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doc-exports/docs/dataartsstudio/umn/dataartsstudio_01_0109.html
chenxiaoxiong f9e2808b7c DataArts UMN 20250810 version 
Reviewed-by: Pruthi, Vineet <vineet.pruthi@t-systems.com>
Co-authored-by: chenxiaoxiong <chenxiaoxiong@huawei.com>
Co-committed-by: chenxiaoxiong <chenxiaoxiong@huawei.com>
2025-09-02 10:44:13 +00:00

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<a name="dataartsstudio_01_0109"></a><a name="dataartsstudio_01_0109"></a>
<h1 class="topictitle1">Recording the Time When Data Is Written to the Database</h1>
<div id="body32001227"><p id="dataartsstudio_01_0109__en-us_topic_0000001197579315_en-us_topic_0000001151779054_en-us_topic_0000001195742479_p8060118">When you create a job on the CDM console to migrate tables or files of a relational database, you can add a field to record the time when they were written to the database.</p>
<div class="section" id="dataartsstudio_01_0109__en-us_topic_0000001197579315_en-us_topic_0000001151779054_en-us_topic_0000001195742479_section47401948103919"><h4 class="sectiontitle">Prerequisites</h4><ul id="dataartsstudio_01_0109__en-us_topic_0000001197579315_en-us_topic_0000001151779054_en-us_topic_0000001195742479_ul0501115193613"><li id="dataartsstudio_01_0109__en-us_topic_0000001197579315_en-us_topic_0000001151779054_en-us_topic_0000001195742479_li350115158367">A link has been created, and the source end of the connector is a relational database.</li><li id="dataartsstudio_01_0109__en-us_topic_0000001197579315_en-us_topic_0000001151779054_en-us_topic_0000001195742479_li15492237114219">The destination data table contains a date and time field or timestamp field. In the automatic table creation scenario, you need to manually create the date and time field or timestamp field in the destination table in advance.</li></ul>
</div>
<div class="section" id="dataartsstudio_01_0109__en-us_topic_0000001197579315_en-us_topic_0000001151779054_en-us_topic_0000001195742479_section136154013402"><h4 class="sectiontitle">Creating a Table/File Migration Job</h4><ol id="dataartsstudio_01_0109__en-us_topic_0000001197579315_en-us_topic_0000001151779054_en-us_topic_0000001195742479_ol417301314372"><li id="dataartsstudio_01_0109__en-us_topic_0000001197579315_en-us_topic_0000001151779054_en-us_topic_0000001195742479_li1173213113719"><span>Create a table/file migration job, and select the created source connector and destination connector.</span></li><li id="dataartsstudio_01_0109__en-us_topic_0000001197579315_en-us_topic_0000001151779054_en-us_topic_0000001195742479_li15736173214385"><span>Click <strong id="dataartsstudio_01_0109__en-us_topic_0000001197579315_en-us_topic_0000001151779054_en-us_topic_0000001195742479_b4349174985315">Next</strong> to go to the <strong id="dataartsstudio_01_0109__en-us_topic_0000001197579315_en-us_topic_0000001151779054_en-us_topic_0000001195742479_b1385511124544">Map Field</strong> page and click <span><img id="dataartsstudio_01_0109__en-us_topic_0000001197579315_en-us_topic_0000001151779054_en-us_topic_0000001195742479_image172082598433" src="en-us_image_0000002269198197.png"></span>.</span><p><div class="fignone" id="dataartsstudio_01_0109__en-us_topic_0000001197579315_en-us_topic_0000001151779054_en-us_topic_0000001195742479_fig8589034195620"><span class="figcap"><b>Figure 1 </b>Configuring field mapping</span><br><span><img id="dataartsstudio_01_0109__en-us_topic_0000001197579315_en-us_topic_0000001151779054_en-us_topic_0000001195742479_image722215476425" src="en-us_image_0000002234078916.png" title="Click to enlarge" class="imgResize"></span></div>
