596__p06911724175615">You need to collect the following GDS access information:</p>
<p id="EN-US_TOPIC_0000001188323596__p1411517101575"><strong id="EN-US_TOPIC_0000001188323596__b28431139152919">location</strong>: GDS URL. GDS information in <a href="dws_04_0193.html">Installing, Configuring, and Starting GDS</a> is used as an example. In non-SSL mode, <strong id="EN-US_TOPIC_0000001188323596__b3726135572913">location</strong> is set to <strong id="EN-US_TOPIC_0000001188323596__b1277119410813">gsfs</strong>://<em id="EN-US_TOPIC_0000001188323596__i8927101018810">192.168.0.90:5000</em>/<em id="EN-US_TOPIC_0000001188323596__i6544133105417">/input_data/</em>. In SSL mode, <strong id="EN-US_TOPIC_0000001188323596__b833394783012">location</strong> is set to <strong id="EN-US_TOPIC_0000001188323596__b952201511815">gsfss</strong>://<em id="EN-US_TOPIC_0000001188323596__i549010199814">192.168.0.90:5000</em>/<em id="EN-US_TOPIC_0000001188323596__i1025121917105">/input_data/</em>. <strong id="EN-US_TOPIC_0000001188323596__b19764201314270">192.168.0.90:5000</strong> indicates the IP address and port number of GDS. <strong id="EN-US_TOPIC_0000001188323596__b1676421362711">input_data</strong> indicates the path of data source files managed by GDS. Replace the values as required.</p>
</p></li><li id="EN-US_TOPIC_0000001188323596__la571bf23a4b24288b5dce0d83a176a56"><a name="EN-US_TOPIC_0000001188323596__la571bf23a4b24288b5dce0d83a176a56"></a><a name="la571bf23a4b24288b5dce0d83a176a56"></a><span>Design an error tolerance mechanism for data import.</span><p><div class="p" id="EN-US_TOPIC_0000001188323596__p67061333159"><span id="EN-US_TOPIC_0000001188323596__text735487542">GaussDB(DWS)</span> supports the following error tolerance in data import:<ul id="EN-US_TOPIC_0000001188323596__ul11629532354"><li id="EN-US_TOPIC_0000001188323596__li86291732056"><strong id="EN-US_TOPIC_0000001188323596__en-us_topic_0000001233883299_en-us_topic_0000001145491115_b139023071615">fill_missing_fields</strong>: When the last column in a row of the source data file is empty, this parameter specifies whether to report an error or set this field in the row to <strong id="EN-US_TOPIC_0000001188323596__en-us_topic_0000001233883299_en-us_topic_0000001145491115_b5911304164">NULL</strong>.<div class="note" id="EN-US_TOPIC_0000001188323596__en-us_topic_0000001233883299_note1919115384716"><img src="public_sys-resources/note_3.0-en-us.png"><span class="notetitle"> </span><div class="notebody"><div class="p" id="EN-US_TOPIC_0000001188323596__en-us_topic_0000001233883299_p82518281402">Valid value: <strong id="EN-US_TOPIC_0000001188323596__en-us_topic_0000001233883299_b209483794242114">true</strong>, <strong id="EN-US_TOPIC_0000001188323596__en-us_topic_0000001233883299_b172612546842114">on</strong>, <strong id="EN-US_TOPIC_0000001188323596__en-us_topic_0000001233883299_b76188217842114">false</strong>, and <strong id="EN-US_TOPIC_0000001188323596__en-us_topic_0000001233883299_b1083141342114">off</strong>.<ul id="EN-US_TOPIC_0000001188323596__en-us_topic_0000001233883299_ul225828184019"><li id="EN-US_TOPIC_0000001188323596__en-us_topic_0000001233883299_li9261428174015">If this parameter is set to <strong id="EN-US_TOPIC_0000001188323596__en-us_topic_0000001233883299_b99689151742114">true</strong> or <strong id="EN-US_TOPIC_0000001188323596__en-us_topic_0000001233883299_b139215600942114">on</strong> and the last column of a data row in a source data file is lost, the column will be replaced with <strong id="EN-US_TOPIC_0000001188323596__en-us_topic_0000001233883299_b94178561842114">null</strong> and no error message will be generated.</li><li id="EN-US_TOPIC_0000001188323596__en-us_topic_0000001233883299_li726428104012">If this parameter is set to <strong id="EN-US_TOPIC_0000001188323596__en-us_topic_0000001233883299_b86902910542114">false</strong> or <strong id="EN-US_TOPIC_0000001188323596__en-us_topic_0000001233883299_b165061400542114">off</strong> and the last column of a data row in a source data file is lost, the following error information will be displayed:<pre class="screen" id="EN-US_TOPIC_0000001188323596__en-us_topic_0000001233883299_screen1261228104018">missing data for column "tt"</pre>
