SQL 语句在 laravel 中执行需要 26 秒，在 phpmyadmin 中需要 0.0075 秒答案

【问题标题】：SQL statement takes 26 seconds in laravel to execute, at phpmyadmin takes .0075 secondsSQL 语句在 laravel 中执行需要 26 秒，在 phpmyadmin 中需要 0.0075 秒
【发布时间】：2020-05-23 23:27:51
【问题描述】：

我有一个涉及 6 个表的 sql 语句，在 laravel 中执行它需要 26 秒，但在 phpmyadmin 中执行相同的 sql 语句大约需要 0.0075 到 0.0089 秒。

这是我在 laravel 中的代码：

use DB;    
$partidas = DB::select("SELECT A.Patente, A.Pedimento, A.SeccionAduanera, A.Fraccion, A.SecuenciaFraccion, A.ValorComercial, A.PrecioUnitario, A.CantidadUMComercial, A.UnidadMedidaComercial, A.CantidadUMTarifa, A.UnidadMedidaTarifa, A.MetodoValorizacion, A.PaisOrigenDestino, A.PaisCompradorVendedor,  
                                                B.ClavePermiso, B.NumeroPermiso, 
                                                C.ClaveCaso, C.IdentificadorCaso, C.ComplementoCaso, 
                                                D.ClaveContribucion, D.FormaPago, D.ImportePago, 
                                                E.TasaContribucion, E.TipoTasa, 
                                                F.Observaciones
                                        FROM `551` A
                                        INNER JOIN `553` B ON B.Fraccion = A.Fraccion
                                                AND (A.SecuenciaFraccion = B.SecuenciaFraccion)
                                                AND (A.auditoria_id = 4 AND B.auditoria_id = 4)
                                                AND (A.Patente = '3452' AND B.Patente = '3452')
                                                AND (A.Pedimento = '0000180' AND B.Pedimento = '0000180') 
                                                AND (A.SeccionAduanera = '430' AND B.SeccionAduanera = '430')
                                        INNER JOIN `554` C ON C.Fraccion = A.Fraccion 
                                                AND (A.SecuenciaFraccion = C.SecuenciaFraccion)
                                                AND (A.auditoria_id = 4 AND C.auditoria_id = 4)
                                                AND (A.Patente = '3452' AND C.Patente = '3452')
                                                AND (A.Pedimento = '0000180' AND C.Pedimento = '0000180') 
                                                AND (A.SeccionAduanera = '430' AND C.SeccionAduanera = '430')
                                        INNER JOIN `557` D ON D.Fraccion = A.Fraccion 
                                                AND (A.SecuenciaFraccion = D.SecuenciaFraccion)
                                                AND (A.auditoria_id = 4 AND D.auditoria_id = 4)
                                                AND (A.Patente = '3452' AND D.Patente = '3452')
                                                AND (A.Pedimento = '0000180' AND D.Pedimento = '0000180') 
                                                AND (A.SeccionAduanera = '430' AND D.SeccionAduanera = '430')
                                        INNER JOIN `556` E ON E.Fraccion = A.Fraccion 
                                                AND (A.SecuenciaFraccion = E.SecuenciaFraccion)
                                                AND (A.auditoria_id = 4 AND E.auditoria_id = 4)
                                                AND (A.Patente = '3452' AND E.Patente = '3452')
                                                AND (A.Pedimento = '0000180' AND E.Pedimento = '0000180') 
                                                AND (A.SeccionAduanera = '430' AND E.SeccionAduanera = '430')
                                        INNER JOIN `558` F ON F.Fraccion = A.Fraccion 
                                                AND (A.SecuenciaFraccion = F.SecuenciaFraccion)
                                                AND (A.auditoria_id = 4 AND F.auditoria_id = 4)
                                                AND (A.Patente = '3452' AND F.Patente = '3452')
                                                AND (A.Pedimento = '0000180' AND F.Pedimento = '0000180') 
                                                AND (A.SeccionAduanera = '430' AND F.SeccionAduanera = '430')
                                        ");
                dd($partidas);

