Question

http://redis.io/commands/hincrby”rel=“noretinger”>redis。

The range of values supported by HINCRBY is limited to 64 bit signed integers.

我也想知道,64个签署合同的人是多么大。

Answer 1

This article is good for more information about this topic: http://en.wikipedia.org/wiki/Integer_(computer_science)

So the answer to the question should be: From -9,223,372,036,854,775,808 to 9,223,372,036,854,775,807, or from −(2^63) to 2^63 − 1

储存在已签字的胎盘上的最高正数是双亲。

<>->----63>

0111111111111111111111111111111111111111111111111111111111111111

If you think carefully you can find out that this number is exactly 2^63 - 1.

Answer 2

签字的分类范围从尺寸——2^(n-1)到2^(n-1)——在这种情况下,最高值为2^ 63 - 1或9 223,372,036,854,775,807

Answer 3

    Formula   

    2^(n-1) is the formula of the maximum value of a Bigint data type.

    In the preceding formula N is the size of the data type. The ^ operator calculates the power of the value.

    Now determine the value of N in Bit:

Select (max_length * 8) as  Bit(s)  from sys.types Where name =  BIGInt 
=64 Bits

范围:-9223372036854775808至9223372036854775807

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