</li></ul>
</div>
<p id="EN-US_TOPIC_0000001188323596__en-us_topic_0000001233883299_p16881120304">Default value: <strong id="EN-US_TOPIC_0000001188323596__en-us_topic_0000001233883299_b141757217142114">false</strong> or <strong id="EN-US_TOPIC_0000001188323596__en-us_topic_0000001233883299_b29146414142114">off</strong></p>
</div></div>
</li><li id="EN-US_TOPIC_0000001188323596__li36291632355"><strong id="EN-US_TOPIC_0000001188323596__en-us_topic_0000001233883299_en-us_topic_0000001145491115_b191441935131616">ignore_extra_data</strong>: When the number of columns in the source data file is greater than that specified in the foreign table, this parameter specifies whether to report an error or ignore the extra columns.<div class="note" id="EN-US_TOPIC_0000001188323596__en-us_topic_0000001233883299_note36611215175119"><img src="public_sys-resources/note_3.0-en-us.png"><span class="notetitle"> </span><div class="notebody"><p id="EN-US_TOPIC_0000001188323596__en-us_topic_0000001233883299_a4c72f9b91db2424fb27a019d0837230f">Value range: true/on, false/off.</p>
<ul id="EN-US_TOPIC_0000001188323596__en-us_topic_0000001233883299_ue6e29025b10c422095a237b432fc4cf3"><li id="EN-US_TOPIC_0000001188323596__en-us_topic_0000001233883299_l36e57a78c3da40c59954752a643249c7">When this parameter is <strong id="EN-US_TOPIC_0000001188323596__en-us_topic_0000001233883299_b162313731142114">true</strong> or <strong id="EN-US_TOPIC_0000001188323596__en-us_topic_0000001233883299_b123666753742114">on</strong> and the number of data source files exceeds the number of foreign table columns, excessive columns will be ignored.</li><li id="EN-US_TOPIC_0000001188323596__en-us_topic_0000001233883299_l8355b1f38ae04a0683915bbc4f299cb8">If the parameter is set to <strong id="EN-US_TOPIC_0000001188323596__en-us_topic_0000001233883299_b17564896042114">false</strong> or <strong id="EN-US_TOPIC_0000001188323596__en-us_topic_0000001233883299_b19293065642114">off</strong>, and the number of data source files exceeds the number of foreign table columns, the following error information will be displayed:<div class="codecoloring" codetype="Sql" id="EN-US_TOPIC_0000001188323596__en-us_topic_0000001233883299_s44c38a5e9f2c420d979a3dc0fcac95b0"><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="n">extra</span><span class="w"> </span><span class="k">data</span><span class="w"> </span><span class="k">after</span><span class="w"> </span><span class="k">last</span><span class="w"> </span><span class="n">expected</span><span class="w"> </span><span class="k">column</span>
</pre></div></td></tr></table></div>
</div>
</li></ul>
<p id="EN-US_TOPIC_0000001188323596__en-us_topic_0000001233883299_a94b2e3330dc846ea84e63e03262a8b16">Default value: <strong id="EN-US_TOPIC_0000001188323596__en-us_topic_0000001233883299_b92758663542114">false</strong> or <strong id="EN-US_TOPIC_0000001188323596__en-us_topic_0000001233883299_b171831833242114">off</strong></p>
</div></div>
</li><li id="EN-US_TOPIC_0000001188323596__li862913322057"><strong id="EN-US_TOPIC_0000001188323596__b1484374514387">per node reject_limit</strong>: This parameter specifies the number of data format errors allowed on each DN. If the number of errors recorded in the error table on a DN exceeds the specified value, the import will fail and an error message will be reported. You can also set it to <strong id="EN-US_TOPIC_0000001188323596__b10631342514">unlimited</strong>.</li><li id="EN-US_TOPIC_0000001188323596__li76292321855"><strong id="EN-US_TOPIC_0000001188323596__en-us_topic_0000001233883299_en-us_topic_0000001145491115_b15362551141616">compatible_illegal_chars</strong>: When an illegal character is encountered, this parameter specifies whether to import an error, or convert it and proceed with the import.