我需要知道我是否可以用 eloquent 或其他方式发表声明以在 laravel 中获得更好的性能。

谢谢！

PD：英语不是我的母语，如有错误请见谅！

【问题讨论】：

当您构建一个名为 551 的表时，发生了根本性的错误
你能解释一下为什么你有相同的数据库来搜索相同的数据。
海关审核程序。海关发送文件（因此名称为 551、553 等）。并且在每个文件中都有特定的信息，在 551 个产品、553 个保险、554 个卖家等中。为了审计它，客户需要连接不同表中的某些数据。我在语句中输入的字段是连接表的字段。
您的 PHP 代码是远程的还是与数据库位于同一服务器中？我这么说是因为phpMyAdmin可能在同一个服务器，如果查询完全一样，可能是你的连接太慢了。
他们在同一个服务器（本地主机）

标签： php mysql laravel

【解决方案1】：

试试这个，它可能有时间像在你的 phpmyadmin 中一样

<?php

use DB;

$pdo = DB::connection()->getPdo();

$SQL = "SELECT A.Patente, A.Pedimento, A.SeccionAduanera, A.Fraccion, A.SecuenciaFraccion, A.ValorComercial, A.PrecioUnitario, A.CantidadUMComercial, A.UnidadMedidaComercial, A.CantidadUMTarifa, A.UnidadMedidaTarifa, A.MetodoValorizacion, A.PaisOrigenDestino, A.PaisCompradorVendedor,  
        B.ClavePermiso, B.NumeroPermiso, 
        C.ClaveCaso, C.IdentificadorCaso, C.ComplementoCaso, 
        D.ClaveContribucion, D.FormaPago, D.ImportePago, 
        E.TasaContribucion, E.TipoTasa, 
        F.Observaciones
    FROM `551` A
    INNER JOIN `553` B ON B.Fraccion = A.Fraccion
        AND (A.SecuenciaFraccion = B.SecuenciaFraccion)
        AND (A.auditoria_id = 4 AND B.auditoria_id = 4)
        AND (A.Patente = '3452' AND B.Patente = '3452')
        AND (A.Pedimento = '0000180' AND B.Pedimento = '0000180') 
        AND (A.SeccionAduanera = '430' AND B.SeccionAduanera = '430')
    INNER JOIN `554` C ON C.Fraccion = A.Fraccion 
        AND (A.SecuenciaFraccion = C.SecuenciaFraccion)
        AND (A.auditoria_id = 4 AND C.auditoria_id = 4)
        AND (A.Patente = '3452' AND C.Patente = '3452')
        AND (A.Pedimento = '0000180' AND C.Pedimento = '0000180') 
        AND (A.SeccionAduanera = '430' AND C.SeccionAduanera = '430')
    INNER JOIN `557` D ON D.Fraccion = A.Fraccion 
        AND (A.SecuenciaFraccion = D.SecuenciaFraccion)
        AND (A.auditoria_id = 4 AND D.auditoria_id = 4)
        AND (A.Patente = '3452' AND D.Patente = '3452')
        AND (A.Pedimento = '0000180' AND D.Pedimento = '0000180') 
        AND (A.SeccionAduanera = '430' AND D.SeccionAduanera = '430')
    INNER JOIN `556` E ON E.Fraccion = A.Fraccion 
        AND (A.SecuenciaFraccion = E.SecuenciaFraccion)
        AND (A.auditoria_id = 4 AND E.auditoria_id = 4)
        AND (A.Patente = '3452' AND E.Patente = '3452')
        AND (A.Pedimento = '0000180' AND E.Pedimento = '0000180') 
        AND (A.SeccionAduanera = '430' AND E.SeccionAduanera = '430')
    INNER JOIN `558` F ON F.Fraccion = A.Fraccion 
        AND (A.SecuenciaFraccion = F.SecuenciaFraccion)
        AND (A.auditoria_id = 4 AND F.auditoria_id = 4)
        AND (A.Patente = '3452' AND F.Patente = '3452')
        AND (A.Pedimento = '0000180' AND F.Pedimento = '0000180') 
        AND (A.SeccionAduanera = '430' AND F.SeccionAduanera = '430')
";

