I am a beginner in Ms-Sql,so kindly help me with this query:-
Following is the table:-
Name Phone email
John 4564 john@abc.com
John 4564 john@abc.com
John 4564 john@abc.com
John 4564 john@abc.com
How can i manage to delete only 2 rows out of these 4 rows
Hello,I ended up with two identical rows in one table. They should have differences but I cannot update one, as it tries to update both of them, or throws an error. How to update only one row, and leave other as is?
View 10 Replies View RelatedI'm using a query to see how many times an action was recorded on a person. The query works, it returns this:
John Smith 1
John Smith 1
John Smith 1
Jane Doh 1
Jane Doh 1
Al Johnson 1
but I need it to return totals like this
John Smith 3
Jane Doh 2
Al Johnson 1
This is the query I am using:
Select Player.First_Name, Player.Last_Name, COUNT(Action.Employee_ID)
from Player INNER JOIN
PlayerVisit on PlayerVisit.Player_ID = Player.Player_ID
join Treatment on Treatment.Visit_ID = PlayerVisit.Visit_ID
join Action on Treatment.Action_ID = Action.Action_ID
group by Player.First_Name, Player.Last_Name, Action.Employee_Id;
I have an "insert into" statement that creates two identical rows in a table, with this statement:
delete from [table] where [column] = @parameterINSERT INTO [table]([fields]) VALUES ([parameter values])
This is the code-behind that performs the insert:
Dim dbConn As New SqlConnection(strConn)Dim cmd As New SqlCommand("sp_CreateUser", dbConn)cmd.CommandType = Data.CommandType.StoredProcedurecmd.Parameters.AddWithValue("@UserID", strUserID)cmd.Parameters.AddWithValue("@UserName", strUserName)cmd.Parameters.AddWithValue("@Email", strEmail)cmd.Parameters.AddWithValue("@FirstName", strFirstName)cmd.Parameters.AddWithValue("@LastName", strLastName)cmd.Parameters.AddWithValue("@Teacher", strTeacher)cmd.Parameters.AddWithValue("@GradYr", lngGradYr)Using dbConndbConn.Open()cmd.ExecuteNonQuery()dbConn.Close()cmd.Dispose()dbConn.Dispose()End Using
I wonder if it inserts twice due to a postback issue. Is there a way to stop two rows from being created in the first place with the same "insert into" statement? I'd appreciate any advice.
I am trying to create an exception report that will show the difference between two versions of the same row. (Combination of two different sources in sql, with source 1 having childID = 0 and the other source having childID = 1; parentID is the link between them)
The results are as follows:
ParentID - ChildID - Col1 - Col2 - Col3
1 - 0 - AA - BB - CC
1 - 1 - AA - BF - CC
2 - 0 - GG - NN - TT
2 - 1 - DE - NN - TA
3 - 0 - etc
3 - 1 - etc
4 - etc
How can I render the differences in red in RS?
I need to transform Foxpro table to SQL Server table with merging all rows into one where all column values are the same except one . For this the only column with the different values , I want them also to be merged as coma or space delimited string. The question whether SSIS is a good candidate for this kind of data munging and also would be interested to know knowing as many as possible ways of doing that. Surely I may produce Foxpro script in 5 minutes which wil do that and be a pre-processor action before SSIS starts.
View 3 Replies View RelatedCREATE TABLE [RS_A] ([ColA] [varchar] (10)[ColB] [int] NULL)CREATE TABLE [RS_B] ([ColA] [varchar] (10)[ColB] [int] NULL)INSERT INTO RS_AVALUES ('hemingway' , 1)INSERT INTO RS_AVALUES ('vidal' , 2)INSERT INTO RS_AVALUES ('dickens' , 3)INSERT INTO RS_AVALUES ('rushdie' , 4)INSERT INTO RS_BVALUES ('hemingway' , 1)INSERT INTO RS_BVALUES ('vidal' , 2)I need to find all the rows in A which do not exist in Bby matching on both ColA and ColBso the output should bedickens 3rushdie 4So if i write a query like this , I dont get the right result setSELECT A.ColA, A.ColBFROMRS_A AINNERJOIN RS_B BONA.ColA <B.ColAORB.ColB <B.ColBBut if i do the following, i do get the right result, but followingseems convoluted.SELECT A.ColA, A.ColBFROMRS_A AWHERE ColA + CAST(ColB AS VARCHAR)NOT IN (SELECT ColA+CAST(ColB AS VARCHAR) FROMRS_B B)
View 6 Replies View RelatedWe have written an application which splits up our customers data intotheir individual databases. The structure of the databases is thesame. Is it better to create the same stored procedures in eachdatabase or have them in one central location and use the sp_executesqland execute the generated the SQL statement.Thank you.Mayur Patel
View 4 Replies View RelatedI'm using SqlDataSource and an Access database. Let's say I got two tables:user: userID, usernamemessage: userID, messagetextLet's say a user can register on my website, and leave several messages there. I have an admin page where I can select a user and delete all of his messages just by clicking one button.What would be the best (and easiest) way to make this?Here's my suggestion:I have made a "delete query" (with userID as parameter) in MS Access. It deletes all messages of a user when I type in the userID and click ok.Would it be possible to do this on my ASP.net page? If yes, what would the script look like?(yes, it is a newbie question)
View 2 Replies View RelatedI ran the following query in Query Analyzer on a machine running SQL Server 2000. I'm attempting to delete from a linked server running SQL Server 2005:
DELETE FROM sql2005.production.dbo.products
WHERE vendor='Foo'
AND productId NOT IN
(
SELECT productId FROM sql2000.staging.dbo.fooProductList
)
The status message (and @@ROWCOUNT) told me 8 rows were affected, but nothing was actually deleted; when I ran a SELECT with the same criteria as the DELETE, all 8 rows are still there. So, once more I tried the DELETE command. This time it told me 7 rows were affected; when I ran the SELECT again, 5 of the rows were still there. Finally, after running this exact same DELETE query 5 times, I was able to remove all 8 rows. Each time it would tell me that a different number of rows had been deleted, and in no case was that number accurate.
