Question

外键约束失败使用SQLite和Entity Framework Core

我在表格中有关系

[Table("organizations")]
public class Organizations
{
    [Column("id")]
    public int Id { get; set; }

    [Column("parent_id")]
    [ForeignKey("id")]
    public int? ParentId { get; set; }

    [Column("person_id")]
    public int? PersonId { get; set; }
 }


public DbSet<Organizations> Organizations { get; set; }

using (var db = new SQLiteDbContext($"Filename={dbPath};"))
{
    db.Database.ExecuteSqlCommand("PRAGMA foreign_keys=OFF;");
    db.Database.ExecuteSqlCommand("PRAGMA ignore_check_constraints=true;");
    db.Organizations.AddRange(organizationsResult.Rows);
}

我从Sqlite数据库收到错误：

{“SQLite错误19：'FOREIGN KEY约束失败'”}

Answer 1

如果连接关闭，PRAGMA会失效。您需要在之前和之后调用db.Database.OpenConnection()和CloseConnection()来延长连接的生命周期。

您还可以致电optionsBiulder.UseSqlite(connectionString, x => x.SuppressForeignKeyEnforcement())以防止EF在每个连接上自动转换外键。

如何忽略Entity Framework Core SQLite数据库中的外键约束？

1 个答案: