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主键 - UUID主键的VARBINARY或BLOB或VARCHAR

[英]Primary Key - VARBINARY or BLOB or VARCHAR for UUID primary key

原文 2010-08-12 06:23:48 1 1 mysql/ database/ primary-key/ blob/ varbinary

I am using UUID as the primary key in one of the tables. 我使用UUID作为其中一个表的主键。
What are the pros-cons of having this field as a varchar/varbinary/blob? 将此字段用作varchar / varbinary / blob的优缺点是什么？

1 个解决方案

The difference between text-based and binary-based UUID is a significant number of bytes - 16 for binary representation vs. 30+ for text - so binary is the way to go. 基于文本和基于二进制的UUID之间的区别是大量字节 - 二进制表示为16，文本为30+ - 因此二进制是最佳选择。 I would opt for VARBINARY over BLOB - if only 'cause VARBINARY is the newer type (and coming from a SQL Server background, I know VARBINARY there can be stored in-row). 我会选择在VARBINARY BLOB -如果只因为VARBINARY是较新的类型（以及从SQL Server背景的人，我知道VARBINARY 有可以存储在行）。

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