Detailed explanation of Yii2 query where condition assembly-PHP Tutorial-php.cn

Table of Contents

1 Syntax

3.1 对比

3.2 and

3.3 or

3.4 not

3.5 between和not between

3.6 in和not in

3.7 like

3.8 exists

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Detailed explanation of Yii2 query where condition assembly

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Mar 27, 2018 pm 01:41 PM

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<p>After becoming familiar with the query conditions of Yii2, use Active Record is very convenient for querying data. Below we introduce the assembly method of conditions in the where() method. </p> <h2 id="Syntax">1 Syntax</h2> <p style="white-space:pre-wrap;">Yii2 uses the <code class="hljs bash" style="font-family:Consolas, 'Liberation Mono', Menlo, Courier, monospace;font-size:12px;padding:.3em;color:rgb(51,51,51);background-color:rgb(247,247,247);display:inline;line-height:1.65;"><span class="hljs-built_in">where</span>()</code> method (of course there are other methods) to implement conditional filtering, syntax: </p><div class="code" style="position:relative; padding:0px; margin:0px;"><pre class='brush:php;toolbar:false;'>public $this where ( $condition, $params = [] )</pre><div class="contentsignin">Copy after login</div></div> <p style="white-space:pre-wrap;"><code class="hljs bash" style="font-family:Consolas, 'Liberation Mono', Menlo, Courier, monospace;font-size:12px;padding:.3em;color:rgb(51,51,51);background-color:rgb(247,247,247);display:inline;line-height:1.65;"><span class="hljs-variable" style="color:rgb(223,80,0);">$params</span></code> is an optional parameter, specifying the value to be bound to the query. </p><p style="white-space:pre-wrap;"><code class="hljs bash" style="font-family:Consolas, 'Liberation Mono', Menlo, Courier, monospace;font-size:12px;padding:.3em;color:rgb(51,51,51);background-color:rgb(247,247,247);display:inline;line-height:1.65;"><span class="hljs-variable" style="color:rgb(223,80,0);">$condition</span></code> is a required parameter, <code class="hljs bash" style="font-family:Consolas, 'Liberation Mono', Menlo, Courier, monospace;font-size:12px;padding:.3em;color:rgb(51,51,51);background-color:rgb(247,247,247);display:inline;line-height:1.65;"><span class="hljs-variable" style="color:rgb(223,80,0);">$condition</span></code> can be a string (such as <code class="hljs bash" style="font-family:Consolas, 'Liberation Mono', Menlo, Courier, monospace;font-size:12px;padding:.3em;color:rgb(51,51,51);background-color:rgb(247,247,247);display:inline;line-height:1.65;"><span class="hljs-string" style="color:rgb(223,80,0);">'id=1'</span></code>) or array. When </p><p style="white-space:pre-wrap;"><code class="hljs bash" style="font-family:Consolas, 'Liberation Mono', Menlo, Courier, monospace;font-size:12px;padding:.3em;color:rgb(51,51,51);background-color:rgb(247,247,247);display:inline;line-height:1.65;"><span class="hljs-variable" style="color:rgb(223,80,0);">$condition</span></code> is an array, there are two formats: </p><ul style="margin-top:0px;list-style-position:inside;" class=" list-paddingleft-2"><li><p>Hash format: <code class="hljs json" style="font-family:Consolas, 'Liberation Mono', Menlo, Courier, monospace;font-size:12px;padding:.3em;color:rgb(51,51,51);background-color:rgb(247,247,247);display:inline;line-height:1.65;white-space:pre-wrap;">[' column1' => value1, 'column2' => value2, ...]</code></p></li><li>##Operator format: <p>[operator, operand1, operand2, ...]<code class="hljs json" style="font-family:Consolas, 'Liberation Mono', Menlo, Courier, monospace;font-size:12px;padding:.3em;color:rgb(51,51,51);background-color:rgb(247,247,247);display:inline;line-height:1.65;white-space:pre-wrap;"></code></p></li></ul>2 Hash format<h2 style="font-family:'Microsoft YaHei UI Light', SimHei, SimSun, sans-serif;line-height:1.1;color:rgb(66,139,209);"></h2>Usually, the query condition in hash format generates an SQL statement like this:<p style="white-space:pre-wrap;"> <div class="code" style="position:relative; padding:0px; margin:0px;"><pre class='brush:php;toolbar:false;'>column1=value1 AND column2=value2 AND ...