直接上码:
select 'bigint unsigned' as type ,'8' as bytes ,~0 as max_num,0 as min_num union select 'int unsigned','4',~032,0 union select 'mediumint unsigned','3',~040,0 union select 'smallint unsigned','2',~048,0 union select 'tinyint unsigned','1',~056,0 union select 'signed bigint','8',~01,-(1<<63) union select 'signed int','4',~033,-(1<<31) union select 'signed mediumint','3',~041,-(1<<23) union select 'signed smallint','2',~049,-(1<<15) union select 'signed tinyint','1',~057,-(1<<7); +--------------------+-------+----------------------+----------------------+ | type | bytes | max_num | min_num | +--------------------+-------+----------------------+----------------------+ | bigint unsigned | 8 | 18446744073709551615 | 0 | | int unsigned | 4 | 4294967295 | 0 | | mediumint unsigned | 3 | 16777215 | 0 | | smallint unsigned | 2 | 65535 | 0 | | tinyint unsigned | 1 | 255 | 0 | | signed bigint | 8 | 9223372036854775807 | -9223372036854775808 | | signed int | 4 | 2147483647 | -2147483648 | | signed mediumint | 3 | 8388607 | -8388608 | | signed smallint | 2 | 32767 | -32768 | | signed tinyint | 1 | 127 | -128 | +--------------------+-------+----------------------+----------------------+ rows in set (0.00 sec)
以上这篇MySQL一个语句查出各种整形占用字节数及最大最小值的实例就是小编分享给大家的全部内容了,希望能给大家一个参考,也希望大家多多支持。
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