</p></li><li id="dataartsstudio_01_0109__en-us_topic_0000001197579315_en-us_topic_0000001151779054_en-us_topic_0000001195742479_li1953933410381"><span>Click the <span class="uicontrol" id="dataartsstudio_01_0109__en-us_topic_0000001197579315_en-us_topic_0000001151779054_en-us_topic_0000001195742479_uicontrol84613101275"><b>Custom Fields</b></span> tab, set the field name and value, and click <strong id="dataartsstudio_01_0109__en-us_topic_0000001197579315_en-us_topic_0000001151779054_en-us_topic_0000001195742479_b64611610142710">OK</strong>.</span><p><p id="dataartsstudio_01_0109__en-us_topic_0000001197579315_en-us_topic_0000001151779054_en-us_topic_0000001195742479_p230544822516"><strong id="dataartsstudio_01_0109__en-us_topic_0000001197579315_en-us_topic_0000001151779054_en-us_topic_0000001195742479_b111237124591">Name</strong>: Enter <strong id="dataartsstudio_01_0109__en-us_topic_0000001197579315_en-us_topic_0000001151779054_en-us_topic_0000001195742479_b871617195916">InputTime</strong>.</p>
<div class="p" id="dataartsstudio_01_0109__en-us_topic_0000001197579315_en-us_topic_0000001151779054_en-us_topic_0000001195742479_p1493016452289"><strong id="dataartsstudio_01_0109__en-us_topic_0000001197579315_en-us_topic_0000001151779054_en-us_topic_0000001195742479_b10576720135918">Value</strong>: Enter <strong id="dataartsstudio_01_0109__en-us_topic_0000001197579315_en-us_topic_0000001151779054_en-us_topic_0000001195742479_b372318268598">${timestamp()}</strong>. For more time macro variables, see <a href="#dataartsstudio_01_0109__en-us_topic_0000001197579315_en-us_topic_0000001151779054_en-us_topic_0000001195742479_table362794973216">Table 1</a>.<div class="fignone" id="dataartsstudio_01_0109__en-us_topic_0000001197579315_en-us_topic_0000001151779054_en-us_topic_0000001195742479_fig1210244842515"><span class="figcap"><b>Figure 2 </b>Add Field</span><br><span><img id="dataartsstudio_01_0109__en-us_topic_0000001197579315_en-us_topic_0000001151779054_en-us_topic_0000001195742479_image20102548172511" src="en-us_image_0000002269118121.png" title="Click to enlarge" class="imgResize"></span></div>
<div class="tablenoborder"><a name="dataartsstudio_01_0109__en-us_topic_0000001197579315_en-us_topic_0000001151779054_en-us_topic_0000001195742479_table362794973216"></a><a name="en-us_topic_0000001197579315_en-us_topic_0000001151779054_en-us_topic_0000001195742479_table362794973216"></a><table cellpadding="4" cellspacing="0" summary="" id="dataartsstudio_01_0109__en-us_topic_0000001197579315_en-us_topic_0000001151779054_en-us_topic_0000001195742479_table362794973216" frame="border" border="1" rules="all"><caption><b>Table 1 </b>Macro variable definition of time and date</caption><thead align="left"><tr id="dataartsstudio_01_0109__en-us_topic_0000001197579315_en-us_topic_0000001151779054_en-us_topic_0000001195742479_en-us_topic_0108275294_row25675957114353"><th align="left" class="cellrowborder" valign="top" width="36.86368636863686%" id="mcps1.3.3.2.3.2.2.5.2.4.1.1"><p id="dataartsstudio_01_0109__en-us_topic_0000001197579315_en-us_topic_0000001151779054_en-us_topic_0000001195742479_en-us_topic_0108275294_p66486673114353">Macro Variable</p>
</th>