</pre><div class="contentsignin">Copy after login</div></div></p>If a value is an array, an <p style="white-space:pre-wrap;">IN<code class="hljs" style="font-family:Consolas, 'Liberation Mono', Menlo, Courier, monospace;font-size:12px;padding:.3em;color:rgb(51,51,51);background-color:rgb(247,247,247);display:inline;line-height:1.65;"> statement will be generated. </code></p>If a value is <p style="white-space:pre-wrap;"><code class="hljs coffeescript" style="font-family:Consolas, 'Liberation Mono', Menlo, Courier, monospace;font-size:12px;padding:.3em;color:rgb(51,51,51);background-color:rgb(247,247,247);display:inline;line-height:1.65;">null<span class="hljs-literal" style="color:rgb(0,134,179);"></span>, </code>IS<code class="hljs cpp" style="font-family:Consolas, 'Liberation Mono', Menlo, Courier, monospace;font-size:12px;padding:.3em;color:rgb(51,51,51);background-color:rgb(247,247,247);display:inline;line-height:1.65;">NULL<span class="hljs-literal" style="color:rgb(0,134,179);"></span> will be used to generate the statement. </code></p>Example: <p style="white-space:pre-wrap;"><div class="code" style="position:relative; padding:0px; margin:0px;"><pre class='brush:php;toolbar:false;'>['type' => 1, 'status' => 2] // 生成：(type = 1) AND (status = 2)['id' => [1, 2, 3], 'status' => 2] // 生成：(id IN (1, 2, 3)) AND (status = 2)['status' => null] // 生成：status IS NULL</pre><div class="contentsignin">Copy after login</div></div></p>3 Operator format<h2 style="font-family:'Microsoft YaHei UI Light', SimHei, SimSun, sans-serif;line-height:1.1;color:rgb(66,139,209);"></h2>In operator format, Yii will generate SQL statements based on the specified operator. <p style="white-space:pre-wrap;"><p style="white-space:pre-wrap;">运算符有：<code class="hljs coffeescript" style="font-family:Consolas, 'Liberation Mono', Menlo, Courier, monospace;font-size:12px;padding:.3em;color:rgb(51,51,51);background-color:rgb(247,247,247);display:inline;line-height:1.65;"><span class="hljs-keyword" style="color:rgb(167,29,93);">and</span></code>、<code class="hljs coffeescript" style="font-family:Consolas, 'Liberation Mono', Menlo, Courier, monospace;font-size:12px;padding:.3em;color:rgb(51,51,51);background-color:rgb(247,247,247);display:inline;line-height:1.65;"><span class="hljs-keyword" style="color:rgb(167,29,93);">or</span></code>、<code class="hljs coffeescript" style="font-family:Consolas, 'Liberation Mono', Menlo, Courier, monospace;font-size:12px;padding:.3em;color:rgb(51,51,51);background-color:rgb(247,247,247);display:inline;line-height:1.65;"><span class="hljs-keyword" style="color:rgb(167,29,93);">not</span></code>、<code class="hljs" style="font-family:Consolas, 'Liberation Mono', Menlo, Courier, monospace;font-size:12px;padding:.3em;color:rgb(51,51,51);background-color:rgb(247,247,247);display:inline;line-height:1.65;">between</code>、<code class="hljs coffeescript" style="font-family:Consolas, 'Liberation Mono', Menlo, Courier, monospace;font-size:12px;padding:.3em;color:rgb(51,51,51);background-color:rgb(247,247,247);display:inline;line-height:1.65;"><span class="hljs-keyword" style="color:rgb(167,29,93);">not</span> between</code>、<code class="hljs bash" style="font-family:Consolas, 'Liberation Mono', Menlo, Courier, monospace;font-size:12px;padding:.3em;color:rgb(51,51,51);background-color:rgb(247,247,247);display:inline;line-height:1.65;"><span class="hljs-keyword" style="color:rgb(167,29,93);">in</span></code>、<code class="hljs coffeescript" style="font-family:Consolas, 'Liberation