Unique Index

常見例句

雙語例句

• The primary key and any unique index of the table must be a superset of the associated partitioning key.
  表的主鍵和所有惟一索引都必須是相關(guān)分區(qū)鍵的超集。
• On a federated system, unique index information might be required to perform an UPDATE/DELETE operation for some data sources.
  在一個聯(lián)邦系統(tǒng)上，為了為某些數(shù)據(jù)源執(zhí)行 UPDATE/DELETE 操作，需要惟一的索引信息。
• In other words, all columns that are part of the partitioning key must be present in the primary key or unique index definition.
  換句話說，作為分區(qū)鍵一部分的所有列都必須出現(xiàn)在主鍵或惟一索引定義中。

權(quán)威例句

• Like most unique asset classes, the index has periods of outperformance and periods of underperformance.
  FORBES: A Beautiful Asset Class Few Can Own
• Oxford Economics built a unique global ranking model based on a weighted composite index to compare and benchmark employee diversity across countries, industries and occupations.
  FORBES: Top 5 Industry Sectors In Workforce Diversity
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