怎么操作数据格式以达到合并单元格？

Question

我尽可能简洁地描述一下问题。eg:[    {school:'haha',name:'xiaoming',id:'1001'},    {school:'haha',name:'zisi',id:'1002'},    {school:'haha',name:'zhangsan',id:'1003'},    {school:'xixi',name:'wangwu',id:'1004'},    {school:'xixi',name:'haoer',id:'1005'},    {school:'hehe',name:'xiaoliu',id:'1006'}]用的是angularjs1.x，把以上数据ng-repeat到表格里，想实现的效果是school相同的合并单元格，具体应该怎么实现，用不用操作数据格式呢？