<th align="left" class="cellrowborder" valign="top" width="38.083808380838086%" id="mcps1.3.3.2.3.2.2.5.2.4.1.2"><p id="dataartsstudio_01_0109__en-us_topic_0000001197579315_en-us_topic_0000001151779054_en-us_topic_0000001195742479_en-us_topic_0108275294_p16711400114353">Description</p>
</th>
<th align="left" class="cellrowborder" valign="top" width="25.052505250525055%" id="mcps1.3.3.2.3.2.2.5.2.4.1.3"><p id="dataartsstudio_01_0109__en-us_topic_0000001197579315_en-us_topic_0000001151779054_en-us_topic_0000001195742479_en-us_topic_0108275294_p11446180114353">Display Effect</p>
</th>
</tr>
</thead>
<tbody><tr id="dataartsstudio_01_0109__en-us_topic_0000001197579315_en-us_topic_0000001151779054_en-us_topic_0000001195742479_en-us_topic_0108275294_row35906764114353"><td class="cellrowborder" valign="top" width="36.86368636863686%" headers="mcps1.3.3.2.3.2.2.5.2.4.1.1 "><p id="dataartsstudio_01_0109__en-us_topic_0000001197579315_en-us_topic_0000001151779054_en-us_topic_0000001195742479_en-us_topic_0108275294_p22766746114353">${dateformat(yyyy-MM-dd)}</p>
</td>
<td class="cellrowborder" valign="top" width="38.083808380838086%" headers="mcps1.3.3.2.3.2.2.5.2.4.1.2 "><p id="dataartsstudio_01_0109__en-us_topic_0000001197579315_en-us_topic_0000001151779054_en-us_topic_0000001195742479_en-us_topic_0108275294_p32167104114353">Returns the current date in <strong id="dataartsstudio_01_0109__en-us_topic_0000001197579315_en-us_topic_0000001151779054_en-us_topic_0000001195742479_en-us_topic_0108275294_b84235270611157_1">yyyy-MM-dd</strong> format.</p>
</td>
<td class="cellrowborder" valign="top" width="25.052505250525055%" headers="mcps1.3.3.2.3.2.2.5.2.4.1.3 "><p id="dataartsstudio_01_0109__en-us_topic_0000001197579315_en-us_topic_0000001151779054_en-us_topic_0000001195742479_en-us_topic_0108275294_p55398631114353">2017-10-16</p>
</td>
</tr>
<tr id="dataartsstudio_01_0109__en-us_topic_0000001197579315_en-us_topic_0000001151779054_en-us_topic_0000001195742479_en-us_topic_0108275294_row28825634114353"><td class="cellrowborder" valign="top" width="36.86368636863686%" headers="mcps1.3.3.2.3.2.2.5.2.4.1.1 "><p id="dataartsstudio_01_0109__en-us_topic_0000001197579315_en-us_topic_0000001151779054_en-us_topic_0000001195742479_en-us_topic_0108275294_p53175021114353">${dateformat(yyyy/MM/dd)}</p>
</td>
<td class="cellrowborder" valign="top" width="38.083808380838086%" headers="mcps1.3.3.2.3.2.2.5.2.4.1.2 "><p id="dataartsstudio_01_0109__en-us_topic_0000001197579315_en-us_topic_0000001151779054_en-us_topic_0000001195742479_en-us_topic_0108275294_p12209420114353">Returns the current date in <strong id="dataartsstudio_01_0109__en-us_topic_0000001197579315_en-us_topic_0000001151779054_en-us_topic_0000001195742479_en-us_topic_0108275294_b84235270611157_3">yyyy/MM/dd</strong> format.</p>
</td>
<td class="cellrowborder" valign="top" width="25.052505250525055%" headers="mcps1.3.3.2.3.2.2.5.2.4.1.3 "><p id="dataartsstudio_01_0109__en-us_topic_0000001197579315_en-us_topic_0000001151779054_en-us_topic_0000001195742479_en-us_topic_0108275294_p49438952114353">2017/10/16</p>
</td>
</tr>
<tr id="dataartsstudio_01_0109__en-us_topic_0000001197579315_en-us_topic_0000001151779054_en-us_topic_0000001195742479_en-us_topic_0108275294_row42297384114353"><td class="cellrowborder" valign="top" width="36.86368636863686%" headers="mcps1.3.3.2.3.2.2.5.2.4.1.1 "><p id="dataartsstudio_01_0109__en-us_topic_0000001197579315_en-us_topic_0000001151779054_en-us_topic_0000001195742479_en-us_topic_0108275294_p3536041114353">${dateformat(yyyy_MM_dd HH:mm:ss)}</p>
</td>