<div class="note" id="EN-US_TOPIC_0000001188323596__en-us_topic_0000001233883299_note1765721014911"><img src="public_sys-resources/note_3.0-en-us.png"><span class="notetitle"> </span><div class="notebody"><div class="p" id="EN-US_TOPIC_0000001188323596__en-us_topic_0000001233883299_a6c92135904d84f26becc3fc86e9fa677">Valid value: <strong id="EN-US_TOPIC_0000001188323596__en-us_topic_0000001233883299_b58834163742114">true</strong>, <strong id="EN-US_TOPIC_0000001188323596__en-us_topic_0000001233883299_b103439240842114">on</strong>, <strong id="EN-US_TOPIC_0000001188323596__en-us_topic_0000001233883299_b84338087542114">false</strong>, and <strong id="EN-US_TOPIC_0000001188323596__en-us_topic_0000001233883299_b100918862742114">off</strong>.<ul id="EN-US_TOPIC_0000001188323596__en-us_topic_0000001233883299_u2307f6198a8c40988c85f97d61499498"><li id="EN-US_TOPIC_0000001188323596__en-us_topic_0000001233883299_l84e5053a381848f78d84767b045c7313">When the parameter is <strong id="EN-US_TOPIC_0000001188323596__en-us_topic_0000001233883299_b22536945142114">true</strong> or <strong id="EN-US_TOPIC_0000001188323596__en-us_topic_0000001233883299_b80642830242114">on</strong>, invalid characters are tolerated and imported to the database after conversion.</li><li id="EN-US_TOPIC_0000001188323596__en-us_topic_0000001233883299_l04bcd3758397484e860af5f39751292f">If the parameter is <strong id="EN-US_TOPIC_0000001188323596__en-us_topic_0000001233883299_b80240243842114">false</strong> or <strong id="EN-US_TOPIC_0000001188323596__en-us_topic_0000001233883299_b48901337642114">off</strong>, and an error occurs when there are invalid characters, the import will be interrupted.</li></ul>
</div>
<p id="EN-US_TOPIC_0000001188323596__en-us_topic_0000001233883299_a5fb60cf3d1754e86878057d8ab683e9a">Default value: <strong id="EN-US_TOPIC_0000001188323596__en-us_topic_0000001233883299_b159360732242114">false</strong> or <strong id="EN-US_TOPIC_0000001188323596__en-us_topic_0000001233883299_b50459216742114">off</strong></p>
</div></div>
<p id="EN-US_TOPIC_0000001188323596__en-us_topic_0000001233883299_en-us_topic_0000001082830787_en-us_topic_0059778310_p13442883102042">The following describes the rules for converting an invalid character:</p>
<ul id="EN-US_TOPIC_0000001188323596__en-us_topic_0000001233883299_en-us_topic_0000001082830787_ul693854213329"><li id="EN-US_TOPIC_0000001188323596__en-us_topic_0000001233883299_en-us_topic_0000001082830787_li1565715409325"><strong id="EN-US_TOPIC_0000001188323596__en-us_topic_0000001233883299_en-us_topic_0000001145491115_b948934019179">\0</strong> is converted to a space.</li><li id="EN-US_TOPIC_0000001188323596__en-us_topic_0000001233883299_en-us_topic_0000001082830787_li1965714073218">Other invalid characters are converted to question marks (?).</li><li id="EN-US_TOPIC_0000001188323596__en-us_topic_0000001233883299_en-us_topic_0000001082830787_li2673124063212">If <strong id="EN-US_TOPIC_0000001188323596__en-us_topic_0000001233883299_en-us_topic_0000001145491115_b2616124414179">NULL</strong>, <strong id="EN-US_TOPIC_0000001188323596__en-us_topic_0000001233883299_en-us_topic_0000001145491115_b1261774416172">DELIMITER</strong>, <strong id="EN-US_TOPIC_0000001188323596__en-us_topic_0000001233883299_en-us_topic_0000001145491115_b861918444173">QUOTE</strong>, or <strong id="EN-US_TOPIC_0000001188323596__en-us_topic_0000001233883299_en-us_topic_0000001145491115_b19620744201718">ESCAPE</strong> is also set to a space or question mark, an error message such as "illegal chars conversion may confuse COPY escape 0x20" is displayed, prompting you to modify parameter settings that may cause import errors.</li></ul>
</li><li id="EN-US_TOPIC_0000001188323596__l0197538463034921bffa55634fa035d2"><strong id="EN-US_TOPIC_0000001188323596__b25664271116">error_table_name</strong>: This parameter specifies the name of the table that records data format errors. After the parallel import, you can query this table for error details.</li><li id="EN-US_TOPIC_0000001188323596__li156291832451"><strong id="EN-US_TOPIC_0000001188323596__b597374220818">remote log 'name'</strong>: This parameter specifies whether to store data format errors in files on the GDS server. <strong id="EN-US_TOPIC_0000001188323596__b842352706161211">name</strong> is the prefix of the error data file.</li><li id="EN-US_TOPIC_0000001188323596__li1115913012119">For details about more error tolerance parameters, see error tolerance parameters.</li></ul>
