New syntax for disabling an index for foreign key constraint was added to use with the ALTER statement.
用于为外键约束禁用索引的新语句被使用alter语句添加来使用。
This can be added to existing tables using the ALTER table statement, or the row change timestamp column can defined when creating a new table.
这可以通过ALTER table语句添加到现有表,或者在创建新表时定义行修改时间戳列。
A new, empty partition can be added to a partitioned table by executing the ALTER TABLE statement with the ADD PARTITION option specified; the syntax used looks like this
可以通过执行 ALTER TABLE 语句并指定 ADD PARTITION 选项来向一个分区表增加一个新的空分区,使用的语法如下所示
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