<td class="cellrowborder" valign="top" width="38.083808380838086%" headers="mcps1.3.3.2.3.2.2.5.2.4.1.2 "><p id="dataartsstudio_01_0109__en-us_topic_0000001197579315_en-us_topic_0000001151779054_en-us_topic_0000001195742479_en-us_topic_0108275294_p17983899114353">Returns the current time in <strong id="dataartsstudio_01_0109__en-us_topic_0000001197579315_en-us_topic_0000001151779054_en-us_topic_0000001195742479_en-us_topic_0108275294_b1354035791111528">yyyy_MM_dd HH:mm:ss</strong> format.</p>
</td>
<td class="cellrowborder" valign="top" width="25.052505250525055%" headers="mcps1.3.3.2.3.2.2.5.2.4.1.3 "><p id="dataartsstudio_01_0109__en-us_topic_0000001197579315_en-us_topic_0000001151779054_en-us_topic_0000001195742479_en-us_topic_0108275294_p47409701114353">2017_10_16 09:00:00</p>
</td>
</tr>
<tr id="dataartsstudio_01_0109__en-us_topic_0000001197579315_en-us_topic_0000001151779054_en-us_topic_0000001195742479_en-us_topic_0108275294_row24034131114353"><td class="cellrowborder" valign="top" width="36.86368636863686%" headers="mcps1.3.3.2.3.2.2.5.2.4.1.1 "><p id="dataartsstudio_01_0109__en-us_topic_0000001197579315_en-us_topic_0000001151779054_en-us_topic_0000001195742479_en-us_topic_0108275294_p607605114353">${dateformat(yyyy-MM-dd HH:mm:ss, -1, DAY)}</p>
</td>
<td class="cellrowborder" valign="top" width="38.083808380838086%" headers="mcps1.3.3.2.3.2.2.5.2.4.1.2 "><p id="dataartsstudio_01_0109__en-us_topic_0000001197579315_en-us_topic_0000001151779054_en-us_topic_0000001195742479_en-us_topic_0108275294_p49216068114353">Returns the current time in <strong id="dataartsstudio_01_0109__en-us_topic_0000001197579315_en-us_topic_0000001151779054_en-us_topic_0000001195742479_en-us_topic_0108275294_b548592296111548">yyyy-MM-dd HH:mm:ss</strong> format. The date is one day before the current day.</p>
</td>
<td class="cellrowborder" valign="top" width="25.052505250525055%" headers="mcps1.3.3.2.3.2.2.5.2.4.1.3 "><p id="dataartsstudio_01_0109__en-us_topic_0000001197579315_en-us_topic_0000001151779054_en-us_topic_0000001195742479_en-us_topic_0108275294_p27078567114353">2017-10-15 09:00:00</p>
</td>
</tr>
<tr id="dataartsstudio_01_0109__en-us_topic_0000001197579315_en-us_topic_0000001151779054_en-us_topic_0000001195742479_en-us_topic_0108275294_row42521033078"><td class="cellrowborder" valign="top" width="36.86368636863686%" headers="mcps1.3.3.2.3.2.2.5.2.4.1.1 "><p id="dataartsstudio_01_0109__en-us_topic_0000001197579315_en-us_topic_0000001151779054_en-us_topic_0000001195742479_en-us_topic_0108275294_p814653611815">${dateformat(yyyy-MM-dd, -1, DAY)} 00:00:00</p>
</td>
<td class="cellrowborder" valign="top" width="38.083808380838086%" headers="mcps1.3.3.2.3.2.2.5.2.4.1.2 "><p id="dataartsstudio_01_0109__en-us_topic_0000001197579315_en-us_topic_0000001151779054_en-us_topic_0000001195742479_en-us_topic_0108275294_p7613101888">Returns 00:00:00 of the day before the current day in <em id="dataartsstudio_01_0109__en-us_topic_0000001197579315_en-us_topic_0000001151779054_en-us_topic_0000001195742479_en-us_topic_0108275294_i141981454135210">yyyy-MM-dd HH:mm:ss</em> format.</p>
</td>
<td class="cellrowborder" valign="top" width="25.052505250525055%" headers="mcps1.3.3.2.3.2.2.5.2.4.1.3 "><p id="dataartsstudio_01_0109__en-us_topic_0000001197579315_en-us_topic_0000001151779054_en-us_topic_0000001195742479_en-us_topic_0108275294_p88681620195">2017-10-15 00:00:00</p>
</td>
</tr>
