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假设我有3个表:Table Employee,EmploymentHistory和Languages。一名员工可以有很多语言和工作经历。使用QueryBuilder的父子过滤器
员工
ID Name Email
1 AAA [email protected]
2 BBB [email protected]
3 CCC [email protected]
工作经历
ID EmployeeID Company Position
1 1 Devon Energy aaa
2 2 Emric bbb
3 3 Capcom ccc
语言
ID EmployeeID Language Level
1 1 English Expert
2 2 Dutch Expert
3 3 Franch Expert
如何使用的ObjectQuery的QueryBuilder应用过滤器?例如:我想过滤德文公司的员工。它应该是员工“AAA”。
var emp = Translate(context.Employees.Include("EmploymentHistories"));
public ObjectQuery<T> Translate<T>(ObjectQuery<T> objectQuery)
{
objectQuery.Where("it.EmploymentHistories.Company = 'Devon Energy'"); // EmploymentHistories.Company is not found. How can I filter through it included property
}
注意:我正在使用QueryBuilder进行高级筛选。
最好的问候,
布赖恩