multi-table join

常见例句

For example, using SQL to create a multi-table outer join that outputs its results to a new XML document is much more complicated to the average developer than writing XQuery.
比方说，对于一般开发人员，使用 SQL 创建输出结果为新 XML 文档的多表外连接查询要比编写 XQuery 复杂得多。
The OLAP (on-line analytical processing) query rapidity was improved by reducing multi-table join, compressing the dimension attribute join keys and effectively aggregating the query data in OLAP.
为了减少OLAP中的多表连接，压缩维属性连接关键字，对查询数据进行有效地分组聚集操作，来提高OLAP查询速度。