predicates

英 [ˈpredɪkeɪts]

美 [ˈpredɪkeɪts]

n.  谓语(句子成分，对主语加以陈述，如John went home中的went home)
v.  使基于; 使以…为依据; 表明; 阐明; 断言
predicate的第三人称单数和复数

柯林斯词典

The noun is pronounced /'predɪkət/. The verb is pronounced /'predɪkeɪt/. 名词读作 /'predɪkət/。动词读作 /'predɪkeɪt/。


• 谓语
  In some systems of grammar, thepredicateof a clause is the part of it that is not the subject. For example, in 'I decided what to do', 'decided what to do' is the predicate.
• VERB 基于；取决于；以…为基础
  If you say that one situationis predicated onanother, you mean that the first situation can be true or real only if the second one is true or real.
  1. Financial success is usually predicated on having money or being able to obtain it.
     先要有钱或者能弄到钱才能够赚钱。

双语例句

• Table-level predicates typically exist on some dimension tables as well.
  表级谓词通常也存在于一些维度表中。
• Put predicates in square brackets, including any "and" and "or".
  将谓词放在方括号中，包括任何“and”和“or”。
• In other words, the optimizer overestimated the selectivity of the local predicates on the table.
  换句话说，优化器过高估计了本地谓词对表格的选择性。
• A merge scan join always involves one or more Equal join predicates.
  一个合并联接总是涉及一个或多个Equal联接谓词。
• Join predicates need to be specified in the FROM clause.
  需要在FROM子句中指定联结谓词。
• You need to design indexes to support efficient access with local predicates and join predicates.
  您需要使用本地谓词和连接谓词设计索引，以支持高效访问。
• For example, assume your queries contain predicates on area codes and on full phone numbers.
  例如，假定您的查询包含区号和完整电话号码上的谓词。
• What kinds of predicates are used on each referenced table?
  每个引用表中使用了哪些种类谓词？
• For example, what if the two local predicates are not as selective as estimated by the optimizer?
  例如，如果这两个本地谓词选择性没有优化器评估的强，怎么办？
• What kinds of predicates are used to join the referenced tables?
  使用了哪些种类谓词来连接引用表？