实体框架多列

本文关键字：框架 实体 | 更新日期: 2023-09-27 18:10:48

在sqlcommand中我有这个:

SELECT * 
FROM cliente c
    LEFT JOIN abono a on
        c.idcliente = a.idcliente
        and (a.estatus = 1 or a.estatus = null)
    LEFT JOIN usuario u on
        a.creadopor = u.idusuario
WHERE c.estatus = 1

我们知道这个和这个是不一样的:

SELECT * 
FROM cliente c
     LEFT JOIN abono a on
         c.idcliente = a.idcliente
     LEFT JOIN usuario u on
         a.creadopor = u.idusuario
WHERE c.estatus=1
      and (a.estatus = 1 or a.estatus = null)

如何在实体框架中进行第一次查询?

实体框架中的第二个查询是 
from c in Conexion.conexion.conect.cliente
join a in Conexion.conexion.conect.abono
on c.idcliente equals a.idcliente into alj
from a in alj.DefaultIfEmpty()
join u in Conexion.conexion.conect.usuario
on a.creadopor equals u.idusuario into ulj
from u in ulj.DefaultIfEmpty()
where c.estatus == 1
&& (a.estatus == 1 || a.estatus == null)

但是我无法得到第一个查询

实体框架多列

效果很好:

from c in Conexion.conexion.conect.cliente
join a in Conexion.conexion.conect.abono.Where(x.estatus == 1 || x.estatus == null)
on c.idcliente equals a.idcliente into alj
from a in alj.DefaultIfEmpty()
join u in Conexion.conexion.conect.usuario
on a.creadopor equals u.idusuario into ulj
from u in ulj.DefaultIfEmpty()
where c.estatus == 1
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