Please show me an example of how to get three tables join results

For example:
I have table students,books,book_issue_detail
student table : student_id primary key,student_email
books table: book_id primary key, book_title,author_name
books_issue_details: book_id,student_id,isssue_id primary key, issue_date
I would like to show student_name,book_title,issue_date by latest

985011 wrote:
For example:
I have table students,books,book_issue_detail
student table : student_id primary key,student_email
books table: book_id primary key, book_title,author_name
books_issue_details: book_id,student_id,isssue_id primary key, issue_date
I would like to show student_name,book_title,issue_date by latestWhere is student_name???
You can try below one.
Select a.student_id,b.book_title,c.issue_date
from student a, book b, book_issue_details c
where a.student_id=c.student_id
and c.book_id=b.book_id;

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user11100190 wrote:
Hi,
Thanks for suggesting a soultion, it works well.
But apart from the count (cardinality), the client also expects the actual results. In this case, it seems that the filter will be executed twice (once for counting, then once again for generating actual resultset)
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Once again, that approach may leak memory based on how Coherence is internally implemented, so I can't recommend this approach but it may work.
Another thought is that since returning entire cached values from an aggregation is more expensive than filtering (you have to deserialize and reserialize objects), you may still be better off by running a separate count and filter pass from the client, since for that you may not need to deserialize entries at all, so the cost on the server may be lower.
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Robert

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Distributed Database Consulting, Inc.
http://www.ddbcinc.com/askDDBC

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