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Suppose a huge database. For example I have more than 4294967295(for mysql INT) users. In any column which type is int and auto_increment, what happens if that column reach the max value?
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Overflow in int As int data type is 32 bit in Java, any value that surpasses 32 bits gets rolled over. In numerical terms, it means that after incrementing 1 on Integer. MAX_VALUE (2147483647), the returned value will be -2147483648. In fact you don't need to remember these values and the constants Integer.
The range of an int data type is -2,147,483,648 to 2,147,483,647.
In MySQL integer int(11) has size is 4 bytes which equals 32 bit. Signed value is : - 2^(32-1) to 0 to 2^(32-1)-1 = -2147483648 to 0 to 2147483647. Unsigned values is : 0 to 2^32-1 = 0 to 4294967295.
The int will overflow and you will not be able to insert more records to that table.
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