<tr id="dataartsstudio_01_0109__en-us_topic_0000001197579315_en-us_topic_0000001151779054_en-us_topic_0000001195742479_en-us_topic_0108275294_row7697133977"><td class="cellrowborder" valign="top" width="36.86368636863686%" headers="mcps1.3.3.2.3.2.2.5.2.4.1.1 "><p id="dataartsstudio_01_0109__en-us_topic_0000001197579315_en-us_topic_0000001151779054_en-us_topic_0000001195742479_en-us_topic_0108275294_p18656163310919">${dateformat(yyyy-MM-dd, -1, DAY)} 12:00:00</p>
</td>
<td class="cellrowborder" valign="top" width="38.083808380838086%" headers="mcps1.3.3.2.3.2.2.5.2.4.1.2 "><p id="dataartsstudio_01_0109__en-us_topic_0000001197579315_en-us_topic_0000001151779054_en-us_topic_0000001195742479_en-us_topic_0108275294_p1656203315911">Returns 12:00:00 of the day before the current day in <em id="dataartsstudio_01_0109__en-us_topic_0000001197579315_en-us_topic_0000001151779054_en-us_topic_0000001195742479_en-us_topic_0108275294_i15157925538">yyyy-MM-dd HH:mm:ss</em> format.</p>
</td>
<td class="cellrowborder" valign="top" width="25.052505250525055%" headers="mcps1.3.3.2.3.2.2.5.2.4.1.3 "><p id="dataartsstudio_01_0109__en-us_topic_0000001197579315_en-us_topic_0000001151779054_en-us_topic_0000001195742479_en-us_topic_0108275294_p865603314910">2017-10-15 12:00:00</p>
</td>
</tr>
<tr id="dataartsstudio_01_0109__en-us_topic_0000001197579315_en-us_topic_0000001151779054_en-us_topic_0000001195742479_en-us_topic_0108275294_row1782211331671"><td class="cellrowborder" valign="top" width="36.86368636863686%" headers="mcps1.3.3.2.3.2.2.5.2.4.1.1 "><p id="dataartsstudio_01_0109__en-us_topic_0000001197579315_en-us_topic_0000001151779054_en-us_topic_0000001195742479_en-us_topic_0108275294_p1424343615919">${dateformat(yyyy-MM-dd, -N, DAY)} 00:00:00</p>
</td>
<td class="cellrowborder" valign="top" width="38.083808380838086%" headers="mcps1.3.3.2.3.2.2.5.2.4.1.2 "><p id="dataartsstudio_01_0109__en-us_topic_0000001197579315_en-us_topic_0000001151779054_en-us_topic_0000001195742479_en-us_topic_0108275294_p524313361197">Returns 00:00:00 of the day N days before the current day in <em id="dataartsstudio_01_0109__en-us_topic_0000001197579315_en-us_topic_0000001151779054_en-us_topic_0000001195742479_en-us_topic_0108275294_i2981177175315">yyyy-MM-dd HH:mm:ss</em> format.</p>
</td>
<td class="cellrowborder" valign="top" width="25.052505250525055%" headers="mcps1.3.3.2.3.2.2.5.2.4.1.3 "><p id="dataartsstudio_01_0109__en-us_topic_0000001197579315_en-us_topic_0000001151779054_en-us_topic_0000001195742479_en-us_topic_0108275294_p137681181118">When N is 3:</p>
<p id="dataartsstudio_01_0109__en-us_topic_0000001197579315_en-us_topic_0000001151779054_en-us_topic_0000001195742479_en-us_topic_0108275294_p1524316361492">2017-10-13 00:00:00</p>
</td>
</tr>
<tr id="dataartsstudio_01_0109__en-us_topic_0000001197579315_en-us_topic_0000001151779054_en-us_topic_0000001195742479_en-us_topic_0108275294_row123153343719"><td class="cellrowborder" valign="top" width="36.86368636863686%" headers="mcps1.3.3.2.3.2.2.5.2.4.1.1 "><p id="dataartsstudio_01_0109__en-us_topic_0000001197579315_en-us_topic_0000001151779054_en-us_topic_0000001195742479_en-us_topic_0108275294_p1133320371091">${dateformat(yyyy-MM-dd, -N, DAY)} 12:00:00</p>
</td>
<td class="cellrowborder" valign="top" width="38.083808380838086%" headers="mcps1.3.3.2.3.2.2.5.2.4.1.2 "><p id="dataartsstudio_01_0109__en-us_topic_0000001197579315_en-us_topic_0000001151779054_en-us_topic_0000001195742479_en-us_topic_0108275294_p123331037693">Returns 12:00:00 of the day N days before the current day in <em id="dataartsstudio_01_0109__en-us_topic_0000001197579315_en-us_topic_0000001151779054_en-us_topic_0000001195742479_en-us_topic_0108275294_i1334519155319">yyyy-MM-dd HH:mm:ss</em> format.</p>