</div>
</p></li><li id="EN-US_TOPIC_0000001188323596__li683532820282"><span>After connecting to the database using <strong id="EN-US_TOPIC_0000001188323596__b591781563416">gsql</strong> or Data Studio, create a GDS foreign table based on the collected and design information.</span><p><p id="EN-US_TOPIC_0000001188323596__p183976571281">For example:</p>
<div class="codecoloring" codetype="Sql" id="EN-US_TOPIC_0000001188323596__screen1927510425306"><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>
<span class="normal">16</span>
<span class="normal">17</span>
<span class="normal">18</span>
<span class="normal">19</span></pre></div></td><td class="code"><div><pre><span></span><span class="k">CREATE</span><span class="w"> </span><span class="k">FOREIGN</span><span class="w"> </span><span class="k">TABLE</span><span class="w"> </span><span class="n">foreign_tpcds_reasons</span>
<span class="p">(</span>
<span class="w"> </span><span class="n">r_reason_sk</span><span class="w"> </span><span class="nb">integer</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="w"> </span><span class="n">r_reason_id</span><span class="w"> </span><span class="nb">char</span><span class="p">(</span><span class="mi">16</span><span class="p">)</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="w"> </span><span class="n">r_reason_desc</span><span class="w"> </span><span class="nb">char</span><span class="p">(</span><span class="mi">100</span><span class="p">)</span>
<span class="p">)</span>
<span class="w"> </span><span class="n">SERVER</span><span class="w"> </span><span class="n">gsmpp_server</span>
<span class="w"> </span><span class="k">OPTIONS</span><span class="w"> </span>
<span class="p">(</span>
<span class="k">LOCATION</span><span class="w"> </span><span class="s1">'gsfs://192.168.0.90:5000/* | gsfs://192.168.0.91:5000/*'</span><span class="p">,</span><span class="w"> </span>
<span class="n">FORMAT</span><span class="w"> </span><span class="s1">'CSV'</span><span class="w"> </span><span class="p">,</span>
<span class="k">DELIMITER</span><span class="w"> </span><span class="s1">','</span><span class="p">,</span>
<span class="k">ENCODING</span><span class="w"> </span><span class="s1">'utf8'</span><span class="p">,</span>
<span class="n">HEADER</span><span class="w"> </span><span class="s1">'false'</span><span class="p">,</span>
<span class="n">FILL_MISSING_FIELDS</span><span class="w"> </span><span class="s1">'true'</span><span class="p">,</span>
<span class="n">IGNORE_EXTRA_DATA</span><span class="w"> </span><span class="s1">'true'</span>
<span class="p">)</span>
<span class="n">LOG</span><span class="w"> </span><span class="k">INTO</span><span class="w"> </span><span class="n">product_info_err</span><span class="w"> </span>
<span class="n">PER</span><span class="w"> </span><span class="n">NODE</span><span class="w"> </span><span class="n">REJECT</span><span class="w"> </span><span class="k">LIMIT</span><span class="w"> </span><span class="s1">'unlimited'</span><span class="p">;</span>
</pre></div></td></tr></table></div>
</div>
<p id="EN-US_TOPIC_0000001188323596__p15956193114361">The following describes information in the preceding command:</p>
