Left Join Of Two Data Table Into One Two DataTabale?
Aug 18, 2011Here is my Scenario
I Have First Datable :TableA
**Item** **Place**
ItemA PlaceA
[code].....
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LINQ Left Outer Join W/ Date Range Restriction On Right Table?
Feb 4, 2011I have two tables, a LP_task table and an lp_Update table. I want a complete list of tasks and only updates that were posted during a specific date range. LINQ doesn't seem to support any other join criteria but 'equals'or each task. I want all tasks (left table) even if they don't have an update. (Left Outer Join)
Dim TasksData = (From t In db.LP_Tasks _
Group Join up In db.LP_Updates On t.ID Equals up.TaskID Into upds = Group _
From u In upds.DefaultIfEmpty _
[code]......
VS 2008 - Inner Join Using Data From Another Table
Mar 3, 2010Right now I have a listbox, this listbox displays surnames, when clicked it displays their address. I have a 'confirm' button to confirm the right person. And now I need more information to come up when that's clicked, giving data from another table. I'm sure I need to use an inner join but I don't quite understand how to do it
View 11 RepliesLeft Join Linq To Entity's .net?
Apr 11, 2011I can't figure out that linq to entity query syntax. My problem is that if the value of the Calls table is null then noting comes up, I want to make something like a left join to get 'all' rows from the Calls table.I tried to group it but I can't figure out the correct way to write it.
Dim TicketQuery As ObjectQuery = From c In EnData.Customer _
Join t In EnData.Calls On t.CustomerID Equals c.CustomerID _
Join Status In EnData.Lists On t.Status Equals Status.ListValue _
[code].....
LINQ Dataset LEFT JOIN?
Jun 14, 2012i think i have not represented my question correctly here My LEFT OUTER JOIN MSDN reference is here to visualize my problem in access databaseTABLE "T1"1234567TABLE "T2"1,sunday2,monday i need output as 1,sunday2,monday34567 i need it to done through LINQso far i did is here
Dim RIGHT_table As DataTable = ds1.Tables("t1")
Dim LEFT_table As DataTable = ds2.Tables("T2")
Dim OutPut = From LEFTsource In LEFT_table.AsEnumerable(), RIGHTsource In RIGHT_table.AsEnumerable() _
[code]...
Linq Left Outer Join?
Apr 21, 2011I ultimately what I needed is generic function which would take two datatable and and 2 tablekeys and return Joined datatable. So here is my first step to solve it.
How Can I write Linq example of following T-SQL example in VB?
SELECT * FROM
Table1
LEFT OUTER JOIN
Table2
ON Table1.key = Table2.key
LINQ To SQL Left Outer Join VB?
Nov 9, 2011I cannot get this to work with LINQ to SQL vb.net?
SELECT a.FLD_ID, a.FLD_SUBJECT, a.FLD_GROUP, a.FLD_SUBMITTED, a.FLD_LASTACTION, a.FLD_CLOSED
FROM TBL_WSS_TT_TICKET a LEFT OUTER JOIN
TBL_WSS_TT_ALLOW b ON a.FLD_ID = b.FLD_TICKET_REF
WHERE (a.FLD_USER = 'user') OR (b.FLD_USER = 'user')
Use LINQ To Left Join 2 Datatables?
Nov 10, 2011I have two UNTYPED datatables: "Shelfs" and "Books". Data came from different databases.
I must create a "left join" relationship because I want a list of ALL shelfs and books (if they have any).
Dim dset As New DataSet
dset.Tables.Add(dtShelfs)
dset.Tables.Add(dtBooks)
[Code].....
I spent hours googling around, but all examples I found were only applicable to strongly typed dataSets, and how to build queries (not to get the data)
I could solve this the "easy" way: by looping both datatables and sending the rows to a third one, but I want to do this the "right" way and, of course... LINQ exists to make things easier and I don't know how to use it
.net - Subsonic3 LINQ Left Outer Join?
Mar 25, 2011I am using Subsonic3 and would like to get a Left Outer Join between two tables. Here is the tested SQL
SELECT a.*
FROM vwVendor a
LEFT OUTER JOIN dbo.pubvenmap b
on a.vend_no = b.vend_no
where b.vend_no is null
[Code]...
LINQ -> Extra Condition On Left Join?
Aug 19, 2010I'm basically trying to emulate a query like the below in LINQ:
DECLARE @id INT
SET @id = 1
SELECT
q.txtLQRdisplayName AS DisplayName,
[code]....