</td>
<td class="cellrowborder" valign="top" width="25.052505250525055%" headers="mcps1.3.3.2.3.2.2.5.2.4.1.3 "><p id="dataartsstudio_01_0109__en-us_topic_0000001197579315_en-us_topic_0000001151779054_en-us_topic_0000001195742479_en-us_topic_0108275294_p1210015516127">When N is 3:</p>
<p id="dataartsstudio_01_0109__en-us_topic_0000001197579315_en-us_topic_0000001151779054_en-us_topic_0000001195742479_en-us_topic_0108275294_p033310371696">2017-10-13 12:00:00</p>
</td>
</tr>
<tr id="dataartsstudio_01_0109__en-us_topic_0000001197579315_en-us_topic_0000001151779054_en-us_topic_0000001195742479_en-us_topic_0108275294_row42380516114353"><td class="cellrowborder" valign="top" width="36.86368636863686%" headers="mcps1.3.3.2.3.2.2.5.2.4.1.1 "><p id="dataartsstudio_01_0109__en-us_topic_0000001197579315_en-us_topic_0000001151779054_en-us_topic_0000001195742479_en-us_topic_0108275294_p10269761114353">${timestamp()}</p>
</td>
<td class="cellrowborder" valign="top" width="38.083808380838086%" headers="mcps1.3.3.2.3.2.2.5.2.4.1.2 "><p id="dataartsstudio_01_0109__en-us_topic_0000001197579315_en-us_topic_0000001151779054_en-us_topic_0000001195742479_en-us_topic_0108275294_p16486833114640">Returns the timestamp of the current time, that is, the number of milliseconds that have elapsed since 00:00:00 on January 1, 1970.</p>
</td>
<td class="cellrowborder" valign="top" width="25.052505250525055%" headers="mcps1.3.3.2.3.2.2.5.2.4.1.3 "><p id="dataartsstudio_01_0109__en-us_topic_0000001197579315_en-us_topic_0000001151779054_en-us_topic_0000001195742479_en-us_topic_0108275294_p2604220114353">1508115600000</p>
</td>
</tr>
<tr id="dataartsstudio_01_0109__en-us_topic_0000001197579315_en-us_topic_0000001151779054_en-us_topic_0000001195742479_en-us_topic_0108275294_row23437985114353"><td class="cellrowborder" valign="top" width="36.86368636863686%" headers="mcps1.3.3.2.3.2.2.5.2.4.1.1 "><p id="dataartsstudio_01_0109__en-us_topic_0000001197579315_en-us_topic_0000001151779054_en-us_topic_0000001195742479_en-us_topic_0108275294_p19428610114353">${timestamp(-10, MINUTE)}</p>
</td>
<td class="cellrowborder" valign="top" width="38.083808380838086%" headers="mcps1.3.3.2.3.2.2.5.2.4.1.2 "><p id="dataartsstudio_01_0109__en-us_topic_0000001197579315_en-us_topic_0000001151779054_en-us_topic_0000001195742479_en-us_topic_0108275294_p30213609114353">Returns the timestamp generated 10 minutes before the current time point.</p>
</td>
<td class="cellrowborder" valign="top" width="25.052505250525055%" headers="mcps1.3.3.2.3.2.2.5.2.4.1.3 "><p id="dataartsstudio_01_0109__en-us_topic_0000001197579315_en-us_topic_0000001151779054_en-us_topic_0000001195742479_en-us_topic_0108275294_p31383227114353">1508115000000</p>
</td>
</tr>
<tr id="dataartsstudio_01_0109__en-us_topic_0000001197579315_en-us_topic_0000001151779054_en-us_topic_0000001195742479_en-us_topic_0108275294_row04676276214"><td class="cellrowborder" valign="top" width="36.86368636863686%" headers="mcps1.3.3.2.3.2.2.5.2.4.1.1 "><p id="dataartsstudio_01_0109__en-us_topic_0000001197579315_en-us_topic_0000001151779054_en-us_topic_0000001195742479_en-us_topic_0108275294_p13467227324">${timestamp(dateformat(yyyyMMdd))}</p>
</td>
