Databases :: Bad SQL Query Or Tables Not Indexed Properly?
Sep 29, 2010will bad SQL query or tables not indexed properly cause any problem when we execute it? or it may just take more time to execute??
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View 1 RepliesSQL: Selecting From Multiple Tables In One Query Or A Query For Each Table?
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In my DAL should I put a big query that join the 6 tables + the m:m reference tables (btw it produces multiple data that I don't need Please refer to my old question) and place all the data in it's specific object property or, should I use a single query for each table and create an object for each fetched table .. and finally send those to the UI ?If I wasn't clear enough please let me know what I further information do you need to know!
Databases :: Oracle Query Convert To Sql Server Query
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SELECT DISTINCT
LEVEL LVL,
SCH.NSCHEDULE_SL,
SCH.NSCHEDULE_SL_FM,
SCH.CSHED_CNAME
FROM FA_SCHEDULES SCH
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AND NBRANCH_SL = 2
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C# - Add The Same Value In To The Different Tables That Are In Different Databases?
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View 3 RepliesADO.NET :: Synchronizing Two Tables On Two Databases With A Dataset?
Sep 29, 2010I have a C# problem I need to synchronize two MS Access tables from two different databases(two databases over a network) which is quite similar, I thought of using two different OleDbConnections and two DataAdapters to fill a Single DataSet and then manipulate the data in the DataSet, I think the source table (database with the primary data) should be loaded first (into the DataSet) then the secondary table from the remote database should subtract the existing records in the DataSet to get the difference then the difference should be Appended to the remote table, but I don't know how to remove the same records from the DataSet and to send the remaining records to the secondary database.
Here is some code I already have, but I don't know how to get this to work:
[Code]....
SQL Server :: Join Two Tables In Different Databases?
Sep 22, 2010i need to join two tables in different databases, how it can be done??? and if i want to use sqldatasource control to bind results to some data-bound control how can I configure my sqldatasource control???
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Feb 1, 2011I've a problem in MySql.I need to retrieve data from two tables,in which one field is common in both the tables and I need to retrieve distinct data.But all I'm getting is this :
Id Name Initial
1 abc A
1 abc A
1 abc A
2 def B
2 def B
2 def B
How can I make it like this :
Id Name Initial
1 abc A
2 def B
3 ghi C
Databases :: Best Way To Insert Data Into Multiple Tables?
Jan 22, 2010I am using mysql as my database.From one of my web pages I want to insert data to 4 tables.All the data should be inserted to these different tables on a single button click from the web page.How can I achieve this?Which is most reliable way to insert data to multiple tables on a single click event?
Will the sql operation with 4 'insert' statements separated by semicolon work for me?
SQL Server :: Join Tables Across Databases And Return An ADO Dataset
Aug 18, 2010I need to join two tables accross two different databases and return an ADO dataset.
ie: select * from database1.table1 a inner join database2.table2 b on
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Databases :: Trying To Figue Out Groupings On Data Tables With LINQ?
Feb 15, 2010I am having a hell of a time trying to figue out groupings on data tables with LINQ. I am using VB
I have two data tables. I'll define from Table Law = columns (ven_grp,comp_no,acct_unit,description,company)
Table Comps = columns(comp_parent,comp_struct1, comp_struct2, .... through comp_struct9 Now here is the SQL equivalent of what I need in LINQ
[Code]....
For reasons I won't get into I can't use SQL to do what I need to do. this is how far I got with LINQ
[Code]....
which works ok, but I can't for the life of me figure out how to group on the fields I need to and then dump the query results into datatable. I've looked at tons of examples on line and I just don't seem to get it or it does not work the way examples show. Both of my tables are defined as similar "Dim law = ds.tables(0).asenumerable()
Databases :: Alternate Logic For Removing Temporary Tables?
Feb 1, 2011We have some stored procedures in mysql which use temporary tables.For performace reasons we need to replace them and write alternate code.
View 1 RepliesWeb Forms :: Count Query Not Displaying Results Properly In Label Control?
Apr 18, 2013The query I used here is
SELECT top '"+lblCount.text+"' Company_Id, CompanyName, All_Countries,All_Industries,Employees,Revenue, Status FROM SN001CompanyTable where Client_Id=100 ORDER BY [Company_Id] DESC
but its not showing proper results..
In this lblCount contains the no of row to be displayed..
Databases :: Insert / Update Data To Multiple Tables On A Single Button Click
Sep 23, 2010I need to insert/update data to 3 or more tables on a single button click.What is best method for achieving this?I am using mysql as my DB.
View 2 RepliesLINQDataSource - Query Multiple Tables?
May 15, 2010have a database and I've created a DBML Linq-to-SQL file to represent this database. I've created a new aspx page and dropped a linqdatasource and a formview control onto it. When I configure the linqdatasource it gives me the choice only to select * from one table...but I want to pull from multiple tables. e.g. I have tables like simple_person, simple_address, simple_phone, and I want to pull from all of them.
