demand:
1. I have a table recording the contents of the article (N items)
2. Now you need to add his click scale in batch (empty)
3. Now we need to generate the primary key ID of the click table and how to manipulate some data according to some fields of each article.
what I want to do is to write a function
begin
select
insert
endproblem: give an example of how to write the solution.
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