convert linq query to sql query online

,sc.degree from course as c,score as SC where c.cno = sc.cnolinq: From C in Courses J Oin SC in Scores on c.cno equals SC. CNO Select New { sc. Sno,c.cname,sc. Degree }lambda: courses.join (Scores, C = c.cno, sc = sc. CNO, (c, sc) = = new { SNO = sc. SNO, CNAME = c.cname,

LINQ to SQL null Query More than once in the Forum, some netizens asked questions about the query of LINQ null. Here we take the Microsoft northwind database as an example to summarize: For example, how can I implement an SQL sta

Label:In the data query, often encountered the need to dynamically build query conditions. Using LINQ to implement this requirement may be more cumbersome than stitching up SQL statements in the past. This article describes 3 ways to dynamically build query conditions at run

Original address: Http://msdn.microsoft.com/zh-cn/dd567295.aspxIn the data query, often encountered the need to dynamically build query conditions. Using LINQ to implement this requirement may be more cumbersome than stitching up SQL statements in the past. This article describes 3 ways to dynamically build

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the first 8 { 9Model. Ranking = i +1; Ten } One Else A {Determine if the overall score of the employee is the same as the total score for the previous employee - if(Nationalpaiming[i].totalscoure = = Nationalpaiming[i-1].totalscoure) - { theModel. Ranking = List[i-1]. Ranking; //Same rank same - } - Else - { +Model. Ranking =

Linq to SQL multi-conditional queryString proname = This.txtName.Text.Trim ();String lowprice = This.txtLowPrice.Text.Trim ();String highprice = This.txtHighPrice.Text.Trim ();Decimal? LowPrice1 = null, HighPrice1 = NULL;if (!string. IsNullOrEmpty (Lowprice)){LowPrice1 = Decimal. Parse (Lowprice);}if (!string. IsNullOrEmpty (Highprice)){HighPrice1 = Decimal. Parse (Highprice);}var data = from P in dataconte

Multi-condition dynamic query of LINQ to SQL is indeed a headache. A lot of data needs to be written in the expression tree or reflection method.CodeSometimes it is better to think about this complexity than to go back to the era of manual SQL concatenation. However, technology is always moving forward, and it is still

I didn't run my blog for half a year. I was not very diligent, I started my own business, and I didn't have time to come. But in this small project, I used LINQ to SQL. In this case, I must search for multiple combinations of conditions. Although I have only a few research on the Expression Tree, it seems that there is no other way to study it. This article is suitable for small data volumes. For large data

")) . GroupBy (s = s.cno) . Where (cc = (cc. Count () >= 5)) . Select (cc = CC. Average (c = c.degree))Linq:sqlmethodIt can also be written like this:17 13. Grouping 1 Check the average score of the course with at least 5 students enrolled in the score table and begin with 3.2 Select AVG (degree) from score where CNO like ' 3% ' GROUP by CNO have Count (*) >=53 Linq:4 from s in Scores5 w

In the data query, we often encounter the need to dynamically build query conditions. Implementing this requirement with LINQ can be a bit more cumbersome than the previous concatenation of SQL statements. This paper introduces 3 kinds of methods of dynamically constructing query