相关疑难解决方法(0)

SQLite v3.7.5

有没有一种方法,使SQLite的外键与cascade delete默认启用？给出以下示例:

CREATE TABLE [Parent] (
[ParentId] INTEGER  NOT NULL PRIMARY KEY AUTOINCREMENT,
[Name] VARCHAR(50)  UNIQUE NOT NULL
);

CREATE TABLE [Child] (
[ChildId] INTEGER  PRIMARY KEY AUTOINCREMENT NOT NULL,
[ParentId] INTEGER  NOT NULL,
[Name] VARCHAR(50)  NOT NULL,
FOREIGN KEY(ChildId) REFERENCES Child(ParentId) ON DELETE CASCADE
);

我能够启用级联删除的唯一方法是PRAGMA foreign_keys = true在事务之前执行命令:

using( var conn = new SQLiteConnection( _conn ) )
{
    conn.Open();
    var pragma = new SQLiteCommand( "PRAGMA foreign_keys = true;", conn ); …