用于填充0以查找缺失数据的Sql查询

Question

要填充堆叠和分组的高度图，我需要在我的数据中添加一些0值。我试过使用数字表格，但不知道如何为每个日期缺少的雇员添加0。所以我有：

表(基准、员工、编号、堆栈)

2012-10-13 00:00:00.000 Nick    3   corporate
2012-10-14 00:00:00.000 Jack    1   private
2012-10-15 00:00:00.000 Yannick 1   corporate
2012-10-15 00:00:00.000 Jack    2   corporate

我需要：

2012-10-13 00:00:00.000 Nick    3   corporate
2012-10-14 00:00:00.000 Nick    0   corporate
2012-10-15 00:00:00.000 Nick    0   corporate
2012-10-13 00:00:00.000 Jack    0   private
2012-10-14 00:00:00.000 Jack    1   private
2012-10-15 00:00:00.000 Jack    0   private
2012-10-13 00:00:00.000 Yannick 0   corporate
2012-10-14 00:00:00.000 Yannick 0   corporate
2012-10-15 00:00:00.000 Yannick 1   corporate
2012-10-13 00:00:00.000 Jack    0   corporate
2012-10-14 00:00:00.000 Jack    0   corporate
2012-10-15 00:00:00.000 Jack    2   corporate

我需要使用光标吗?还是有更好的技巧？

Answer 1

    select dates.Datum, employees.Employee, isnull(tbl.Number,0), employees.Stack
      from (select distinct Datum from tbl) dates
cross join (select distinct Employee, Stack from tbl) employees
 left join tbl on tbl.Datum=dates.Datum and tbl.Employee = employees.Employee
                  and tbl.Stack = employees.Stack