English 中文(简体)
浏览量中的重复信息,使用INENER JOIN
原标题:Duplicate information in rows, using SQL INNER JOIN

夜晚

作为我的第一个QL项目的一部分,Im公司在Pokémon方面建立了一个数据库,因为一些Pokémons有两个类型,我有关于这些类型的过境表,因此,在利用INNER JOIN获得有关类型和肤色的信息时,我没有问题,只有一类的Pokémons没有问题,而有两种类型的表格显示有色增长的重复。 不能确定我是否以不正确的方式处理问题。

学历

数据库结构

事先感谢您的帮助。

我试图看到我能够看到有关Pokémons的所有信息,我是利用过去屏幕上显示的INNER JOIN功能的Im,但结果却显示一些行文中的重复信息。

问题回答

暂无回答




相关问题
what is wrong with this mysql code

$db_user="root"; $db_host="localhost"; $db_password="root"; $db_name = "fayer"; $conn = mysqli_connect($db_host,$db_user,$db_password,$db_name) or die ("couldn t connect to server"); // perform query ...

Users asking for denormalized database

I am in the early stages of developing a database-driven system and the largest part of the system revolves around an inheritance type of relationship. There is a parent entity with about 10 columns ...

Easiest way to deal with sample data in Java web apps?

I m writing a Java web app in my free time to learn more about development. I m using the Stripes framework and eventually intend to use hibernate and MySQL For the moment, whilst creating the pages ...

join across databases with nhibernate

I am trying to join two tables that reside in two different databases. Every time, I try to join I get the following error: An association from the table xxx refers to an unmapped class. If the ...

How can I know if such value exists in database? (ADO.NET)

For example, I have a table, and there is a column named Tags . I want to know if value programming exists in this column. How can I do this in ADO.NET? I did this: OleDbCommand cmd = new ...

Convert date to string upon saving a doctrine record

I m trying to migrate one of my PHP projects to Doctrine. I ve never used it before so there are a few things I don t understand. In my current code, I have a class similar to this: class ...

热门标签