过滤器转换 - 空条件
Filter transformation - null conditional
Informatica 开发人员如何处理筛选条件中条件返回的空值？ Informatica 将其视为真或假？
过滤条件示例：
IFF(size<52, TRUE, NULL)
假设示例：我有一个包含尺码列的衣服列表，我想过滤大于 52 的尺码，如果尺码为 50 会怎样？
PD: 我不能修改条件，已经有人修改了
If a filter condition evaluates to NULL, the function does not select the record. If the filter condition evaluates to NULL for all records in the selected port, the aggregate function returns NULL (except COUNT, which returns 0). You can use filter conditions with aggregate functions and the CUME, MOVINGAVG, and MOVINGSUM functions.
Informatica 开发人员如何处理筛选条件中条件返回的空值？ Informatica 将其视为真或假？
过滤条件示例：
IFF(size<52, TRUE, NULL)
假设示例：我有一个包含尺码列的衣服列表，我想过滤大于 52 的尺码，如果尺码为 50 会怎样？
PD: 我不能修改条件，已经有人修改了
If a filter condition evaluates to NULL, the function does not select the record. If the filter condition evaluates to NULL for all records in the selected port, the aggregate function returns NULL (except COUNT, which returns 0). You can use filter conditions with aggregate functions and the CUME, MOVINGAVG, and MOVINGSUM functions.