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单词
semi-join
释义
semi-join
网络
半连接;半关联;半联结
网络释义
1.
半连接
半连接
(
semi-join
)和实体化(materialization)策略用于优化子查询。这个不太好讲的明白,还是自己去看文档中的示例吧。
www.jcrdb.com
2.
半关联
转换器将IN或EXISTS子句中的子查询展开(反嵌套),使得优化器能选择
半关联
(
SEMI-JOIN
)操作。这种转换属于启发式查 …
book.51cto.com
3.
半联结
Assignment of Management Accounting Scdl ... 半叠代处理 semi-iterative process
半联结
semi-join
半晶格 semilattice ...
www.docstoc.com
例句
释义:
半连接,半关联,半联结
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更新时间:2025/8/13 5:35:06