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db\ColumnSchemaBuilder $db

$db public property (available since version 2.0.8)

The current database connection. It is used mainly to escape strings safely when building the final column schema string.

public yii\db\Connection $db = null

Links:

http://www.yiiframework.com/doc-2.0/yii-db-columnschemabuilder.html#$db-detail

doc_Yii

2016-10-30 16:57:08

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