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mybatis plus实现queryWrapper 进行动态排除查询Column列，动态进行groupBy分组，default Children select(Predicate predicate)，.groupBy(req.getIsCountryGroup(), OverviewReportModel::getCountry);，queryWrapper.select(item -> !noSelected.contains(item.getColumn()));...

MyBatis Plus 在复杂查询条件Where中加括号，多个查询条件在括号内使用add()方法官方给出示例：and(i -> i.eq("name", "李白").ne("status", "活着"))---> sql输出结果：and (name = '李白' and status <> '活着')QueryWrapper无条件时 QueryWrapper<Demo> queryWrapper = new QueryWrapper<>();

报错信息使用 Wrapper 自定义SQLThere is no getter for property named ‘ew’ in 'class com.baomidou.mybatisplus.core.conditions.query.QueryWrapper org.mybatis.spring.MyBatisSystemException: nested exception is org.apache.ibatis.reflection.ReflectionException: There

方法1在配置文件yml中添加field-strategy属性# mybatis-plus 配置mybatis-plus: global-config: db-config: # 添加非空判断 field-strategy: not_empty从源码中可看出FieldStrategy的非空策略有public enum FieldStrategy { IGNORED, NOT_NULL, NOT_EMPTY, DEFAULT;