@select注解中可以用条件构造器
https://mp.baomidou.com/guide/wrapper.html#lambda
https://blog.csdn.net/weixin_42236404/article/details/90897484
https://blog.csdn.net/baidu_33552969/article/details/88977014 例子
***** https://www.cnblogs.com/liuyangfirst/p/9739063.html
https://blog.csdn.net/m0_37034294/article/details/82917234
List<ArticleVo> list = articleDao.queryList(page,queryWrapper); @Select("SELECT\n" + "\tarticle.*, category. NAME category_name\n" + "FROM\n" + "\tarticle\n" + "LEFT JOIN category ON article.category_id = category.category_id\n" + "${ew.customSqlSegment} ") List<ArticleVo> queryList(Page<ArticleVo> page,@Param(Constants.WRAPPER) QueryWrapper wrapper);
https://www.wandouip.com/t5i54518/ 关于 condition用法
mybatisPlus_eq 实现类似 <if test="a!=null"> AND a = #{a} </if> Wrapper wrapper= Condition.create().eq(VerifyUtil.isNNull(sysOffice.getParentId()),"PARENT_ID",sysOffice.getParentId()); VerifyUtil.isNNull(sysOffice.getParentId()),"PARENT_ID",sysOffice.getParentId());
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