PB怎么每个组加个序号

PB如何每个组加个序号?
PB如何每个组加个序号?

[解决办法]

SQL code

组序号：cumulativeSum(if(a   =   a[-1],   0,   1)   for   all)      group中有多个列则，写成 cumulativeSum(if(a   =   a[-1] and c = c[-1],   0,   1)   for   all)序号：GetRow()-First(GetRow()   for   group   1)+1