convert linq query to sql query online

Recently, there is a project with LINQ, there is a complex search fuzzy query function, a little trouble, around a few bends, and finally resolved, here to share my process, if you have a better way to introduce me. I am not familiar with LINQ, a lot of things to do while looking at the data. The application scenario is as follows: Multi-conditional composite se

refactoring, even with LINQ queries. These Visual StudioFeatures are very important for programmers 'productivity.Transparency processing SS Different Type Systems When you think about the type system of the Microsoft. NETFramework and the type system of SQL Server, you realize that they areDifferent. using LINQ, you give precedence to the. NET type system becau

Language integration query (LINQ) Introduction to LINQ Query --> A query is an expression used to retrieve data from a data source. Queries are usually expressed in a special query language. Over time, people have developed

Series Introduction The analysis series of nhibernate3.0 fully reveals new features, applications and various applications of nhibernate3.0 in terms of configuration, mapping, query, session policy, and application.ProgramBased on nhibernte3.0. If you are not familiar with Nhibernate, you can quickly get started with the Nhibernate series Article navigation series. If you are already using Nhibernate, keep up with the nhibernate3.0 series.

Function Once encountered such a situation, in the Database meeting table has publishtime (datetime,8) field, used to store a session, in the deposit due to specify the time of the meeting, the format is Yyyy-mm-dd Hh:mm:ss, And we query it through YYYY-MM-DD, that is, to query all meeting information for a particular day, so that if the select * from meeting where Publishtime= @PublishTime ( Parameter @pub

, i = 10v = 3, i = 10v = 4, i = 10v = 5, i = 10v = 6, i = 10v = 7, i = 10v = 8, i = 10v = 9, i = 10v = ten, I = 10Those functions cause the query to be executed immediately:The following extension functions will cause LINQ to execute immediately. and executes only once.. ToArray ();. ToList ();. ToDictionary (k = k);Like what:public static void Linq102 (){int[] numbers = new int[] {5, 4, 1, 3, 9, 8, 6, 7, 2

ArticleDirectory Count/sum/MIN/max/AVG Operator 1. Common query: VaR q = from CInDB. Customers where c. City ="London"Select C. contactname; Note: Select must be placed behind DB. MERs Mers is the data source C is one of the customers arrays. Where Condition Statement Select returned content. For example, select C. contactname indicates that all qualified contactnames are returned. 2.

A query is an expression used to retrieve data from a data source. Queries are usually expressed in a special query language. Over time, people have developed different languages for various data sources, such as SQL for relational databases and XQuery for XML. Therefore, developers have to learn new query languages fo

We know that LINQ to Sharepoint is actually converted into calm for access to SharePoint. So how can we know what the calm statement we write is eventually converted.We can use the following methods to achieve our goal. 1. First, create a new class named camldebug in our SharePoint project ,: Calmdebug. CSCodeAs follows: Using System; Using System. Collections. Generic; Using System. LINQ; Us

SummaryNHibernate supports LINQ queries starting from 3.0. Writing LINQ to NHibernate queries is as flexible as writing. NET LINQ code, which makes it easy to implement complex queries. This article uses LINQ to NHibernate to rewrite all previous queries.The code of this article can be downloaded to nhibernate query1.

We know that LINQ to SharePoint actually eventually turns into calm to access SharePoint, so how do we know what the calm statement we write the query statement will ultimately look like. We can use the following methods to achieve our goal.1. Start by creating a new class named Camldebug in our SharePoint project:The CALMDebug.cs code is as follows:Using System;Using System.Collections.Generic;Using System

From this article, we should summarize the application of LINQ in practice. The first thing we should summarize is the combination of LINQ to objects, that is, the use of LINQ with program objects. The most typical application object set is to use it with arrays, as shown in the following example: 1 class Program2 {3 static void main (string [] ARGs)4 {5 Int []

Today I saw scottgu publish the third part of LINQ to SQL (Part 3-querying our database) on his blog, and I also loaded it to Visual Studio 2008 beta1, translate Your learning operations according to your actual learning operations. The northwind database uses the LINQ designer for modeling. Through previous learning, we have learned how to create a class mod

This article is a summary of a very important part of LINQ, namely, LINQ to entities. It can be used to query databases without writing any data access code. Using LINQ to entities is very simple, and most of them are visualized operations. The detailed steps are as follows:Step 1: create a data model: 1. Right-click "

This is the first time you have learned how to use LINQ to entities. Two sample codes are provided. Method-based Query: Using (adventureworksentities awentities = new adventureworksentities ()){Objectset Objectset VaR query =Contacts. select.pdf (Contact => orders. Where (Order =>(Contact. contactid = order. Contact. contactid) Amp; order. orderdate gt; = new d

nhibernate3.0 and their applications are fully revealed in configuration, mapping, query, session policy, and application respectively.ProgramBased on nhibernte3.0. If you are not familiar with nhib.pdf, you can quickly get started with the nhibana travel series Article navigation series. If you are already using nhib.pdf, please keep upNhibernate3.0 profiling SeriesRight. Nhib.pdf topics: http://kb.cnblogs.com/zt/nhibernate/ Nhibernate si

5.2 implement complex data query using LINQ to DatasetLINQ to dataset integrates LINQ with ADO. net. It obtains data through ADO. NET and then queries data through LINQ, so as to perform complex queries on the dataset. This section describes how to use LINQ to dataset to ope