Mono', Menlo, Courier, monospace;font-size:12px;padding:.3em;color:rgb(51,51,51);background-color:rgb(247,247,247);display:inline;line-height:1.65;"><span class="hljs-keyword" style="color:rgb(167,29,93);">not</span><span class="hljs-keyword" style="color:rgb(167,29,93);">in</span></code>、<code class="hljs" style="font-family:Consolas, 'Liberation Mono', Menlo, Courier, monospace;font-size:12px;padding:.3em;color:rgb(51,51,51);background-color:rgb(247,247,247);display:inline;line-height:1.65;">like</code>、<code class="hljs coffeescript" style="font-family:Consolas, 'Liberation Mono', Menlo, Courier, monospace;font-size:12px;padding:.3em;color:rgb(51,51,51);background-color:rgb(247,247,247);display:inline;line-height:1.65;"><span class="hljs-keyword" style="color:rgb(167,29,93);">or</span> like</code>、<code class="hljs coffeescript" style="font-family:Consolas, 'Liberation Mono', Menlo, Courier, monospace;font-size:12px;padding:.3em;color:rgb(51,51,51);background-color:rgb(247,247,247);display:inline;line-height:1.65;"><span class="hljs-keyword" style="color:rgb(167,29,93);">not</span> like</code>、<code class="hljs coffeescript" style="font-family:Consolas, 'Liberation Mono', Menlo, Courier, monospace;font-size:12px;padding:.3em;color:rgb(51,51,51);background-color:rgb(247,247,247);display:inline;line-height:1.65;"><span class="hljs-keyword" style="color:rgb(167,29,93);">or</span><span class="hljs-keyword" style="color:rgb(167,29,93);">not</span> like</code>、<code class="hljs perl" style="font-family:Consolas, 'Liberation Mono', Menlo, Courier, monospace;font-size:12px;padding:.3em;color:rgb(51,51,51);background-color:rgb(247,247,247);display:inline;line-height:1.65;"><span class="hljs-keyword" style="color:rgb(167,29,93);">exists</span></code>、<code class="hljs perl" style="font-family:Consolas, 'Liberation Mono', Menlo, Courier, monospace;font-size:12px;padding:.3em;color:rgb(51,51,51);background-color:rgb(247,247,247);display:inline;line-height:1.65;"><span class="hljs-keyword" style="color:rgb(167,29,93);">not</span><span class="hljs-keyword" style="color:rgb(167,29,93);">exists</span></code>、<code class="hljs" style="font-family:Consolas, 'Liberation Mono', Menlo, Courier, monospace;font-size:12px;padding:.3em;color:rgb(51,51,51);background-color:rgb(247,247,247);display:inline;line-height:1.65;">></code>、<code class="hljs" style="font-family:Consolas, 'Liberation Mono', Menlo, Courier, monospace;font-size:12px;padding:.3em;color:rgb(51,51,51);background-color:rgb(247,247,247);display:inline;line-height:1.65;"><</code>、<code class="hljs" style="font-family:Consolas, 'Liberation Mono', Menlo, Courier, monospace;font-size:12px;padding:.3em;color:rgb(51,51,51);background-color:rgb(247,247,247);display:inline;line-height:1.65;">=</code>、<code class="hljs" style="font-family:Consolas, 'Liberation Mono', Menlo, Courier, monospace;font-size:12px;padding:.3em;color:rgb(51,51,51);background-color:rgb(247,247,247);display:inline;line-height:1.65;">>=</code>、<code class="hljs" style="font-family:Consolas, 'Liberation Mono', Menlo, Courier, monospace;font-size:12px;padding:.3em;color:rgb(51,51,51);background-color:rgb(247,247,247);display:inline;line-height:1.65;"><=</code>、<code class="hljs diff" style="font-family:Consolas, 'Liberation Mono', Menlo, Courier, monospace;font-size:12px;padding:.3em;color:rgb(51,51,51);background-color:rgb(247,247,247);display:inline;line-height:1.65;"><span class="hljs-addition" style="color:rgb(85,165,50);background-color:rgb(234,255,234);">!=</span></code>等。