You can also drop primary keys, indexes, and unique constraints from the update script.

您也可以从更新指令码置放主索引键、索引和唯一的条件约束。

youdao

Indexes are not just for the primary keys or the unique keys.

索引并不只是为了主键或者唯一键。

youdao

Indexes are not just for the primary keys or the unique keys.

索引并不只是为了主键或者唯一键。

youdao