primary key

常见例句

Any unique key or primary key must contain all of the partitioning key columns.
任何惟一鍵或主鍵都必須包含分區鍵中的所有列。
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On the next page, you choose where to retrieve the value of the primary key (Figure 28).
在接下來的頁麪中，您要選擇在什麽地方檢索主關鍵字的值（圖 28）。
The typical method is to look up the entity by its primary key, because that will guarantee a unique result.
典型的方法是根據實躰的主關鍵字進行查詢，因爲這可以保証産生一個獨一無二的結果。

At the meeting with ambassadors from member states of the Organization of The Islamic Conference,or OIC., Albright laid out the project's strategies for combating Islamic extremism: First,elevate diplomacy as the primary tool for resolving key conflicts involving Muslim countries.

The column family is organized by customer ID (primary key), you have columns for first name, last name, address, and all the normal customer information, plus as many rows as are needed for each purchase.
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