</p><h3 id="对比">3.1 对比</h3><div class="code" style="position:relative; padding:0px; margin:0px;"><pre class='brush:php;toolbar:false;'>['>', 'id', 1] // 生成：id > 1['<', 'id', 100] // 生成：id < 100['=', 'id', 10] // 生成：id = 10['>=', 'id', 1] // 生成：id >= 1['<=', 'id', 100] // 生成：id != 10</pre><div class="contentsignin">Copy after login</div></div><p style="white-space:pre-wrap;">具体生成的SQL语句，运算符<code class="hljs objectivec" style="font-family:Consolas, 'Liberation Mono', Menlo, Courier, monospace;font-size:12px;padding:.3em;color:rgb(51,51,51);background-color:rgb(247,247,247);display:inline;line-height:1.65;"><span class="hljs-keyword" style="color:rgb(167,29,93);">id</span></code>会自动加上反斜杠引号<code class="hljs" style="font-family:Consolas, 'Liberation Mono', Menlo, Courier, monospace;font-size:12px;padding:.3em;color:rgb(51,51,51);background-color:rgb(247,247,247);display:inline;line-height:1.65;">`</code>，运算数会自动转义。</p><h3 id="and">3.2 and</h3><div class="code" style="position:relative; padding:0px; margin:0px;"><pre class='brush:php;toolbar:false;'>['and', 'id' => 1, 'id' => 2] // 生成：id=1 AND id=2['and', 'id=1', 'id=2'] // 生成：id=1 AND id=2['and', 'type=1', ['or', 'id=1', 'id=2']] // 生成：type=1 AND (id=1 OR id=2)</pre><div class="contentsignin">Copy after login</div></div><p style="white-space:pre-wrap;">在第2条和第3条语句中，列名称和搜索值未用键值关系指定，所以生成的SQL不会添加引号，也不会转义。</p><h3 id="or">3.3 or</h3><div class="code" style="position:relative; padding:0px; margin:0px;"><pre class='brush:php;toolbar:false;'>['or', ['type' => [7, 8, 9]], ['id' => [1, 2, 3]]] // 生成：(type IN (7, 8, 9) OR (id IN (1, 2, 3)))</pre><div class="contentsignin">Copy after login</div></div><h3 id="not">3.4 not</h3><div class="code" style="position:relative; padding:0px; margin:0px;"><pre class='brush:php;toolbar:false;'>['not', ['attribute' => null]] // 生成：NOT (attribute IS NULL)</pre><div class="contentsignin">Copy after login</div></div><h3 id="between和not-between">3.5 between和not between</h3><div class="code" style="position:relative; padding:0px; margin:0px;"><pre class='brush:php;toolbar:false;'>['between', 'id', 1, 10] // 生成：id BETWEEN 1 AND 10['not between', 'id', 1, 10] // 生成：id NOT BETWEEN 1 AND 10</pre><div class="contentsignin">Copy after login</div></div><p style="white-space:pre-wrap;">运算符后面的运算数1为数据表<span style="font-weight:bolder;">列名称</span>，运算数2和运算数3分别为列值范围的<span style="font-weight:bolder;">最小值</span>和<span style="font-weight:bolder;">最大值</span>。</p><h3 id="in和not-in">3.6 in和not in</h3><div class="code" style="position:relative; padding:0px; margin:0px;"><pre class='brush:php;toolbar:false;'>['in', 'id', [1, 2, 3]] // 生成：id IN (1, 2, 3)['not in', 'id', [1, 2, 3]] // 生成：id NOT IN (1, 2, 3)</pre><div class="contentsignin">Copy after login</div></div><p style="white-space:pre-wrap;">运算符后面的<code class="hljs" style="font-family:Consolas, 'Liberation Mono', Menlo, Courier, monospace;font-size:12px;padding:.3em;color:rgb(51,51,51);background-color:rgb(247,247,247);display:inline;line-height:1.65;">运算数1</code>为列名称或DB表达式，<code class="hljs" style="font-family:Consolas, 'Liberation Mono', Menlo, Courier, monospace;font-size:12px;padding:.3em;color:rgb(51,51,51);background-color:rgb(247,247,247);display:inline;line-height:1.65;">运算数2</code>为数组，指定列值所在的范围。</p><p style="white-space:pre-wrap;">这个方法会为值添加引号，并正确转义。</p><p style="white-space:pre-wrap;">要生成混合<code class="hljs" style="font-family:Consolas, 'Liberation Mono', Menlo, Courier, monospace;font-size:12px;padding:.3em;color:rgb(51,51,51);background-color:rgb(247,247,247);display:inline;line-height:1.65;">IN</code>条件，列名和列值都设置为数组，并且用列名为列值指定下标：</p><div class="code" style="position:relative; padding:0px; margin:0px;"><pre class='brush:php;toolbar:false;'>['in', ['id', 'name'], [['id' => 1, 'name' => 'foo'], ['id' => 2, 'name' => 'bar']]] // 生成：(`id`, `name`) IN ((1, 'foo'), (2, 'bar'))</pre><div class="contentsignin">Copy after login</div></div><p style="white-space:pre-wrap;">另外，还可以用子查询作为<code class="hljs" style="font-family:Consolas, 'Liberation Mono', Menlo, Courier, monospace;font-size:12px;padding:.3em;color:rgb(51,51,51);background-color:rgb(247,247,247);display:inline;line-height:1.65;">IN</code>条件的值，如下：</p><div