使用tsql我需要在各种分组和付款状态中调整一些汇总列。
之前：
+---------------+----------+----------------------------+
| policy number | Grouping | £ Amount |
+---------------+----------+----------------------------+
| #123 | a | £1 (for issued payment) |
| #123 | b | £11(for cancelled payment) |
| #123 | a | £21(for cancelled payment) |
| #123 | b | £31(for issued payment) |
+---------------+----------+----------------------------+
渴望之后：
+--------+----------------+----------------+-------------------+-------------------+
| policy | Group a Issued | Group b Issued | Group a cancelled | Group b cancelled |
+--------+----------------+----------------+-------------------+-------------------+
| #123 | £1 | £31 | £21 | £11 |
+--------+----------------+----------------+-------------------+-------------------+
尽管在before表中生成求和列时使用了isnull函数，但我的所有结果都为null。我已经详尽地检查了我的预透视表，并且没有空值。
请注意，因为我必须跨多种付款方式分组，我不得不使用重复的组列。