I've never seen anything like this before. Neither of the tables involved were undergoing any other changes. There's no replication going on, or anything else that should introduce any delays. And I run queries like this all day, involving every thinkable combination of 2000 and 2005 servers, that don't give me any trouble.
Does anyone have suggestions on what might cause this sort of behavior?
I had created a trigger which sees that whether a database is updated if it is its copy the values of the updated row into another control table now I want to read the content of control_table into BIzTalk and after reading I want to delete it.Can any one suggest the suitable ay to do this?
View 3 Replies View RelatedI have a SQL script to insert data into a table as below:
INSERT into [SRV1INS2].BB.dbo.Agents2
select * from [SRV2INS14].DD.dbo.Agents
I just want to set a Trigger on Agents2 Table, which could delete all rows in the table , before carry out any Insert operation using above statement.I had below Table Trigger on [SRV1INS2].BB.dbo.Agents2 Table as below: But it did not perform what I intend to do.
USE [BB]
GO
/****** Object: Trigger Script Date: 24/07/2015 3:41:38 PM ******/
SET ANSI_NULLS ON
GO
SET QUOTED_IDENTIFIER ON
[code]....
Stepping thru the code with the debugger shows the dataset rows being deleted.
After executing the code, and getting to the page presentation. Then I stop the debug and start the
page creation process again ( Page_Load ). The database still has the original deleted dataset rows.
Adding rows works, then updating works fine, but deleting rows, does not seem to work.
The dataset is configured to send the DataSet updates to the database. Use the standard wizard to create the dataSet.
cDependChildTA.Fill(cDependChildDs._ClientDependentChild, UserId); rowCountDb = cDependChildDs._ClientDependentChild.Count; for (row = 0; row < rowCountDb; row++) { dr_dependentChild = cDependChildDs._ClientDependentChild.Rows[0]; dr_dependentChild.Delete(); //cDependChildDs._ClientDependentChild.Rows.RemoveAt(0); //cDependChildDs._ClientDependentChild.Rows.Remove(0); /* update the Client Process Table Adapter*/ // cDependChildTA.Update(cDependChildDs._ClientDependentChild); // cDependChildTA.Update(cDependChildDs._ClientDependentChild); }
/* zero rows in the DataSet at this point */ /* update the Child Table Adapter */ cDependChildTA.Update(cDependChildDs._ClientDependentChild);
Hi All,I am designing a purge process for a db that has grown to almost 200GB.My purge process will remove about 1/3 of the 500 million rows spreadover seven tables. Currently there are about 35 indexes defined onthose seven tables. My question is will there be a performance gain bydropping those indexes, doing my purge, and re-creating the indexes. Iam afraid that leaving those indexes in place will create a lot ofextra overhead in my delete statements by having to maintain theindexes. I know that it could take many hours to rebuild the indexesafterward, but I am planning on doing that anyway. The reason that Iwant to know whether I should drop the indexes ahead of time, is I maynot be able to do the entire purge at once and the tables may need tobe accessed between purges. If this occurs, I will need to have thoseindexes in place.So do I drop the indexes before the purge and re-create them later ordo I leave them in place and re-index them afterward?Thanks In Advancep.h.
View 12 Replies View RelatedHi
I am trying to delete rows in temp1 which are exist in temp2
delete from dbo.temp1 as a
inner join temp2 as b
on a.regionname=b.regionname
and a.servicecode=b.servicecode
and a.directioncode=b.directioncode
and a.destorigflag=b.destorigflag
I am getting error :
Incorrect syntax near the keyword 'as'.
thanks in advance
subash
Hi there,
I have two tables a,b, with the same columns.