<td class="cellrowborder" valign="top" width="38.083808380838086%" headers="mcps1.3.3.2.3.2.2.5.2.4.1.2 "><p id="dataartsstudio_01_0109__en-us_topic_0000001197579315_en-us_topic_0000001151779054_en-us_topic_0000001195742479_en-us_topic_0108275294_p2046715271624">Returns the timestamp of 00:00:00 of the current day.</p>
</td>
<td class="cellrowborder" valign="top" width="25.052505250525055%" headers="mcps1.3.3.2.3.2.2.5.2.4.1.3 "><p id="dataartsstudio_01_0109__en-us_topic_0000001197579315_en-us_topic_0000001151779054_en-us_topic_0000001195742479_en-us_topic_0108275294_p346772712219">1508083200000</p>
</td>
</tr>
<tr id="dataartsstudio_01_0109__en-us_topic_0000001197579315_en-us_topic_0000001151779054_en-us_topic_0000001195742479_en-us_topic_0108275294_row13469861734"><td class="cellrowborder" valign="top" width="36.86368636863686%" headers="mcps1.3.3.2.3.2.2.5.2.4.1.1 "><p id="dataartsstudio_01_0109__en-us_topic_0000001197579315_en-us_topic_0000001151779054_en-us_topic_0000001195742479_en-us_topic_0108275294_p3469261931">${timestamp(dateformat(yyyyMMdd,-1,DAY))}</p>
</td>
<td class="cellrowborder" valign="top" width="38.083808380838086%" headers="mcps1.3.3.2.3.2.2.5.2.4.1.2 "><p id="dataartsstudio_01_0109__en-us_topic_0000001197579315_en-us_topic_0000001151779054_en-us_topic_0000001195742479_en-us_topic_0108275294_p1346916617310">Returns the timestamp of 00:00:00 of the previous day.</p>
</td>
<td class="cellrowborder" valign="top" width="25.052505250525055%" headers="mcps1.3.3.2.3.2.2.5.2.4.1.3 "><p id="dataartsstudio_01_0109__en-us_topic_0000001197579315_en-us_topic_0000001151779054_en-us_topic_0000001195742479_en-us_topic_0108275294_p1850544303">1507996800000</p>
</td>
</tr>
<tr id="dataartsstudio_01_0109__en-us_topic_0000001197579315_en-us_topic_0000001151779054_en-us_topic_0000001195742479_en-us_topic_0108275294_row9908557931"><td class="cellrowborder" valign="top" width="36.86368636863686%" headers="mcps1.3.3.2.3.2.2.5.2.4.1.1 "><p id="dataartsstudio_01_0109__en-us_topic_0000001197579315_en-us_topic_0000001151779054_en-us_topic_0000001195742479_en-us_topic_0108275294_p690865716318">${timestamp(dateformat(yyyyMMddHH))}</p>
</td>
<td class="cellrowborder" valign="top" width="38.083808380838086%" headers="mcps1.3.3.2.3.2.2.5.2.4.1.2 "><p id="dataartsstudio_01_0109__en-us_topic_0000001197579315_en-us_topic_0000001151779054_en-us_topic_0000001195742479_en-us_topic_0108275294_p690845712319">Returns the timestamp of the current hour.</p>
</td>
<td class="cellrowborder" valign="top" width="25.052505250525055%" headers="mcps1.3.3.2.3.2.2.5.2.4.1.3 "><p id="dataartsstudio_01_0109__en-us_topic_0000001197579315_en-us_topic_0000001151779054_en-us_topic_0000001195742479_en-us_topic_0108275294_p14299181316302">1508115600000</p>
</td>
</tr>
</tbody>
</table>
</div>
<div class="note" id="dataartsstudio_01_0109__en-us_topic_0000001197579315_en-us_topic_0000001151779054_en-us_topic_0000001195742479_note61021848122516"><img src="public_sys-resources/note_3.0-en-us.png"><span class="notetitle"> </span><div class="notebody"><ul id="dataartsstudio_01_0109__en-us_topic_0000001197579315_en-us_topic_0000001151779054_en-us_topic_0000001195742479_ul191024481251"><li id="dataartsstudio_01_0109__en-us_topic_0000001197579315_en-us_topic_0000001151779054_en-us_topic_0000001195742479_li5102448142517">After a field is added, its sample value is not displayed on the console. This does not affect the field value transmission. CDM directly writes the field value to the destination end.