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must have same number of columns as the referenced primary key

在使用Hibernate实现多对多的测试过程中遇到了这个问题 解决的方法: 将黄色字段的内容添加进去 <set name="customerSet" table="orders" cascade="all"> <key column="goods_id" ></key> <many-to-many class="com.bj186.entity.Customer"…

Laravel - Union + Paginate at the same time? and another problem----1222 The used SELECT statements have a different number of columns (SQL: (select count(*) as aggregate from

### 这是这几天,碰到的一个比较头疼的问题 使用union all联合查询,同时laravel 生成分页,但发生报错? QueryException : SQLSTATE The used from `products` where products.id = order_products.product_id) and order_products.order_id = orders.id) and exists (select .... ### 由于使用联合查询跟使用paginate()来…

The used SELECT statements have a different number of columns？？？

今天我们组就我一个人留守在这里修复bug了,有点小悲伤啊,他们都问我能不能hold得住啊,我当然能hold得住啊: 在看一个入库的存储过程中,在数据库运行的时候是没问题的,项目已启动,进行入库操作就是报错, The used SELECT statements have a different number of columns 顾名思义,就是你选择的列和你得到的列的烈数不一致,然后就去看存储过程,找呀找,找到了,是我自己太粗心了,之前多加了一个列,忘记删掉了: SELECT `status`,…

梨子带你刷burp练兵场(burp Academy) - 服务器篇 - Sql注入 - SQL injection UNION attack, determining the number of columns returned by the query

目录 SQL injection UNION attack, determining the number of columns returned by the query SQL injection UNION attack, determining the number of columns returned by the query 虽然进去一个商品页面,然后把包发到Repeater中,因为题目要求的是查询结果要返回空值,所以我们利用填充NULL的方式注入,只有NULL的数量与查询结果列数…

分区实践 A PRIMARY KEY must include all columns in the table's partitioning function

MySQL :: MySQL 8.0 Reference Manual :: 23 Partitioning https://dev.mysql.com/doc/refman/8.0/en/partitioning.html [仅支持  InnoDB and NDB ] In MySQL 8.0, partitioning support is provided by the InnoDB and NDB storage engines. MySQL 8.0 does not currently…

1503 - A PRIMARY KEY must include all columns in the table's partitioning function

1503 - A PRIMARY KEY must include all columns in the table's partitioning function 错误的原因:表的主键字段必须包含分区字段.为什么? 举例来说,Id为auto_increment primary key,按日期分区.考虑下面的场景,插入一条Id为100的记录,mysql根据日期,当然知道插入到那个分区中,但是要检查所有的分区中是否已经包含Id为100的记录,显然效率很低.如果不检查所有的分区,只检查当前插入的分区…

GreenDAO - primary key on multiple columns

转:http://stackoverflow.com/questions/15250609/greendao-primary-key-on-multiple-columns Does GreenDAO support primary key on multiple columns? I'm using Property's method primaryKey() on two columns but it doesn't work. I'm getting exception: Caused b…

[Err] 1064 - You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near 'number primary key,

如题,mysql建表语句报错 分析:就是一个语法错误,具体问题具体分析 本例中,直接赋值过来的 sql建表语句,直接粘贴到mysql数据库运行,报错! 经查询,mysql中 number类型的定义有如下选择: Number 类型: 数据类型 描述 TINYINT(size) -128 到 127 常规.0 到 255 无符号.在括号中规定最大位数. SMALLINT(size) -32768 到 32767 常规.0 到 65535 无符号.在括号中规定最大位数. MEDIUMINT(size)…

ERROR 1222 (21000): The used SELECT statements have a different number of columns ：

转自:https://blog.csdn.net/linshichen/article/details/52484224…

sql语句遇到错误： The used SELECT statements have a different number of columns :

这是因为使用union的两个SQL语句产生的记录的表结构不一致. 必须是结构完全一致的记录集合才可以使用UNION. 以上就是两个表的字段不一样,导致,所以大家可以检查下.…