Routine ACCESS multi table query, database programming source code, a good reference.
说明：ACCESS多表查询例程，数据库编程源码，很好的参考资料。
Furthermore, querying decomposed XML data can be challenging, often requiring multi-table joins.
另外，查询分解的XML数据很困难，常常需要多表联结。
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。
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。
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