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cardinality
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基数
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分类:
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详细解释:
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以下为句子列表:
英文: 1 Base cardinality is the number of rows in a base table.
中文: 基本的行集数是一个表的行数。
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英文: 3 Join cardinality is the number of rows produced when two row sets are joined together.
中文: 连接行集数是两个行集被连接在一起时产生的行集数。
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英文: The base cardinality can be captured by analyzing the table.
中文: 基本的行集数能通过分析表被捕获。
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英文: Therefore, the join cardinality is the product of the cardinalities of two row sets, multiplied by the selectivity of the join predicate.
中文: 因此,连接行集数是两个行集的行集数的乘积,被选择的谓词连接的乘积。
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