mysql 中 int(11) 列的大小(以字节为单位)?

2022-01-14 00:00:00 types int mysql

mysql中int(11)列的大小是多少字节?

What is the size of column of int(11) in mysql in bytes?

以及可以存储在此列中的最大值?

And Maximum value that can be stored in this columns?

推荐答案

无论指定什么长度，一个 INT 始终是 4 个字节.

An INT will always be 4 bytes no matter what length is specified.

  • TINYINT = 1 字节(8 位)
  • SMALLINT = 2 字节(16 位)
  • MEDIUMINT = 3 字节(24 位)
  • INT = 4 字节(32 位)
  • BIGINT = 8 字节(64 位).
  • TINYINT = 1 byte (8 bit)
  • SMALLINT = 2 bytes (16 bit)
  • MEDIUMINT = 3 bytes (24 bit)
  • INT = 4 bytes (32 bit)
  • BIGINT = 8 bytes (64 bit).

长度只是指定在使用 mysql 命令行客户端选择数据时要填充多少个字符.存储为 int(3) 的 12345 仍将显示为 12345，但如果将其存储为 int(10) 它仍将显示为 12345，但您可以选择填充前五位数字.例如，如果您添加了 ZEROFILL，它将显示为 0000012345.

The length just specifies how many characters to pad when selecting data with the mysql command line client. 12345 stored as int(3) will still show as 12345, but if it was stored as int(10) it would still display as 12345, but you would have the option to pad the first five digits. For example, if you added ZEROFILL it would display as 0000012345.

...最大值将为 2147483647(有符号)或 4294967295(无符号)

... and the maximum value will be 2147483647 (Signed) or 4294967295 (Unsigned)

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