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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。 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