uTools-Manuals/docs/sql/INSERT INTO 语句.html

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<h1>SQL INSERT INTO 语句</h1>
<p class="intro">INSERT INTO 语句用于向表中插入新记录。</p> <h2>SQL INSERT INTO 语句</h2> <p>INSERT INTO 语句用于向表中插入新记录。</p> <h3>SQL INSERT INTO 语法</h3> <p>INSERT INTO 语句可以有两种编写形式。</p> <p>第一种形式无需指定要插入数据的列名，只需提供被插入的值即可：</p> <div class="code notranslate"><pre><div> INSERT INTO <em>table_name</em><br/> VALUES (<em>value1</em>,<em>value2</em>,<em>value3</em>,...);</div></pre></div> <p>第二种形式需要指定列名及被插入的值：</p> <div class="code notranslate"><pre><div> INSERT INTO <em>table_name</em> (<em>column1</em>,<em>column2</em>,<em>column3</em>,...)<br/> VALUES (<em>value1</em>,<em>value2</em>,<em>value3</em>,...);</div></pre></div> <h2>演示数据库</h2> <p>在本教程中，我们将使用众所周知的 Northwind 样本数据库。</p> <p>下面是选自 "Customers" 表的数据：</p> <table class="reference notranslate">
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<th>CustomerID</th> <th>CustomerName</th> <th>ContactName</th> <th>Address</th> <th>City</th> <th>PostalCode</th> <th>Country</th> </tr>
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<td>87</td> <td>Wartian Herkku</td> <td>Pirkko Koskitalo</td> <td>Torikatu 38</td> <td>Oulu</td> <td>90110</td> <td>Finland</td> </tr>
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<td>88</td> <td>Wellington Importadora</td> <td>Paula Parente</td> <td>Rua do Mercado, 12</td> <td>Resende</td> <td>08737-363</td> <td>Brazil</td> </tr>
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<td>89</td> <td>White Clover Markets</td> <td>Karl Jablonski</td> <td>305 - 14th Ave. S. Suite 3B</td> <td>Seattle</td> <td>98128</td> <td>USA</td> </tr>
<tr>
<td>90<br/><br/>
</td> <td>Wilman Kala</td> <td>Matti Karttunen</td> <td>Keskuskatu 45</td> <td>Helsinki</td> <td>21240</td> <td>Finland</td> </tr>
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<td>91<br/><br/>
</td> <td>Wolski</td> <td>Zbyszek</td> <td>ul. Filtrowa 68</td> <td>Walla</td> <td>01-012</td> <td>Poland</td> </tr>
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<h2>INSERT INTO 实例</h2> <p>假设我们要向 "Customers" 表中插入一个新行。</p> <p>我们可以使用下面的 SQL 语句：</p> <div class="example margin-b-10"> <h2 class="example">实例</h2> <pre><div class="example_code notranslate"> INSERT INTO Customers (CustomerName, ContactName, Address, City, PostalCode, Country)<br/> VALUES ('Cardinal','Tom B. Erichsen','Skagen 21','Stavanger','4006','Norway'); </div></pre> </div> <p>现在，选自 "Customers" 表的数据如下所示：</p> <table class="reference notranslate">
<tr>
<th>CustomerID</th> <th>CustomerName</th> <th>ContactName</th> <th>Address</th> <th>City</th> <th>PostalCode</th> <th>Country</th> </tr>
<tr>
<td>87</td> <td>Wartian Herkku</td> <td>Pirkko Koskitalo</td> <td>Torikatu 38</td> <td>Oulu</td> <td>90110</td> <td>Finland</td> </tr>
<tr>
<td>88</td> <td>Wellington Importadora</td> <td>Paula Parente</td> <td>Rua do Mercado, 12</td> <td>Resende</td> <td>08737-363</td> <td>Brazil</td> </tr>
<tr>
<td>89</td> <td>White Clover Markets</td> <td>Karl Jablonski</td> <td>305 - 14th Ave. S. Suite 3B</td> <td>Seattle</td> <td>98128</td> <td>USA</td> </tr>
<tr>
<td>90<br/><br/>
</td> <td>Wilman Kala</td> <td>Matti Karttunen</td> <td>Keskuskatu 45</td> <td>Helsinki</td> <td>21240</td> <td>Finland</td> </tr>
<tr>
<td>91<br/><br/>
</td> <td>Wolski</td> <td>Zbyszek</td> <td>ul. Filtrowa 68</td> <td>Walla</td> <td>01-012</td> <td>Poland</td> </tr>
<tr>
<td>92</td> <td>Cardinal</td> <td>Tom B. Erichsen</td> <td>Skagen 21</td> <td>Stavanger</td> <td>4006</td> <td>Norway</td> </tr>
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<th width="34"><span aria-hidden="true" class="g-bg glyphicon glyphicon-flag margin-l-5"></span></th> <td> <strong>您是否注意到，我们没有向 CustomerID 字段插入任何数字？</strong><br/>CustomerID 列是自动更新的，表中的每条记录都有一个唯一的数字。</td> </tr></table>
<h2>在指定的列插入数据</h2> <p>我们也可以在指定的列插入数据。</p> <p>下面的 SQL 语句将插入一个新行，但是只在 "CustomerName"、"City" 和 "Country" 列插入数据（CustomerID 字段会自动更新）：</p> <div class="example margin-b-10"> <h2 class="example">实例</h2> <pre><div class="example_code notranslate"> INSERT INTO Customers (CustomerName, City, Country)<br/> VALUES ('Cardinal', 'Stavanger', 'Norway'); </div></pre> </div> <p>现在，选自 "Customers" 表的数据如下所示：</p> <table class="reference notranslate">
<tr>
<th>CustomerID</th> <th>CustomerName</th> <th>ContactName</th> <th>Address</th> <th>City</th> <th>PostalCode</th> <th>Country</th> </tr>
<tr>
<td>87</td> <td>Wartian Herkku</td> <td>Pirkko Koskitalo</td> <td>Torikatu 38</td> <td>Oulu</td> <td>90110</td> <td>Finland</td> </tr>
<tr>
<td>88</td> <td>Wellington Importadora</td> <td>Paula Parente</td> <td>Rua do Mercado, 12</td> <td>Resende</td> <td>08737-363</td> <td>Brazil</td> </tr>
<tr>
<td>89</td> <td>White Clover Markets</td> <td>Karl Jablonski</td> <td>305 - 14th Ave. S. Suite 3B</td> <td>Seattle</td> <td>98128</td> <td>USA</td> </tr>
<tr>
<td>90<br/><br/>
</td> <td>Wilman Kala</td> <td>Matti Karttunen</td> <td>Keskuskatu 45</td> <td>Helsinki</td> <td>21240</td> <td>Finland</td> </tr>
<tr>
<td>91<br/><br/>
</td> <td>Wolski</td> <td>Zbyszek</td> <td>ul. Filtrowa 68</td> <td>Walla</td> <td>01-012</td> <td>Poland</td> </tr>
<tr>
<td>92</td> <td>Cardinal</td> <td>null</td> <td>null </td> <td>Stavanger</td> <td>null</td> <td>Norway</td> </tr>
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