介绍 TCP协议是具有下列特性的传输层协议: 它是可靠的。这意味着TCP协议保证报文以正确的顺序传输,或者通知报文没有传输成功。TCP协议包含错
5.0. Introduction A string can be binary or nonbinary. Binary strings are used for raw data such as images, music files, or encrypted values. Nonbinary strings are used for character data such as text and are associated with a character set and collation (sort order). A character set determines which characters are legal in a string. You can choose collations according to whether you need comparisons to be case sensitive
4.0. Introduction This chapter covers topics that relate to creating and populating tables: • Cloning a table • Copying from one table to another • Using temporary tables • Generating unique table names • Determining what storage engine a table uses or converting it from one storage engine to another 4.1. Cloning a Table Problem You want to create a table that has exactly the same structure as an existing
3.0. 介绍 本章专注使用SELECT语句从你的数据库获取信息。 3.1. 指定SELECT哪行哪列 问题 你想要从一张表中展示特定行和列。 解决方法 为了指示展示哪
2.0. 介绍 MySQL Client API Architecture Each MySQL programming interface covered in this book uses a two-level architecture: The upper level provides database-independent methods that implement database access in a portable way that’s the same whether you use MySQL, PostgreSQL, Ora‐ cle, or whatever. The lower level consists of a set of drivers, each of which implements the details for a