# Integer 意思 - MySQL Integer类型与INT(11)

Therefore, in modern set-theoretic mathematics, a more abstract construction allowing one to define arithmetical operations without any case distinction is often used instead.

In , the integers are sometimes qualified as rational integers to distinguish them from the more general.

This technique of construction is used by the ; however, many other tools use alternative construction techniques, notable those based upon free constructors, which are simpler and can be implemented more efficiently in computers.

### Java基础之int和Integer有什么区别_一枚

However, integer data types can only represent a of all integers, since practical computers are of finite capacity.

### Java Integer类详解

Retrieved 15 February 2016.

The integer q is called the quotient and r is called the of the division of a by b.

The intuition is that a, b stands for the result of subtracting b from a.

The integers are the only nontrivial whose positive elements are.

Although the natural numbers are closed under , the integers are not since the result can be a fraction when the exponent is negative.

Fixed length integer approximation data types or subsets are denoted int or Integer in several programming languages such as , , , , etc.

Description: The for computing works by a sequence of Euclidean divisions.

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Inthe integers are sometimes qualified as rational integers to distinguish them from the more general.
In fact, rational integers are algebraic integers that are also.
Zero is defined as neither negative nor positive.

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+121reps
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It is usually of some unsigned integer type and its value is usually std::numeric_limitsstring::size_type>::max which is (thanks to the standard integer promotions) usually comparable to -1. Share
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以为我们建了int(1)，就不能存放数据10了，其实不是这个意思。 这个M=5我们可以简单的理解成为，我们建立这个长度是为了告诉MySQL数据库我们这个字段的存储的数据的宽度为5位数，当然如果你不是5位数(只要在该类型的存储范围之内)MySQL也能正常存储，这也就.
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