一: 常用sql语句: sql顺序:select [distinct] * from 表名 [where group by having order by limit]; 查询某段时间内的数据: https://www.cnblogs.com/benefitworld/p/5832897.html 1.查询当天的数据: SELECT * from 表名 where to_days(时间字段名) = to_days(now()): 2.查询昨天的数据:
DB2读取CLOB字段-was报错:操作无效:已关闭 Lob. ERRORCODE=-4470, SQLSTATE=null 解决方法,在WAS中要用的数据源里面配置连个定制属性: progressiveStreaming, with a value of 2 fullyMaterializeInputStreams, with a value of true
Mybatis调用存储过程 贴码 123456 Error querying database. Cause: java.sql.SQLException: User does not have access to metadata required to determine stored procedure parameter types. If rights can not be granted, configure connection with "noAccessToProcedureB
具体报错信息: org.mybatis.spring.MyBatisSystemException: nested exception is org.apache.ibatis.binding.BindingException: Parameter '__frch_ecoYksKpi_0' not found. Available parameters are [list, param1] at org.mybatis.spring.MyBatisExceptionTranslator.tran
报错如下: Caused by: org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'userService': Injection of autowired dependencies failed; nested exception is org.springframework.beans.factory.BeanCreationException: Could not
启动项目报错 2018-02-26 17:09:51,535 ERROR [org.springframework.web.context.ContextLoader] - Context initialization failed org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'testTreeDao' defined in file [/Users/jds/Docu
使用modify修改字段报错如下: mysql> alter table student modify name sname char(16);ERROR 1064 (42000): 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 'sname char(16)' at line
在oracle修改user表字段name类型时遇到报错:“ORA-01439:要更改数据类型,则要修改的列必须为空”,是因为要修改字段的新类型和原来的类型不兼容. 如果要修改的字段数据为空时,则不会报这种类型的错误,可以进行字段类型的修改. alter table user modify (name varchar2(20)); 要修改字段的新类型和原来的类型不兼容时,可以通过如下方式解决该问题: 1.修改原字段名name为临时字段name_new: alter table user renam
今天闲来无事,学习springboot整合mybatis,在bilibili看视频学的,视频中在dao层的interface上面加上org.apache.ibatis.annotations.Mapper注解就可以了,但是我一直报错.这个应该是springboot整合mybatis的一个bug(新版的) Description: Field userDao in com.yuanqiao.service.impl.UserServiceImpl required a bean of type '
在调用mapper.xml中的方法的时候,报错: org.apache.ibatis.builder.IncompleteElementException: Could not find result map com.pisen.cloud.luna.ms.goods.base.domain.GoodsConfigQuery at org.apache.ibatis.builder.MapperBuilderAssistant.getStatementResultMaps(MapperBuild