select distinct records from datatable using linq

... data into a LINQ query. Dwonloaded from: iDATA.ws Chapter 18 Using LINQ to DataSet 313 Chapter 18 Quick Reference To Do This Include a DataTable instance in a LINQ query Call the DataTable object’s ... and performs a projection of fields from each source table. Dwonloaded from: iDATA.ws Chapter 18 Using LINQ to DataSet 307 C# // Explicit join. var results = from cu in Customer.AsEnumerable() ... and shows you how to employ them to extract data from data sets using the power of LINQ. Understanding the LINQ to DataSet Provider ADO.NET’s DataTable class, as a logical collection of data-laden...

Ngày tải lên: 03/10/2013, 00:20

... Queries with LINQ to Entities As with all LINQ providers, the general structure of LINQ to Entities queries varies only a little from the LINQ to Objects standard. In fact, looking at a LINQ to Entities ... will feed data into LINQ. Dwonloaded from: iDATA.ws Chapter 19 Using LINQ to Entities 321 The grid displays content from the Customer and OrderEntries entities, plus a column from the local statusTable ... array. The result2 query is actually doing its work using LINQ to Objects. Dwonloaded from: iDATA.ws Dwonloaded from: iDATA.ws Chapter 19 Using LINQ to Entities 323  Math and statistical functions...

Ngày tải lên: 03/10/2013, 00:20

... platform. LINQ to DataSet and LINQ to Entities both allow you to build LINQ queries that interact with data sourced from SQL Server, either directly (LINQ to Entities) or indirectly (LINQ to ... chapter. Dwonloaded from: iDATA.ws Chapter 20 Using LINQ to SQL 333 Using LINQ to SQL, especially when building models with its visual designer, is straightforward and often much quicker than setting up a LINQ ... function within a LINQ query. Dwonloaded from: iDATA.ws Chapter 20 Using LINQ to SQL 335 C# using (SalesOrderLink context = new SalesOrderLink(connectionString)) { var results = from cu in context.Customers ...

Ngày tải lên: 03/10/2013, 00:20

... performance. Next, we did experiments using all of the continuous lexical sequences and using all of the POS tags sequences within a radius of n words from each CK as features (n=1,2,3,4,5). ... of EMNLP’03. Seon Yang and Youngjoong Ko. 2009. Extracting Comparative Sentences from Korean Text Documents Using Comparative Lexical Patterns and Machine Learning Techniques. In Proceedings ... each probability value of all CE-candidates using SVM. For example, if a sentence has three “P”s, one “P” with the highest probability value is selected as the answer PR. 5 Experimental Evaluation...

Ngày tải lên: 20/02/2014, 04:20

... obtained from the two different data sets. 4 The conceptual analysis : the LEXICLASS software LEXICLASS is a clustering tool written using C lan- guage and specialised data analysis functions from ... filtering method 2 and clustering algorithm are applied in both cases. Table 1 shows an extract from the first data set. The columns are labelled by the expansions (nominal or adjectival) of ... on the data of ta- ble 1 leads him to define conceptual fields. Figure 1 shows the transition from an automatically found cluster to a conceptual field : the KE constitutes the conceptual...

Ngày tải lên: 22/02/2014, 03:20

... alternative (non- dominated) senses, we selected the ancestor ly- ing at the same distance towards the root from the given sense as the average distance from the dom- inated senses to the derived ... feasible to abstract from existential statements to stronger, more gen- eral claims on what usually obtains in the real world. Using a method motivated by that used in deriving selectional preferences ... WordNet were individually examined via inspection of randomly selected ex- amples from the hierarchy. As with holonyms we decided that using any of these additional relation types would degrade...

Ngày tải lên: 24/03/2014, 03:20

... 60 mg/l. Fe removal using rice husk increased from 68.59% to 99.25% i.e. with the increase of the amount of absorbent concentration , while Fe removal using fly Ash varied from 46.18% to 86.757%. Pb ... 60 mg/l. Cd removal using rice husk increased from 26.04% to 67.917% i.e. with the increase of the amount of absorbent concentration, while the Cd removal using fly Ash varied from 25.21% to 73.54%. Cu ... 60 mg/l. Cu removal using rice husk increased from 24.49% to 98.177% i.e. with the increase of the amount of absorbent concentration , while Cu removal using fly Ash varied from 37.38% to 98.545%...

Ngày tải lên: 20/07/2014, 12:47

... structure from eggshell using femtosecond laser ablation Amirhossein Tavangar 1 , Bo Tan 2 , Krishnan Venkatakrishnan 1* Abstract Background: Natural biomaterials from bone-like minerals derived from ... propose a novel technique to synthesize 3D calcium carbonate interwoven nanofibrous platforms from eggshells using high repetition femtosecond laser irradiation. The eggshell waste is value engineered ... biotechnology. Among them, natural bone substitute biomaterials from bovine sources and bone-like minerals (calcium carbonate) derived from corals or avian eggshells, have been preferred due to their...

Ngày tải lên: 11/08/2014, 00:22

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Ngày tải lên: 11/08/2014, 23:22

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Ngày tải lên: 13/11/2014, 06:25

... control are assigned. Comments Using the data table sets up the scene for using the list box in retrieving data in the next How-To. Remember: By using the DataTable object, you can assign ... OleDb.OleDbDataAdapter Dim dtCust As DataTable = New DataTable( ) Dim strSQL As String ' Create the SQL String strSQL = " ;Select CustomerID, CompanyName From Customers " & _ ... with a Try-Catch-End-Try block of code. Listing 3.3 frmHowTo3_2.vb: Loading a List Box By Using the DataTable Object Private Sub btnLoadList_Click(ByVal sender As System.Object, ByVal e As...

Ngày tải lên: 26/01/2014, 11:20

... Customers .CustomerID = Orders.CustomerID To limit the records, use the DISTINCT clause: SELECT DISTINCT Customers.CompanyName FROM Customers INNER JOIN Orders ON Customers.CustomerID = ... String for Retrieving the Data Sub GenerateData(ByVal blnUseDistinct As Boolean) 6.1 Retrieve Unique Records Using Only a Select Query I need to figure out which customers have invoices. ... Technique For this How-To, you will be using the DISTINCT clause on a SQL SELECT statement to limit the data to unique values. When you include the DISTINCT clause, SQL Server uses the columns...

Ngày tải lên: 26/01/2014, 11:20

Ngày tải lên: 23/09/2012, 14:47

... contour by scanning from outer sides towards center. Studying these background pixels will give us knowledge on which part of the histogram is from background and which from text. Then the ... and Okun [4] use edge detectors to extract text from grey scale or color page images. In their method, a gradient magnitude image obtained from the original image is divided into a grid of ... results are promising and show advantage of using relative alignment features in classifying our fanciful designed name card images. We did some tests of using only the 8 spatial features for the...

Ngày tải lên: 05/11/2012, 14:54