View 1 RepliesWeb Forms :: Insert Value In Two Tables By Single SQL Query
Apr 11, 2012How can I insert value in two tables by single sql query because if I'm using two sql query it gives problem me on binding data and connection. Like I have 2 table table 1, table 2 ... In table I'm only save id and name and in other table I'm saving id, time1, time2
View 1 RepliesDatabases :: Query Not Being Executed?
Jan 29, 2010I need to insert values from the frontend into a mysql table. I am using a 3 layer architecture. the below is the code that is written in my dataaccess layer. the query is not being executed.
public int Insert(List<EmployeeUInfo> objInsert)
{
try
{
DataTable dtInsertRow = new DataTable();
[Code]....
Databases :: Specify A Parameter In Query To As/400 Db2?
Jan 10, 2011Trying to modify an existing gridview in an aspx to access a db2 table on an iseries server. The iseries seems to have problems with the parameter specified in the query as @parameter giving a @parameter does not exist in table error. When specifying the gridview in VS the wizard did not recognize that the @parameter was a parm and prompt for the control etc. where it could be found. Of course there is no problem when accessing a mssql server table. Can someone help me with how to connect properly to the iseries and how to pass a parm on my query?
View 1 RepliesHow Can Search A Keyword From A Database(all The Tables) Using A Single Query
Oct 2, 2010i am developing a web site in Asp.Net using Visual Studio 2008.i want to know that how can i search a keyword that will be entered by the user, i want the key word should be searched in complete database(all the tables)using a single query.I am using sql database. how can the keyword be searched using like parameter...
View 1 RepliesDataSource Controls :: LINQ And C# - Accessing More Then 2 Tables In A Query
Apr 23, 2010As the title sugests, I am missing a (basic?) concept as I teach myself asp.net, linq, and C#. It has been awhile since I've done anything object oriented, so I don't know how much that is impacting this gap in my understanding. Anyhow, here is what I am trying to do. I have three SQL Server tables: PERSON, POSITION, AREA. There is a 1 to many relationship between PERSON and POSITION, and a 1 to 1 relationship between POSITION and AREA. Given the following code I verify who the person is who has logged into the browser:
[Code]....
I want to be able to return all of the AREAs the person is able to access, based on the position they currently hold. I am able to easily do this in a SQL Server query, and I am sure I can do this with a SQL stored procedure once I pass the EMPLOYEE_ID to the procedure. However, I would rather do this in the page_load event, and load the returned results into gridview1 for the viewer. The issue I am running into is in building the LINQ query. When I try to build it, I can only get access to two of the three tables, depending on which table I select with db. Is it possible to access all three tables in the same query?
C# - Execute LINQ Query When The Tables Name Stored In A Variable?
Jul 30, 2010I want to do execute a LINQ query, and I have the name of the table to query stored in a variable:
string tableName = "SomeTable";
DataContext db = new DataContext();
var vResult = from t in db.tableName where t.Id = ....
DataSource Controls :: Sum Data From Two Columns In Different Tables - SQL Query
Feb 9, 2010I am trying to create an application in which there is a summary of outstanding payments.
One table is Table_Bills.
The other table stores records of Payments made and is called Table_Payments.
In summary i want to show 3 figures - each in separate one field datagridview with a data_source in separate data_adapter:
1) Ammount_Due 2) Amount_Paid 3) Balance.
The first two are no problem but the last is giving me a headache.
I tried this:
SELECT SUM(DHB_New_Jobtable.DayWage) - SUM(DHB_Payments.Ammount) AS Expr1
ADO.NET :: Need To Query Atleast 35 Tables Using Linq To Sql(SQL Server Database?
Aug 27, 2010I am a little new to this concept so bear with me.1) I need to query atleast 35 tables using linq to sql(SQL server database) . I am not able to add all the database entities in Linq to sql classes?
2)(View Model issue) When I use List<Reportcollection> and also List<Receipt> to convert the result then its giving an error that "Cannot convert list<anonymous> to list<string>"
Databinding Multiple Tables Linq Query To Gridview?
Jun 3, 2010how can I display a linq query in a gridview that has data from multiple tables AND allow the user to edit some of the fields or delete the data from a single table?
I'd like to do this with either a linqdatasource or a linq query. I'm aware I can set the e.Result to the query on the selecting event. I've also been able to build a custom databound control for displaying the linq relations (parent.child).
However, I'm not sure how I can make this work with delete? I'm thinking I may need to handle the delete event with custom code.
DataSource Controls :: Can Get Two Tables In Only One Query With LINQ To Entities
May 20, 2010can get two tables in only one query with LINQ to Entities
Code for example:
[Code]....