<ul id="EN-US_TOPIC_0000001188323596__ul155093487409"><li id="EN-US_TOPIC_0000001188323596__li3509548204014">The columns specified in the foreign table must be the same as those in the target table.</li><li id="EN-US_TOPIC_0000001188323596__li13602043134313">Retain the value <strong id="EN-US_TOPIC_0000001188323596__b371531333110">gsmpp_server</strong> for <strong id="EN-US_TOPIC_0000001188323596__b204638168316">SERVER</strong>.</li><li id="EN-US_TOPIC_0000001188323596__li6967174214448">Set <strong id="EN-US_TOPIC_0000001188323596__b1580394720206">location</strong> based on the GDS access information collected in <a href="#EN-US_TOPIC_0000001188323596__li175507108553">1</a>. If SSL is used, replace <strong id="EN-US_TOPIC_0000001188323596__b420771122214">gsfs</strong> with <strong id="EN-US_TOPIC_0000001188323596__b066421416229">gsfss</strong>.</li><li id="EN-US_TOPIC_0000001188323596__li1966110529477">Set <strong id="EN-US_TOPIC_0000001188323596__b13299141212214">FORMAT</strong>, <strong id="EN-US_TOPIC_0000001188323596__b1781981582115">DELIMITER</strong>, <strong id="EN-US_TOPIC_0000001188323596__b2785181992117">ENCODING</strong>, and <strong id="EN-US_TOPIC_0000001188323596__b16742922122118">HEADER</strong> based on the source data information collected in <a href="#EN-US_TOPIC_0000001188323596__li175507108553">1</a>.</li><li id="EN-US_TOPIC_0000001188323596__li2189929125516">Set <strong id="EN-US_TOPIC_0000001188323596__b2049412415237">FILL_MISSING_FIELDS</strong>, <strong id="EN-US_TOPIC_0000001188323596__b2567133119230">IGNORE_EXTRA_DATA</strong>, <strong id="EN-US_TOPIC_0000001188323596__b75863582319">LOG INTO</strong>, and <strong id="EN-US_TOPIC_0000001188323596__b114316408230">PER NODE REJECT LIMIT</strong> based on the error tolerance mechanism designed in <a href="#EN-US_TOPIC_0000001188323596__la571bf23a4b24288b5dce0d83a176a56">2</a>. <strong id="EN-US_TOPIC_0000001188323596__b14747113916299">LOG INTO</strong> specifies the name of the error table.</li></ul>
<p id="EN-US_TOPIC_0000001188323596__p52871756122810">For details about the CREATE FOREIGN TABLE syntax, see CREATE FOREIGN TABLE (for GDS Import and Export).</p>
</p></li></ol>
</div>
<div class="section" id="EN-US_TOPIC_0000001188323596__section123113117131"><h4 class="sectiontitle">Example</h4><p id="EN-US_TOPIC_0000001188323596__p136577500159">For more examples, see <a href="dws_04_0198.html">Example of Importing Data Using GDS</a>.</p>
<ul id="EN-US_TOPIC_0000001188323596__ul104181556161211"><li id="EN-US_TOPIC_0000001188323596__l40573bcc0cd147b88742d120c2e82b55">Example 1: Create a GDS foreign table named <strong id="EN-US_TOPIC_0000001188323596__b10260446132520">foreign_tpcds_reasons</strong>. The data format is CSV.<div class="codecoloring" codetype="Sql" id="EN-US_TOPIC_0000001188323596__s34434ed0d973488eb29d9c78431963c4"><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">FOREIGN</span><span class="w"> </span><span class="k">TABLE</span><span class="w"> </span><span class="n">foreign_tpcds_reasons</span>
<span class="p">(</span>
<span class="w"> </span><span class="n">r_reason_sk</span><span class="w"> </span><span class="nb">integer</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="w"> </span><span class="n">r_reason_id</span><span class="w"> </span><span class="nb">char</span><span class="p">(</span><span class="mi">16</span><span class="p">)</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="w"> </span><span class="n">r_reason_desc</span><span class="w"> </span><span class="nb">char</span><span class="p">(</span><span class="mi">100</span><span class="p">)</span>
<span class="p">)</span>
<span class="w"> </span><span class="n">SERVER</span><span class="w"> </span><span class="n">gsmpp_server</span><span class="w"> </span><span class="k">OPTIONS</span><span class="w"> </span><span class="p">(</span><span class="k">location</span><span class="w"> </span><span class="s1">'gsfs://192.168.0.90:5000/* | gsfs://192.168.0.91:5000/*'</span><span class="p">,</span><span class="w"> </span><span class="n">FORMAT</span><span class="w"> </span><span class="s1">'CSV'</span><span class="p">,</span><span class="k">MODE</span><span class="w"> </span><span class="s1">'Normal'</span><span class="p">,</span><span class="w"> </span><span class="k">ENCODING</span><span class="w"> </span><span class="s1">'utf8'</span><span class="p">,</span><span class="w"> </span><span class="k">DELIMITER</span><span class="w"> </span><span class="n">E</span><span class="s1">'\x08'</span><span class="p">,</span><span class="w"> </span><span class="n">QUOTE</span><span class="w"> </span><span class="n">E</span><span class="s1">'\x1b'</span><span class="p">,</span><span class="w"> </span><span class="k">NULL</span><span class="w"> </span><span class="s1">''</span><span class="p">);</span>