Linq Left Outer Join Null
Sep 27, 2010I've got what I think is a working left outer join linq query but I'm having problems with the select because of null values in the right hand side of the join.[code]I want to return all of e and one column from c called tClassCode. I was wondering what the syntax would be. As you can see I'm using vb.net.[code]If i remove the c.tClassCode from the select the query runs without error. So i though perhaps i needed to do a select new but i don't think i was doing that correctly either.
View 2 RepliesVS 2008 LINQ Dataset LEFT JOIN?
Jun 13, 2012i am having 2 tables one table stores the WEEK-days another table stores the WEEK-days + other fields.i need the LINQ query to return all WEEK-days + other fields just like SQL LEFT JOIN query so far i did is [code]....
View 5 RepliesVS 2008 Linq To DataSet Left Join?
Feb 10, 2011The query works but only retrieve the joined rows, i want to retrieve all rows in the first datatable.My current query:
vb.net
Dim q = From regE In (From registoE In _dtRegistosAEnviar.AsEnumerable
Group registoE By colaborador = registoE.Field(Of String)("Colaborador") Into grupoE = Group
Select New With {
[code]....
Write For 3 Tables Left Join Statement?
Mar 11, 2010Table 1 has fields: A, B, C, Table 2, there are fields: D, E, F, Table 3 has fields: G, H, I
Connect the condition that A = D and F = I
provide a look at Table A left join B, C of the SQL statement
Asp.net - SQL Query Conversion To LINQ Left Outer Join?
Jul 4, 2009I've looked all around and spent way to long trying to convert this SQL statement into a Linq statement in VB. I'm sure it would be a good example for others out there - the statement is trying to pull products that have a many-to-many relationship with product categories, and the categories have a hierarchy of parents/children.
Here is the query I am trying to convert:
SELECT P.ProductID, P.ProductName, P.ProductSlug, P.PartNumber
FROM Products AS P
INNER JOIN Products_Categories AS PC ON PC.ProductID = P.ProductID
[code]....
I can get up to the point where I am trying to say "WHERE ... (P_Cats.Parent = 9)" but can't figure that part out.
Left Join / Group By And Sum Where Related Records Do Not Exist
Dec 9, 2010I am trying to accomplish the following:
SELECT Table1.prod_code, SUM(Table1.prod_bal) AS TotalProdBalance
FROM Table1
LEFT OUTER JOIN Table2 ON Table1.prod_code = Table2.prod_code
WHERE Table2.prod_code IS NULL
GROUP BY Table1.prod_code
HAVING (SUM(Table1.prod_bal) <> 0)
How to translate this to Linq using VB.net syntax?
.net - Linq-to-Entities: LEFT OUTER JOIN With WHERE Clause And Projection?
Oct 18, 2010how to translate a simple SQL LEFT OUTER JOIN with a two condition where clause into a working Linq-to-Entities query. There are only two tables. I need values for all rows from Table1, regardless of matches in Table2, but the WHERE clause uses fields from Table2. In SQL, the two parameters would be Table2WhereColumn1 and Table2WhereColumn2, and the query (which works) looks like this:
SELECT t1.Table1Id,
t1.FieldDescription,
t2.FieldValue
[code].....
I've tried using Group Join with DefaultIfEmpty(), as well as an implicit join (without the actual Join keyword), and I only get rows for items that have values in Table2. I'm sure this won't help, but here's an example of the Linq I've been trying that doesn't work:
Public Shared Function GetProfilePreferencesForCedent(ByVal dc As EntityContext, _
ByVal where1 As Int32, _
ByVal where2 As Int32) _
[code].....
Unable To Use A Linq-to-sql Statement And Getting A Left Outer Join To Work?
Apr 29, 2010i'm having troubles with a linq-to-sql statement and getting a left outer join to work. here is a sample of two tables i'm trying to join and my code that i've wrote.
Table1 Table2
f1 f2 f3 f4 fID f1 f2 f3 f4
val1 val2 val3 val4 1 val1 val2 val3 val4
[code]....
Instead I'm returning ALL values from table 1. I need to return all values from the left outer join where tbl2.fID is null.
C# - LINQ To SQL Join Two Tables To Select Parent Table Twice Based On Two Different Columns From Child Table?
Aug 23, 2010I have two tables Employees and CafeLogs. Some employees can be cashiers and also customers at the Cafe shop.
