没有命名空间的类 yii yii\base yii\behaviors yii\caching yii\captcha yii\console yii\console\controllers yii\console\widgets yii\data yii\db yii\db\conditions yii\db\cubrid yii\db\cubrid\conditions yii\db\mssql yii\db\mssql\conditions yii\db\mysql yii\db\oci yii\db\oci\conditions yii\db\pgsql yii\db\sqlite yii\db\sqlite\conditions yii\di yii\filters yii\filters\auth yii\grid yii\helpers yii\i18n yii\log yii\mail yii\mutex yii\rbac yii\rest yii\test yii\validators yii\web yii\widgets

Class yii\db\CheckConstraint

继承yii\db\CheckConstraint » yii\db\Constraint » yii\base\BaseObject
实现yii\base\Configurable
可用版本自2.0.13
源码 https://github.com/yiichina/yii2/blob/api/framework/db/CheckConstraint.php

CheckConstraint 表示表 CHECK 约束的元数据。

公共属性

隐藏继承的属性

属性类型描述被定义在
$columnNames string[]|null 约束所属的列名列表。 yii\db\Constraint
$expression string CHECK 约束的 SQL。 yii\db\CheckConstraint
$name string|null 约束名称。 yii\db\Constraint

公共方法

隐藏继承的方法

方法描述被定义在
__call() Calls the named method which is not a class method. yii\base\BaseObject
__construct() Constructor. yii\base\BaseObject
__get() Returns the value of an object property. yii\base\BaseObject
__isset() Checks if a property is set, i.e. defined and not null. yii\base\BaseObject
__set() Sets value of an object property. yii\base\BaseObject
__unset() Sets an object property to null. yii\base\BaseObject
canGetProperty() Returns a value indicating whether a property can be read. yii\base\BaseObject
canSetProperty() Returns a value indicating whether a property can be set. yii\base\BaseObject
className() Returns the fully qualified name of this class. yii\base\BaseObject
hasMethod() Returns a value indicating whether a method is defined. yii\base\BaseObject
hasProperty() Returns a value indicating whether a property is defined. yii\base\BaseObject
init() Initializes the object. yii\base\BaseObject

属性详情

$expression 公共 属性

CHECK 约束的 SQL。

public string $expression null