</pre></div></td></tr></table></div>
</div>
</li><li id="EN-US_TOPIC_0000001188323596__l11c1996e910f47a2af87dd03715c5817">Example 2: Create a GDS foreign table named <strong id="EN-US_TOPIC_0000001188323596__b1577365812263">foreign_tpcds_reasons_SSL</strong>. SSL is used and the data format is CSV.<div class="codecoloring" codetype="Sql" id="EN-US_TOPIC_0000001188323596__sc7885d7d2bc044b892f0484ab5a256f0"><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">FOREIGN</span><span class="w"> </span><span class="k">TABLE</span><span class="w"> </span><span class="n">foreign_tpcds_reasons_SSL</span>
<span class="p">(</span>
<span class="w"> </span><span class="n">r_reason_sk</span><span class="w"> </span><span class="nb">integer</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="w"> </span><span class="n">r_reason_id</span><span class="w"> </span><span class="nb">char</span><span class="p">(</span><span class="mi">16</span><span class="p">)</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="w"> </span><span class="n">r_reason_desc</span><span class="w"> </span><span class="nb">char</span><span class="p">(</span><span class="mi">100</span><span class="p">)</span>
<span class="p">)</span>
<span class="w"> </span><span class="n">SERVER</span><span class="w"> </span><span class="n">gsmpp_server</span><span class="w"> </span><span class="k">OPTIONS</span><span class="w"> </span><span class="p">(</span><span class="k">location</span><span class="w"> </span><span class="s1">'gsfss://192.168.0.90:5000/* | gsfss://192.168.0.91:5000/*'</span><span class="p">,</span><span class="w"> </span><span class="n">FORMAT</span><span class="w"> </span><span class="s1">'CSV'</span><span class="p">,</span><span class="k">MODE</span><span class="w"> </span><span class="s1">'Normal'</span><span class="p">,</span><span class="w"> </span><span class="k">ENCODING</span><span class="w"> </span><span class="s1">'utf8'</span><span class="p">,</span><span class="w"> </span><span class="k">DELIMITER</span><span class="w"> </span><span class="n">E</span><span class="s1">'\x08'</span><span class="p">,</span><span class="w"> </span><span class="n">QUOTE</span><span class="w"> </span><span class="n">E</span><span class="s1">'\x1b'</span><span class="p">,</span><span class="w"> </span><span class="k">NULL</span><span class="w"> </span><span class="s1">''</span><span class="p">);</span>
</pre></div></td></tr></table></div>
</div>
</li><li id="EN-US_TOPIC_0000001188323596__li21309216231">Example 3: Create a GDS foreign table named <strong id="EN-US_TOPIC_0000001188323596__b931157102817">foreign_tpcds_reasons</strong>. The data format is TEXT.<div class="codecoloring" codetype="Sql" id="EN-US_TOPIC_0000001188323596__screen10926163782418"><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></pre></div></td><td class="code"><div><pre><span></span><span class="k">CREATE</span><span class="w"> </span><span class="k">FOREIGN</span><span class="w"> </span><span class="k">TABLE</span><span class="w"> </span><span class="n">foreign_tpcds_reasons</span>
<span class="p">(</span>
<span class="w"> </span><span class="n">r_reason_sk</span><span class="w"> </span><span class="nb">integer</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="w"> </span><span class="n">r_reason_id</span><span class="w"> </span><span class="nb">char</span><span class="p">(</span><span class="mi">16</span><span class="p">)</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="w"> </span><span class="n">r_reason_desc</span><span class="w"> </span><span class="nb">char</span><span class="p">(</span><span class="mi">100</span><span class="p">)</span>
