1  com.baomidou.mybatisplus.core.toolkit.Wrappers;

boolean isTableWorkdayUpdated = projectWorkdayService.update(
    Wrappers.<ProjectWorkdayEntity>lambdaUpdate()
        .eq(ProjectWorkdayEntity::getFkTaskId, projectTaskId)
        .set(ProjectWorkdayEntity::getFkTaskName, newTaskName));

2   LambdaUpdateWrapper

LambdaUpdateWrapper<ProjectEntity> projectEntityLambdaUpdateWrapper = Wrappers.lambdaUpdate();
projectEntityLambdaUpdateWrapper.eq(ProjectEntity::getFkPrincipal,fkUser);
projectEntityLambdaUpdateWrapper.set(ProjectEntity::getPrincipalName,newName);
projectService.update(projectEntityLambdaUpdateWrapper);