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词汇
literal values
释义
literal values
短语¹⁰⁶¹⁰⁰⁺
⁵
基本
例句
🌏面值;文字值;文本值
For example, if the indexed column has literal values and NULL values, then the selectivity is equal to the number of distinct keys in the index.
例如,如果索引列包含字面值和 NULL值,那么其选择性就等于索引中不同的键的数目。
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更新时间:2025/11/21 16:06:12