</li><li id="dataartsstudio_01_0109__en-us_topic_0000001197579315_en-us_topic_0000001151779054_en-us_topic_0000001195742479_li201029485258">The <span class="uicontrol" id="dataartsstudio_01_0109__en-us_topic_0000001197579315_en-us_topic_0000001151779054_en-us_topic_0000001195742479_uicontrol17213622132717"><b>Custom Fields</b></span> tab is available only when the source connector is JDBC, HBase, MongoDB, Elasticsearch, or Kafka, or the destination connector is HBase.</li><li id="dataartsstudio_01_0109__en-us_topic_0000001197579315_en-us_topic_0000001151779054_en-us_topic_0000001195742479_li72407615399">After adding the fields, ensure that the customized import time field matches the field type of the destination table.</li></ul>
</div></div>
</div>
</p></li><li id="dataartsstudio_01_0109__en-us_topic_0000001197579315_en-us_topic_0000001151779054_en-us_topic_0000001195742479_li158323771615"><span>Click <span class="uicontrol" id="dataartsstudio_01_0109__en-us_topic_0000001197579315_en-us_topic_0000001151779054_en-us_topic_0000001195742479_uicontrol843125019616"><b>Next</b></span> and set task parameters. Generally, retain the default values of all parameters.</span></li><li id="dataartsstudio_01_0109__en-us_topic_0000001197579315_en-us_topic_0000001151779054_en-us_topic_0000001195742479_li1399525751615"><span>Click <strong id="dataartsstudio_01_0109__en-us_topic_0000001197579315_en-us_topic_0000001151779054_en-us_topic_0000001195742479_b246151562818">Save and Run</strong>. On the <strong id="dataartsstudio_01_0109__en-us_topic_0000001197579315_en-us_topic_0000001151779054_en-us_topic_0000001195742479_b19471415162813">Table/File Migration</strong> page, you can view the job execution progress and result.</span></li><li id="dataartsstudio_01_0109__en-us_topic_0000001197579315_en-us_topic_0000001151779054_en-us_topic_0000001195742479_li899016601710"><span>After the job is successfully executed, in the <strong id="dataartsstudio_01_0109__en-us_topic_0000001197579315_en-us_topic_0000001151779054_en-us_topic_0000001195742479_b103931399167">Operation</strong> column of the job, click <span class="uicontrol" id="dataartsstudio_01_0109__en-us_topic_0000001197579315_en-us_topic_0000001151779054_en-us_topic_0000001195742479_uicontrol163941839101612"><b>Historical Record</b></span> to view the job's historical execution records and read/write statistics.</span><p><p id="dataartsstudio_01_0109__en-us_topic_0000001197579315_en-us_topic_0000001151779054_en-us_topic_0000001195742479_p1353045613492">On the <strong id="dataartsstudio_01_0109__en-us_topic_0000001197579315_en-us_topic_0000001151779054_en-us_topic_0000001195742479_b1941077383112542">Historical Record</strong> page, click <span class="uicontrol" id="dataartsstudio_01_0109__en-us_topic_0000001197579315_en-us_topic_0000001151779054_en-us_topic_0000001195742479_uicontrol194030413112542"><b>Log</b></span> to view the job logs.</p>
</p></li><li id="dataartsstudio_01_0109__en-us_topic_0000001197579315_en-us_topic_0000001151779054_en-us_topic_0000001195742479_li22014118498"><span>Go to the destination data source to check the time when the data is imported to the database.</span></li></ol>
</div>
</div>
<div>
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<div class="parentlink"><strong>Parent topic:</strong> <a href="dataartsstudio_01_0110.html">Key Operation Guide</a></div>
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