How to prevent insert at the same month

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I have table that contain (id, name and date) and my concern is: how to prevent saving same id at the same date but only month and year..
I hope someone understand my question, sorry for my terrible explain.

Posted 21-May-15 20:21pm

DheeDika

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Pankit Patel 22-May-15 2:45am

did you mean that you have to prevent to store Same Id at the Same date...???
and what u want to say about "but only month and year"

DheeDika 22-May-15 7:48am

I just want to exactly prevent store just by month and year(mm-yyyy) not by dd-mm-yyyy :)

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KarstenK · Answer 1 · 2015-05-21T20:42:00

Solution 1

The id should be unique. So you need some logic for getting a unique id. An easy way is to store the last id value in a function and a request is adding 1 and stores it like that:

int getId()
{
 int last = IdFromStore();
 int id = last + 1;

 StoreId( id );

 return id;
}

Posted 21-May-15 20:42pm

KarstenK

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DheeDika 22-May-15 7:48am

Id alrready unique, gotta go try it.