我在 MySQL 数据库中有 7 列数据。Year1 列属于 Revenue1 列。以下列具有相同的结构。我知道如何在 SQL 中处理这个问题,但在 PDI 中不知道。谁能描述如何做到这一点?
mySQL表结构
+--------+-------+-------+-------+----------+----------+----------+
| Ticker | Year1 | Year2 | Year3 | Revenue1 | Revenue2 | Revenue3 |
+--------+-------+-------+-------+----------+----------+----------+
| | | | | | | |
| ABC | 2010 | 2011 | 2012 | 250000 | 500000 | 1000000 |
+--------+-------+-------+-------+----------+----------+----------+
PDI 所需的标准化输出:
+------------+------+-----------+---------+
| Ticker | Year | Keyfigure | Value |
+------------+------+-----------+---------+
| | | | |
| ABC | 2010 | Revenue | 250000 |
| | | | |
| ABC | 2011 | Revenue | 500000 |
| | | | |
| ABC | 2012 | Revenue | 1000000 |
+------------+------+-----------+---------+