Table structures:
Employees: EmployeeId(PK) , FirstName, LastName
CafeLogs: LogId (PK), CashierId, EmployeeId, Value, => CashierId and EmployeeId are the data from column EmployeeId of Empoyee table
Table relationship:
Employees 1:N CafeLogs (CashierId (FK))
[code]....
Right now I know how to select only LogId, Employee's name, and , Value, not with Cashier name yet.
Dim query = From log In db.CafeLogs _
Join emp In db.Employees On emp.EmployeeId Equals log.EmployeeId _
Select log.LogId, emp.FirsName, emp.LastName, log.Value
Datatables Left Join Linq - Joining 2 Datatables And Have The Joined Datatable As Result
Jun 1, 2012I'm having a hard time joining 2 datatables and have the joined datatable as result. First datatable (labels) holds data including a printerid. Second datatable (printers) holds printer references (id > unc). I would like to have as endresult (joined) a datatable with all data from the first datatable with the field (unc) of the second datatable. [Code]
View 3 RepliesJoin Two Table In Datagridview?
Apr 22, 2010How can i Join two tables in datagrid view? Presently this is the command which still cant work after i tried the sql JOIN command...
Dim cmd1 As OleDbCommand = New OleDbCommand("SELECT * FROM LECTURE_DETAIL WHERE LECT_ID = '" & cmd_lecID.Text & "'", con)
I get the error:
One or more errors occurred during processing of command. ORA-00918: column ambiguously defined
How To Join 2 Tables In Combination With Relational Table
Oct 4, 2011customers
phonenumbers
customers_has_phonenumbers
customers -> detailed
customers.customer_id int(11) primary auto_increment
[Code] .....
How to get the data by customers.customer_id from phonenumbers?
Left Join Of Two DataTable Into One Datatable
Aug 23, 2011My 1st DataTable TableA
[Code]...
But I am not Getting the Proper Output
Multi - Table Join Query In ASP.NET To SQL Server Via LINQ?
Jan 29, 2012I'm working on an ASP.NET 4.0 site, which I inherited ownership of. It has a number of existing LINQ datasources pointing to individual tables. For example, to the Patient Encounter Summary table in SQL Server. The problem is in displaying the data there. It's a normalized database, so that table contains (for example) the provider ID, rather than the provider name.
It's simple enough to join the Patient Counter Summary to the Providers table (in SQL)... but how does one do that in ASP.NET? I'm not sure of the correct nomenclature, but the 'mid layer' is VB.
[Code]...
Insert / Update / Delete In A Datagridview Which Is 2 Table Is Bound Into It (inner Join Statement)
Mar 12, 2009How do you insert/update in a datagridview which is 2 table is bound into it (inner join statement)Best Regards,Iannoob vb programmer
View 1 RepliesSQL Statements For MS ACCESS - Insert A New Record Into The Existing Table And Join Tables?
Apr 18, 2009i am using ASP.NET with VB.NET to connect to a MS Access database. how can i make the sql statement to insert a new record into the existing table and join tables?
View 1 RepliesGenerating Left Side Of Truth Table With All Possible Combinations
Apr 22, 2010i was wondering if any one could help me on how to generate the left side of truth table showing all possible combinations in VB. and if possible how to display in Excel(2003)?
View 5 RepliesInner Join - Join Two Tables,'Employee' And 'Dispatch'
May 17, 2012Iwant to join two tables,'Employee' and 'Dispatch'. Dispatch has column 'DispatcherID' and 'TechnicianID' which are both foregn keys to EmployeeID in Employee table.I want to join these two tables using EmployeeID so that i can obtain the matching name to each id.but it only works when i make a single join to either DispatcherID or TechnicianID and not for both.
[code]
select Employee.firstname+' '+Employee,secondname as Technician,Employee.firstname+' '+Employee.secondname as Dispatcher from Dispatch inner join Employee on Dispatch.TechnicianID=Employee.EmployeeID inner join Employee on
[CODE]...
Join Data In Array?
Jan 26, 2010I am reading two lines of data into an array, the data being split by commas (,).[code]...
View 2 RepliesAssign A Specific Position Across The Line To Have The Printer Print The Data At Without Left Padding The Array Data?
Jul 6, 2011Ypos = TopMargin + Count * PrintFont.GetHeight(ev.Graphics)
ev.Graphics.DrawString(ROData(x, 3), PrintFont, Brushes.Black, LeftMargin, Ypos, New StringFormat())
Count = Count + CInt(ROData(x, 4))
The above line prints the data contents of the ROData array in position three. I would like to be able to assign a specific position accross the line to have the printer print the data at without left padding the array data.