MySQL Join Comma Separated Field
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                neeraj
            
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        Published on 2012-06-05T10:36:53Z
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            2012/06/05
            10:40 UTC
        
        
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I have two tables. First Table is a batch table that contain comma separated student id in field "batch"
batch
--------------
id      batch 
--------------
1       1,2     
2       3,4
Second Table is marks
marks
----------------------
id  studentid   subject     marks
1     1         English     50
2     2         English     40
3     3         English     70
4     1         Math        65
5     4         English     66
6     5         English     75
7     2         Math        55
How we can find those students of first batch id =1 who have scored more than 45 marks in English without using sub query.
Problem i found to get this done using a single query is that we can not use IN as an association operator in JOIN statement
What changes are required in below query to make it work?
SELECT * FROM batch
INNER JOIN marks ON marks.studentid IN(batch.batch) where batch.id = 1
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