结构化查询语言(Structured Query Language,SQL):一种标准化语言,用于在关系数据库中定义对象及操纵数据。
Structured Query language (SQL) : a standardized language used to define objects and manipulate data in a relational database.
结构化查询语言(Structured Query Language,SQL):一种标准化语言,用于在关系数据库中定义对象及操纵数据。
Structured Query language (SQL) : a standardized language used to define objects and manipulate data in a relational database.
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