I have three tables nameTbl contains the following columns: BarID, Name, Description locTbl contains locID and Location namelocationTbl contains BarID(from the nameTbl) and locID(from the locTbl)
View 2 RepliesTo write a join query with or condition. It means a query has two inner join, here it is possible to fetch the records, if one inner join is true and other is false. I got a record when only two join conditions are true.
View 1 Replieslet me know the types of joins available in SQL, so far i've used only Inner joins and left joins.
But have been clear and comfortable using inner joins only.
give me a more clear picture on all the types of joins available and their importance.
I have a gridview with a sqldatasource with SelectCommand as below:
[Code]....
but it's not workling.....
I need to join some tables to get the matching records. I often have to ask around to see how certain tables could be joined. Is there any way to query the information schema or some thing else to see what columns/values match in certain tables in order to figure out how tables should be joined.
View 4 RepliesAnyone know if it's possible to inner join tables using two different connection strings? I'm using vb.
View 3 Repliesi have two queries they are:
query1:
select CustID,NoOfChits from tblCust1 where [Group]='A' and CustID='a001'
query2:
select count(TKCustID) as Taken from tblAuctionGroup where [Group]='A' and TKCustID='a001'
Results of 1st query was:
----------
CustID NoOfChits
a001 2
Results of 2nd query was:
----------
Taken
4
But i want to like below:
--------------------------
CustID NoOfChits Taken
a001 2 4
in the above queries, 1st query displayed two columns and 2nd query displayed one column. but i would like to append the both results in single table or single record, i mean all results should be in same row in same result.
I can join with a regular SQL table fine but this won't work:
SELECT normalTbl.*, tmp.fld1 FROM normalTbl
LEFT JOIN #Temp tmp ON tmp.joinID = normalTbl.joinID
All tmp.fld1 values are shown as NULL even though fld1 contains valid values and the joinID matches the normalTbl (when I call SELECT * from #Temp). If I do the same exact thing with a regular table, fld1 shows the correct value. What am I doing wrong?
I am trying to update a Single Record in a table. I also trying to join columns of that single record with another table to update prices the prices of that record.
Here is my current query.
[Code]....
pull data from 3 databases, same query with the same result set (data can vary) and i want to combine those results in to a single datareader so i can easily dump it to a gridview.
View 2 RepliesI would like to create a gridview where all of the items in one table are listed and a checkbox is checked if that item also shows up in another table. The difficulty comes in the fact that table are not only in different databases, but possibly on different servers.
Is there any way to do this via ASP.NET connection strings, so that it doesn't matter where the databases live? I'd rather use connection strings, because I don't want to hard-code credentials into the queries (OPENROWSET or whatnot).
How to use Left and Right Outer Join in C# using Linq with Eg.
View 2 RepliesI was wondering in which order MSSQL executes a command. Say if I have this statement:
select top 1 * from table1 t1
inner join table2 t2 on t2.productid = t1.id
order by t1.buydate desc
what is done first:
- find if there's a matching record in t2 through the join
OR
- sort the results in t1 based on the buydate?
And when I have a large database with many records in both t1 and t2, what are possible performance issues I might hit?
how to do this query in EF1:
[Code]....
i am trying to use predicatebuilder for a linq to sql query but i cant seem to get a join to another table. in my model, i have a table for applicants and another for job applications.. each applicant can have several job applications.
i expect in linq to sql to be able to do something like;
p.jobapptable.jobappdate where p is the applicant.
this isnt the case..i am trying to use predicatebuilder to search through applicants based on the job applications they have made? how`can i get linq to sql to show the foreign key relationships?
I have 2 different datatables. 2 datatables from 2 different servers.
My first datatable is this:
SELECT DISTINCT a.name, a.create_date, a.Modify_Date, a.Object_Id
FROM dbname.sys.objects a
and my 2nd datatable is the same, but from a different server connection string
SELECT DISTINCT b.name, b.create_date, b.Modify_Date, b.Object_Id
FROM dbName.sys.objects b
Basically, I want to compare which procedures are on one server and not the other (dev and prod)
So after I have my 2 datatables i want to create a data relationship on the name and then do a left join to see whats in a and not b.
my stored procedure is always extract some data into temp table such as"select name,address,content into #TEMP1 from table1,table2,table3"
finally, select another table together with #TEMP1 to extract all desire data from one queryselect T.name,T.address,T.content,C.other from #TEMP1 T, otherTable C
where T.ID=C.IDI would like to ask if i want to join one more table T2 into final query with "otherTable left C outer join on C.ID=T2.ID"
I have two tables namely "CategoryMapping" and "PartnerCategory"...The partnercategory table has foreign key with categorymapping on CategoryID...
let us say categorymapping should be filed first then partnercategory should be filed based on the categories defined in categorymapping. For example my two tables have the following data:
[code]....
i have a form that my i use to look up whether or not there is an email address in the database. i wrote a query with this basic structure:
select *
from table A, table B
where table A.email = "email" or table b = "email"
i though that would return all instances that the email occurred in either table. what i am getting back is a bunch of null or other unrelated records from table A with a matching email in table B. the thing is, these two tables primary key to join them. i thought i wouldnt need to do that though in this case.
here is the actually query i am using if it makes things more clear:
select lm.cemailaddr, lm.b1emailadd, b.emailaddr
I need to retirve data from two tables...when i click a value in dropdown list, i need to retrieve values from two tables based on that id( which i have selected in dropdown)..so when i have written query ( "Select assign_issue.issue_assigned_to, assign_issue.created_on,assign_issue.last_Date,
issue_register.issue_desc,issue_register.issue_Priority from assign_issue INNER JOIN Issue_register ON assign_Issue.Issue_ID = issue_register.Issue_ID where issue_register = '" + ddlissueid.selecteditem.text + "'")..query is executing ..when it comes to dr = cmd.executereader()..Dr is unable to read..it is showing false when i trace..unable to read into while loop.
What will be the equivalent GroupJoin lambda expression in LINQ when I do this.
Dim fruit_salad = (From fruits In _DataContext_Fruits _
Group Join fruitRipe In _DataContext_FruitRipe On fruitRipe.fID Equals fruits.fID Into Group
From fruitty_lecious In Group.DefaultIfEmpty() _
[code]...
I'm trying to achieve an outer join in LINQ but I'm not getting my desired result.There are two relational tables between Fruit_Name and Fruit_Ripe.The Fruit_Ripe table has a boolean field (IsRipe) that I use in my condition.The condition let me show all fruits that is not yet rippen (false) or fruits that isn't inputted yet in Fruit_Ripe table.
Dim fruit_salad = From myFruit In _DataContext.Fruit_Name
Group Join myRipeFruit In _DataContext.Fruit_Ripe On myFruit.fId Equals myRipeFruit.fId Into Group
From fruitty In Group.Where(Function(d) Not d.isRipe =
[code]...
I have set up Linq to sql. I now need to fill a formview with a select that does a join across a few tables. Have not been able to find any example or tuts that go beyond the simple select. Any suggestions? Can this even be done?
View 1 RepliesI want to delete recodrs from based on some join condition between two tables.
One table belongs to my DB ( table name : FeeDetails)
and second table ( TargetTable) is on different server.
I have delete records from TargetTable table based on join condition between two tables.
I am able to select records
[Code]....
I have two tables:
GalleryAlbums and GalleryPhotos.
I would like to Select all entries in the GalleryAlbums table, but Order them (DESC) by date values in a column (upload_date) on the GalleryPhotos table. Both tables have a column "album_id"
A little confused how I might write this statement.