<span class="p">)</span><span class="w"> </span><span class="n">SERVER</span><span class="w"> </span><span class="n">gsmpp_server</span><span class="w"> </span><span class="k">OPTIONS</span><span class="w"> </span><span class="p">(</span><span class="k">location</span><span class="w"> </span><span class="s1">'gsfs://192.168.0.90:5000/* | gsfs://192.168.0.91:5000/*'</span><span class="p">,</span><span class="w"> </span><span class="n">FORMAT</span><span class="w"> </span><span class="s1">'TEXT'</span><span class="p">,</span><span class="w"> </span><span class="k">delimiter</span><span class="w"> </span><span class="n">E</span><span class="s1">'\x08'</span><span class="p">,</span><span class="w"> </span><span class="k">null</span><span class="w"> </span><span class="s1">''</span><span class="p">,</span><span class="n">reject_limit</span><span class="w"> </span><span class="s1">'2'</span><span class="p">,</span><span class="n">EOL</span><span class="w"> </span><span class="s1">'0x0D'</span><span class="p">)</span><span class="w"> </span><span class="k">WITH</span><span class="w"> </span><span class="n">err_foreign_tpcds_reasons</span><span class="p">;</span>
</pre></div></td></tr></table></div>
</div>
</li></ul>
<ul id="EN-US_TOPIC_0000001188323596__u356bf9f6954742178a778ea301f35dbb"><li id="EN-US_TOPIC_0000001188323596__l879b368d6f0a49e8937ca0f84c93a6b7">Example 4: Create a GDS foreign table named <strong id="EN-US_TOPIC_0000001188323596__b1751417161210">foreign_tpcds_reasons</strong>. The data format is FIXED.<div class="codecoloring" codetype="Sql" id="EN-US_TOPIC_0000001188323596__s776d040e551244b0b12133418b2272da"><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></pre></div></td><td class="code"><div><pre><span></span><span class="k">CREATE</span><span class="w"> </span><span class="k">FOREIGN</span><span class="w"> </span><span class="k">TABLE</span><span class="w"> </span><span class="n">foreign_tpcds_reasons</span>
<span class="p">(</span>
<span class="w"> </span><span class="n">r_reason_sk</span><span class="w"> </span><span class="nb">integer</span><span class="w"> </span><span class="k">position</span><span class="p">(</span><span class="mi">1</span><span class="p">,</span><span class="mi">2</span><span class="p">),</span>
<span class="w"> </span><span class="n">r_reason_id</span><span class="w"> </span><span class="nb">char</span><span class="p">(</span><span class="mi">16</span><span class="p">)</span><span class="w"> </span><span class="k">position</span><span class="p">(</span><span class="mi">3</span><span class="p">,</span><span class="mi">16</span><span class="p">),</span>
<span class="w"> </span><span class="n">r_reason_desc</span><span class="w"> </span><span class="nb">char</span><span class="p">(</span><span class="mi">100</span><span class="p">)</span><span class="w"> </span><span class="k">position</span><span class="p">(</span><span class="mi">19</span><span class="p">,</span><span class="mi">100</span><span class="p">)</span>
<span class="p">)</span><span class="w"> </span><span class="n">SERVER</span><span class="w"> </span><span class="n">gsmpp_server</span><span class="w"> </span><span class="k">OPTIONS</span><span class="w"> </span><span class="p">(</span><span class="k">location</span><span class="w"> </span><span class="s1">'gsfs://192.168.0.90:5000/*'</span><span class="p">,</span><span class="w"> </span><span class="n">FORMAT</span><span class="w"> </span><span class="s1">'FIXED'</span><span class="p">,</span><span class="w"> </span><span class="k">ENCODING</span><span class="w"> </span><span class="s1">'utf8'</span><span class="p">,</span><span class="n">FIX</span><span class="w"> </span><span class="s1">'119'</span><span class="p">);</span>
</pre></div></td></tr></table></div>
</div>
</li></ul>
</div>
</div>
<div>
<div class="familylinks">
<div class="parentlink"><strong>Parent topic:</strong> <a href="dws_04_0189.html">Using GDS to Import Data from a Remote Server</a></div>
</div>
</div>
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