$stmt = $pdo->prepare($SQL);
$stmt->execute();

var_dump($stmt->fetchAll(PDO::FETCH_ASSOC));

【讨论】：

感谢您的回答！但它仍然需要相同的时间。我改变了最后一行 $stmt->fetchAll($pdo::FETCH_ASSOC);

【解决方案2】：

是的，总是有改进的余地。

首先使用Eloquent Relationship 而不是原始mysql。如果您要使用 Laravel，请阅读文档，没有比这更容易的了。
其次，使用 select() 尽量减少不必要的数据使用/消耗。优化代码是一项很好的技能。在optimization on laravel 上查看此答案。
正确使用数据类型。

A.Patente = '3452' 如果您的 Patente 是 int 类型，那么与 string 比较将需要更多处理时间。而是做A.Patente = 3452。比较 int 和 int。

我相信，当您按照这些步骤操作时，您的查询时间不会超过 1 秒。让我在下面的 cmets 中发布。干杯！

【讨论】：

【解决方案3】：

感谢 discord 的用户 pablov 或 pablete 帮助我解决了我的问题！

需要注意的是我做过删除表的测试，例如我从A和B开始，效果很好，ABC等。直到F开始出现缓慢的问题，我想是因为表和记录太多我必须审查，直到 Pablete 给了我这个选项并且它起作用了。

句子如下：

$partidas = DB::select("SELECT A.Patente, A.Pedimento, A.SeccionAduanera, A.Fraccion, A.SecuenciaFraccion, A.ValorComercial, A.PrecioUnitario, 
                                        A.CantidadUMComercial, A.UnidadMedidaComercial, A.CantidadUMTarifa, A.UnidadMedidaTarifa, A.MetodoValorizacion, A.PaisOrigenDestino, 
                                        A.PaisCompradorVendedor, 
                                        B.ClavePermiso, B.NumeroPermiso, 
                                        C.ClaveCaso, C.IdentificadorCaso, C.ComplementoCaso, 
                                        D.ClaveContribucion, D.FormaPago, D.ImportePago, 
                                        E.TasaContribucion, E.TipoTasa, 
                                        F.Observaciones 
                                FROM `551` A 
                                LEFT JOIN `553` B ON B.Fraccion = A.Fraccion AND (A.SecuenciaFraccion = B.SecuenciaFraccion) AND (A.auditoria_id = B.auditoria_id) AND (A.Patente = B.Patente) AND (A.Pedimento = B.Pedimento) AND (A.SeccionAduanera = B.SeccionAduanera) 
                                LEFT JOIN `554` C ON C.Fraccion = B.Fraccion AND (B.SecuenciaFraccion = C.SecuenciaFraccion) AND (B.auditoria_id = C.auditoria_id) AND (B.Patente = C.Patente) AND (B.Pedimento = C.Pedimento) AND (B.SeccionAduanera = C.SeccionAduanera) 
                                LEFT JOIN `557` D ON D.Fraccion = A.Fraccion AND (A.SecuenciaFraccion = D.SecuenciaFraccion) AND (A.auditoria_id = D.auditoria_id) AND (A.Patente = D.Patente) AND (A.Pedimento = D.Pedimento) AND (A.SeccionAduanera = D.SeccionAduanera) 
                                LEFT JOIN `556` E ON E.Fraccion = A.Fraccion AND (A.SecuenciaFraccion = E.SecuenciaFraccion) AND (A.auditoria_id = E.auditoria_id) AND (A.Patente = E.Patente) AND (A.Pedimento = E.Pedimento) AND (A.SeccionAduanera =  E.SeccionAduanera) 
                                LEFT JOIN `558` F ON F.Fraccion = A.Fraccion AND (A.SecuenciaFraccion = F.SecuenciaFraccion) AND (A.auditoria_id = F.auditoria_id) AND (A.Patente = F.Patente) AND (A.Pedimento = F.Pedimento) AND (A.SeccionAduanera = F.SeccionAduanera)
                                Where A.auditoria_id = 4
                                And A.Patente = '3452'
                                And A.Pedimento = '0000180'
                                And A.SeccionAduanera = '430'
                                ");

【讨论】：