Hi:
When encountering Retract, there was a following sql :
*select count(1) count, word group by word*Suppose the current aggregation result is : * 'hello'->3* When there is record to come again, the count of 'hello' will be changed to 4. The following two records will be generated in the stream: [-] 'hello'-> 3 //UPDATE_BEFORE [+] 'hello'->4 //UPDATE_AFTER Can these two records guarantee the order?Must the old result be deleted first and then the new result inserted?
