SQL query update in jdbc reciver

Question

需要在 JDBC 发件人字段中的更新 SQL 查询字段中给出什么查询以停止重复文件进程。我已尝试执行 jdbc 以在 sap pi 中归档 senario 它不断触发相同的数据想要停止它并且应该只读到空值来了。

Answer 1

The best practice is to identify a field to mark the item you already read.

Let's say the field is STATUS for example with valid fields

• blank -> the item has not been read before
• 'X' -> the item has already been read and must not be processed again

Select new items in this way:

SELECT * FROM TABLE WHERE STATUS = ''

Update read items with

UPDATE TABLE SET STATUS = 'X' WHERE STATUS = ''

Note that the two statements MUST have exactly the same WHERE condition

For further reference please refer to Configuring the Sender JDBC Adapter