LINQ 包含基于 Entity Framework Core 3.1 中的多个搜索条件的条件

Question

I have a string parameter that's split up into multiple search filters depending on the outcome of a Split(',') operation. I want to select all entities where the title field contains any of the search filters

I'd expect the following LINQ to work

    string[] filters = param.Split(',');

    var query = await
        (from t in this.Context.Persons
         from f in filters.Where(f => t.Title.Contains(f))
         select t).ToListAsync();

However exequting the query I'm getting the following error:

Processing of the LINQ expression 't => __filters_0
    .Where(f => t.Title.Contains(f))' by 'NavigationExpandingExpressionVisitor' failed. This may indicate either a bug or a limitation in EF Core. 

Any assistance is appreciated.

Answer 1

I ended up implementing a generic LikeAny extension method on IQueryable as described here: https://github.com/dotnet/efcore/issues/10834