Ado.net Entity Framework (5) esql (ii)

Source: Internet
Author: User
Tags foreach min

ESQL function Statistic class

Avg

Average

Mycontext context = new Mycontext ();
String esql = "Select Value AVG" (it. Itemvalue) from mycontext.dbitemlist as it ";
objectquery<int> query = context. Createquery<int> (ESQL);
foreach (int n in query)
{
Console.WriteLine (n);
}

/* Print:
3
*/

Bigcount

Number (long)

Mycontext context = new Mycontext ();
String esql = "Select Value Bigcount" (it. Itemvalue) from mycontext.dbitemlist as it ";
objectquery<long> query = context. Createquery<long> (ESQL);
foreach (long n in query)
{
Console.WriteLine (n);
}

/* Print:
15
*/

Count

Number (int)

Mycontext context = new Mycontext ();
String esql = "Select Value Count" (it. Itemvalue) from mycontext.dbitemlist as it ";
objectquery<int> query = context. Createquery<int> (ESQL);
foreach (int n in query)
{
Console.WriteLine (n);
}

/* Print:
15
*/

Max

Maximum Value

Mycontext context = new Mycontext ();
String esql = "Select Value Max" (it. Itemvalue) from mycontext.dbitemlist as it ";
objectquery<int> query = context. Createquery<int> (ESQL);
foreach (int n in query)
{
Console.WriteLine (n);
}

/* Print:
6
*/

Min

Minimum value

Mycontext context = new Mycontext ();
String esql = "Select Value Min" (it. Itemvalue) from mycontext.dbitemlist as it ";
objectquery<int> query = context. Createquery<int> (ESQL);
foreach (int n in query)
{
Console.WriteLine (n);
}

/* Print:
1
*/

Sum

Total

Mycontext context = new Mycontext ();
String esql = "Select Value Sum" (it. Itemvalue) from mycontext.dbitemlist as it ";
objectquery<int> query = context. Createquery<int> (ESQL);
foreach (int n in query)
{
Console.WriteLine (n);
}

/* Print:
54
*/

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