[英]How to create a query between two tables in an ASP.NET MVC web application?
I'm having trouble creating a query between my tables 'utente' and 'indirizzo_residenza' that will do: 我在创建表“ utente”和“ indirizzo_residenza”之间的查询时遇到了麻烦:
SELECT *
FROM utente, indirizzo_residenza
WHERE utente.idutente = indirizzo_residenza.idutente;
Right now I can only query one table or the other and return it as OkObjectResult
object 现在,我只能查询一个表或另一个表,并将其作为OkObjectResult
对象返回
namespace WebApplication1.Controllers
{
[Route("api/[controller]")]
[ApiController]
public class UtentesController : ControllerBase
{
private readonly resdataContext _context;
public UtentesController(resdataContext context)
{
_context = context;
}
// GET: api/Utentes/GetUtente
[HttpGet("[action]")]
public async Task<IActionResult> GetUtente()
{
if (!ModelState.IsValid)
{
return BadRequest(ModelState);
}
var address = _context.IndirizzoResidenza.FromSql("Select * from indirizzo_residenza");
var users = _context.Utente.FromSql("SELECT * FROM utente");
/* string q = "SELECT * from utente,indirizzo_residenza where utente.idutente=indirizzo_residenza=idutente;";
*/
if (utente == null)
{
return NotFound();
}
return Ok(users);
}
}
}
How can I manage to merge those two queries? 我如何设法合并这两个查询?
Thanks 谢谢
Your solution is not the recommended way of joining tables. 您的解决方案不是推荐的联接表方式。 So, I will propose you to use the INNER JOIN: 因此,我建议您使用INNER JOIN:
SELECT *
FROM utente
INNER JOIN indirizzo_residenza
ON utente.idutente = indirizzo_residenza.idutente;
声明:本站的技术帖子网页,遵循CC BY-SA 4.0协议,如果您需要转载,请注明本站网址或者原文地址。任何问题请咨询:yoyou2525@163.com.