Запрос к двум таблицам LINQ to Entities, C#, MS Visual Studio 2012

Этот SQL запрос:
/** * GeSHi (C) 2004 - 2007 Nigel McNie, 2007 - 2008 Benny Baumann * (http://qbnz.com/highlighter/ and http://geshi.org/) */ .sql.geshi_code {font-family:monospace;} .sql.geshi_code .imp {font-weight: bold; color: red;} .sql.geshi_code .kw1 {color: #993333; font-weight: bold;} .sql.geshi_code .co1 {color: #808080; font-style: italic;} .sql.geshi_code .co2 {color: #808080; font-style: italic;} .sql.geshi_code .coMULTI {color: #808080; font-style: italic;} .sql.geshi_code .es0 {color: #000099; font-weight: bold;} .sql.geshi_code .br0 {color: #66cc66;} .sql.geshi_code .sy0 {color: #66cc66;} .sql.geshi_code .st0 {color: #ff0000;} .sql.geshi_code .nu0 {color: #cc66cc;} .sql.geshi_code span.xtra { display:block; }

SELECT t2.COLUMN
FROM table1 t1, table2 t2,
WHERE t1.id > 5
AND t1.id = t2.id
 
в Visual Studio 2012 на C# реализовал таким образом (LINQ to Entities):
/** * GeSHi (C) 2004 - 2007 Nigel McNie, 2007 - 2008 Benny Baumann * (http://qbnz.com/highlighter/ and http://geshi.org/) */ .csharp.geshi_code {font-family:monospace;} .csharp.geshi_code .imp {font-weight: bold; color: red;} .csharp.geshi_code .kw1 {color: #0600FF;} .csharp.geshi_code .kw2 {color: #FF8000; font-weight: bold;} .csharp.geshi_code .kw3 {color: #008000;} .csharp.geshi_code .kw4 {color: #FF0000;} .csharp.geshi_code .kw5 {color: #000000;} .csharp.geshi_code .co1 {color: #008080; font-style: italic;} .csharp.geshi_code .co2 {color: #008080;} .csharp.geshi_code .co3 {color: #008080;} .csharp.geshi_code .coMULTI {color: #008080; font-style: italic;} .csharp.geshi_code .es0 {color: #008080; font-weight: bold;} .csharp.geshi_code .es_h {color: #008080; font-weight: bold;} .csharp.geshi_code .br0 {color: #000000;} .csharp.geshi_code .sy0 {color: #008000;} .csharp.geshi_code .st0 {color: #666666;} .csharp.geshi_code .st_h {color: #666666;} .csharp.geshi_code .nu0 {color: #FF0000;} .csharp.geshi_code .me1 {color: #0000FF;} .csharp.geshi_code .me2 {color: #0000FF;} .csharp.geshi_code span.xtra { display:block; }

using (DBEntities DB = new DBEntities())
{
    var mass1 =
        from t1 in DB.table1
        where t1.id > 5
        select new { t1_id = t1.id };

    foreach (var item in mass1)
    {
        var temp_item =
            from t2 in DB.table2
            where t2.id == item.t1_id
            select new { bla bla bla };
    }
}
 
Нужно сделать одним запросом.
0
linq linq-to-entities two-table-query visual-studio

1 ответов


        var mass1 =
        from t1 in DB.table1
        join t2 in DB.table2 on t2.id == t1.id
        where t1.id > 5
        select new { t1_id = t1.id };
 
1