The ddl data definition language statements throughout this article are provided as a sample 全文提供了示例ddl (数据定义语言)语句。
2.
Ddl data definition language statements such as table creation and table alteration statements and statements that update table contents are all executed using Ddl (数据定义语言)语句(例如表建立和表更改语句)和更新表内容的语句都是通过使用