组合查询一直是管理信息系统的开发重点。
Combinatorial query is the point in the development of management information system.
如果在查询对象上存在这两种查询，那么连接器应该执行组合查询。
If both types of query exist on your query object, then your connector should execute a combined query.
可以使用SQLObject的AND和OR函数来组合查询子句。
You can use SQLObject's and and OR functions to combine query clauses.
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