I'm a beginner, so I don't know the exact keyword of the question.
The results of sending and receiving the above query are as follows.
What I want is that the value of
student_id = 2 comes out only once, not twice.
We are going to print it by turning the loop with php, so I hope the same
student_id value is printed once as shown below.
I think it's this
Search keyword: mysql column concentrate
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