class="code" style="position:relative; padding:0px; margin:0px;"><pre class='brush:php;toolbar:false;'>['in', 'user_id', (new Query())->select('id')->from('users')->where(['active' => 1])]</pre><div class="contentsignin">Copy after login</div></div><h3 id="like">3.7 like</h3><div class="code" style="position:relative; padding:0px; margin:0px;"><pre class='brush:php;toolbar:false;'>['like', 'name', 'tester'] // 生成：name LIKE '%tester%'['like', 'name', ['test', 'sample']] // 生成：name LIKE '%test%' AND name LIKE '%sample%'['like', 'name', '%tester', false] // 生成：name LIKE '%tester' // 这是自定义查询方式，要传入值为false的运算数3，并且自行添加%</pre><div class="contentsignin">Copy after login</div></div><p style="white-space:pre-wrap;"><span style="color:rgb(119,119,119);font-family:'courier new';"><span style="background-color:rgb(238,238,238);">运算数</span></span>后面的运算数1为列名称或DB表达式，运算数2为字符串或数组，指定列值查询条件。</p><p style="white-space:pre-wrap;">这个方法会为值添加引号，并正确转义。</p><p style="white-space:pre-wrap;"><code class="hljs coffeescript" style="font-family:Consolas, 'Liberation Mono', Menlo, Courier, monospace;font-size:12px;padding:.3em;color:rgb(51,51,51);background-color:rgb(247,247,247);display:inline;line-height:1.65;"><span class="hljs-keyword" style="color:rgb(167,29,93);">or</span> like</code>、<code class="hljs coffeescript" style="font-family:Consolas, 'Liberation Mono', Menlo, Courier, monospace;font-size:12px;padding:.3em;color:rgb(51,51,51);background-color:rgb(247,247,247);display:inline;line-height:1.65;"><span class="hljs-keyword" style="color:rgb(167,29,93);">not</span> like</code>、<code class="hljs coffeescript" style="font-family:Consolas, 'Liberation Mono', Menlo, Courier, monospace;font-size:12px;padding:.3em;color:rgb(51,51,51);background-color:rgb(247,247,247);display:inline;line-height:1.65;"><span class="hljs-keyword" style="color:rgb(167,29,93);">or</span><span class="hljs-keyword" style="color:rgb(167,29,93);">not</span> like</code>用法和<code class="hljs" style="font-family:Consolas, 'Liberation Mono', Menlo, Courier, monospace;font-size:12px;padding:.3em;color:rgb(51,51,51);background-color:rgb(247,247,247);display:inline;line-height:1.65;">like</code>一样。</p><div class="code" style="position:relative; padding:0px; margin:0px;"><pre class='brush:php;toolbar:false;'>['or like', 'name', ['test', 'sample']] // 生成：name LIKE '%test%' OR name LIKE '%sample%'['not like', 'name', 'tester'] // 生成：name NOT LIKE '%tester%'['or not like', 'name', ['test', 'sample']] // 生成：name NOT LIKE '%test%' OR name NOT LIKE '%sample%'</pre><div class="contentsignin">Copy after login</div></div><h3 id="exists">3.8 exists</h3><div class="code" style="position:relative; padding:0px; margin:0px;"><pre class='brush:php;toolbar:false;'>['exists', (new Query())->select('id')->from('users')->where(['active' => 1])] // 生成：EXISTS (SELECT "id" FROM "users" WHERE "active"=1)</pre><div class="contentsignin">Copy after login</div></div><p style="white-space:pre-wrap;"><code class="hljs perl" style="font-family:Consolas, 'Liberation Mono', Menlo, Courier, monospace;font-size:12px;padding:.3em;color:rgb(51,51,51);background-color:rgb(247,247,247);display:inline;line-height:1.65;"><span class="hljs-keyword" style="color:rgb(167,29,93);">not</span><span class="hljs-keyword" style="color:rgb(167,29,93);">exists</span></code>用法和<code class="hljs perl" style="font-family:Consolas, 'Liberation Mono', Menlo, Courier, monospace;font-size:12px;padding:.3em;color:rgb(51,51,51);background-color:rgb(247,247,247);display:inline;line-height:1.65;"><span class="hljs-keyword" style="color:rgb(167,29,93);">exists</span></code>一样。</p> <p style="white-space: pre-wrap;"> 相关推荐：</p> <p style="white-space: pre-wrap;"><a href="http://www.php.cn/php-weizijiaocheng-330818.html" target="_self">Yii20中文开发向导——Where条件查询全解析</a></p>

