OrmLite 按多列加入 table

Question

使用 OrmLite 如何通过多列连接 table？

我有 Notes table 可以包含 QutoeHeader 或 OrderHeader 的数据，所以我尝试像这样加入和使用 SelectMulti()：

var userSpecificQuery =
    _db
        .From<Customer>()
        .Where(x => x.SalesRepresentativeId == userId)
        .LeftJoin<Customer, QuoteHeader>((c, q) => c.Id == q.CustomerId)
        .LeftJoin<Customer, OrderHeader>((c, o) => c.Id == o.CustomerId)
        .LeftJoin<OrderHeader, QuoteHeader, Notes>((oh,qh, n) => oh.Id == n.OrderId || qh.Id == n.QuoteId)
    ;


var userSpecificRecords = 
    _db.SelectMulti<Customer, QuoteHeader, OrderHeader, Notes>(userSpecificQuery);

但是我得到错误：

table name "quote_header" specified more than once

我想加入所有匹配 OrderId 或 QuoteId 的记录。我尝试了几种不同的方法并得到了同样的错误。这可能吗？

编辑：

这里是笔记模型

public class Notes : BaseModel
{
    [AutoIncrement]
    public long Id { get; set; }
    [ForeignKey(typeof(QuoteHeader))]
    public long? QuoteId { get; set; }
    [ForeignKey(typeof(OrderHeader))]
    public long? OrderId { get; set; }
    public string NoteText { get; set; }
}

Answer 1

与其多次加入 QuoteHeader，不如将条件移动到 Where:

db.From<Customer>()
  .Where(x => x.SalesRepresentativeId == userId)
  .LeftJoin<Customer, QuoteHeader>((c, q) => c.Id == q.CustomerId)
  .LeftJoin<Customer, OrderHeader>((c, o) => c.Id == o.CustomerId)
  .LeftJoin<OrderHeader, Notes>((oh, n) => oh.Id == n.OrderId)
  .Where<OrderHeader,QuoteHeader,Notes>((oh,qh,n) => oh.OrderId != null || qh.Id == n.QuoteId)

OrmLite 按多列加入 table

OrmLite join table by multiple columns

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