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From beginner to proficient: Master the skills of using is and where selectors Introduction: In the process of data processing and analysis, the selector is a very important tool. Through selectors, we can extract the required data from the data set according to specific conditions. This article will introduce the usage skills of is and where selectors to help readers quickly master the powerful functions of these two selectors. 1. Use of the is selector The is selector is a basic selector that allows us to select the data set based on given conditions.

A few selected CTF exercises will help you learn the yii2 framework! Feb 23, 2022 am 10:33 AM

This article will introduce you to the yii2 framework, share a few CTF exercises, and use them to learn the yii2 framework. I hope it will be helpful to everyone.

The basic usage of mysql left join and the difference between on and where Jun 02, 2023 pm 11:54 PM

Preface When we write SQL statements, we cannot avoid using connection keywords, such as inner connections and outer connections. There are many types. I will post here a picture I found elsewhere: I think this picture is very detailed. It shows the common link types in SQL statements. Take leftjoin in this article as an example. It is available online. As defined: the LEFTJOIN keyword will return all rows from the left table, even if there are no matching rows in the right table. In fact, literally speaking, leftjoin is relatively easy to understand, but there are still some problems during use. For example, if the condition is after on and after where, their results are completely different. Let's go from shallow to deep

How to install Redis extension using YII2 framework May 26, 2023 pm 06:41 PM

1. You need to download the windows version of the master branch of yii2-redis with composer 2. Unzip and copy it to vendor/yiisoft 3. Add 'yiisoft/yii2-redis'=>array('name'=>'yiisoft to extensions.php under yiisoft /yii2-redis','version'=>'2.0.

Usage analysis of Where method in Laravel collection Mar 09, 2024 pm 06:51 PM

Laravel is a popular PHP development framework that provides rich and convenient functions. Collection is one of the very important data structures in Laravel. The collection class provides many powerful methods, one of which is the where method. This article will use specific code examples to analyze the usage of the where method in Laravel collections. 1. Create a collection First, we need to create a collection that contains some data. Can

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