How do I delete all the data from a that has the same entry as b?
Thanks for all the answers
I have a table that I would like to only keep the top 10 rows for each username. How can I kep the top 10 and delete the rest?
View 17 Replies View RelatedHi,
I'm really not very good at SQL sadly, so would really appreciate any help.
I'm basically working on a website that has a chatroom. I want it so the chatroom table only holds, say 15 lines of chat, then once a new line of chat is entered the last line in the table is deleted, so the table always has a maximum of just 15 rows.
The fields are:
MessageID
Poster
Message
DateTime
I've tried my best, but just don't know how to do it.
I suppose it's something like:
SELECT TOP 15 * FROM Chatroom ORDER BY MessageID DESC - this gives me the last 15 rows.
Then I need a delete statement to delete the rest?! Sorry, I am very bad at SQL, so any help would be great. This is written in a stored procedure.
Can the stored procedure pick up whether there are 15 or more rows in the table, and if so then delete all bar the newest 15 rows of chat?
To summarise: I want a stored procedure that checks if 15 or more rows exist, if they do then delete all bar the newest 15 rows.
Thanks,
Ricky
Hi..
DELETE FROM table1 WHERE projektID=5
there are 500000 rows that has projektID=5.. and when i run the query the hardrive is working for a couple of minutes and then stops. and NOTHING has happened. not a single row has been deleted?.. cant the DELETE statement handle that many rows or?. or is there another way i can delete these rows?.
Hii want to delete a row in my database but the problem is, i cant delete it as other table rows is linked to it. I have to delete all the rows thats linked to the row i wanna delete first.Is there a easier way to delete the row and all the rows thats linked to it? i wanna code it to do it.an suggestions?
View 1 Replies View RelatedI have a table which looks as follow:
field1 field2 field3 field4 field5 ......
A B C A X ......
A B C B Y ......
A B C C Z ......
A B C A Y ......
. . . . . ......
I want to delete all the rows except one row. Anybody can help?
Thank you very much.
How do you delete duplicate rows in a table so only one row is left in the table, using T-SQL.
View 1 Replies View RelatedCAN ANYBODY REPLY FOLLOWING QUESTIONS. I WANT TO DELETE DUPLICATE ROWS
IN MY TABLE WITHOUT USING TRANSACTION TABLE. AND ONE MORE QUESTION HOW
TO GET YESTERDAY DATE BY USING ISQL WINDOW.
THANKS
JK
Suppose that we have the following rows in a MSSQL table :
1administrateur1NULLNULL
2administrateur2NULLNULL
1administrateur1NULLNULL
2administrateur2NULLNULL
How to remove duplicates (leave only the 2 first rows) ?
Hi,
I have the following query to select duplicate rows from the table. How can i delete them with out using temp table.
select UserName, Title, Name, ColWidth, Sequence
from table1 (nolock))
Group by UserName, Title, Name, ColWidth, Sequence
Having count(*) >1
Any help would be greately appreciated.
Thanks
Hello all,
Is there someway to tell how many rows were affected by a delete statement? A variable perhaps?
Any help would be appreciated!
Brian
How to delete duplicate records from table ? Is there any query for that ?
I am using SQL 2005.
Hi,
This is an easy one.
How do delete rows from a table?
I want to delete all the rows from the last month of a table so i have to be able to pass the month parameter to the delete statement.
Help.. plz.. i think this is an easy one
In my table I have following current data. I want to delete duplicate records from table.I am trying following SQL statement, So I am getting desired output which is orange color in current data. I want to keep the desired output records and other all should be deleted. But complection is that in current data values in C5 and C6 are different.
select C1,C2,C3,C4,COUNT(*) from table_Delete
group by C1,C2,C3,C4
having COUNT(*) >= 1
ORDER BY COUNT(*) DESC
Current Data:
C1 C2 C3 C4 C5 C6
201 203224 325E 00000999
201 203224 325E 00009999
201 203224 325E 10001999
201 203224 325E 30003999
[code]....
declare @a1 table
(id int not null identity(1,1),
phone decimal(18,0),
adress nvarchar(100))
insert @a1
(phone,adress)
[Code] ....
id phone address
----------- --------------------------------------- ----------------------------------------------------------------------------------------------------
1 111 new york
2 111 new york
3 111 new york
4 222 maxico
5 222 mexico
select phone,count(phone) as say from @a1 group by phone having count(phone)>1
phone say
--------------------------------------- -----------
111 3
222 2
How can I remove duplicate phone. For example
after delete
select*from @a1
select*from @a1
id phone address
----------- --------------------------------------- ----------------------------------------------------------------------------------------------------
1 111 new york
4 222 maxico
I wrote this to show for example in my real table have 50000 rows and 1751 duplicate rows.
[URL] .....
How do you delete duplicate rows when there are constraints or like in professional terms as we say "Referential Integrity".
Mr.Madhivanan i hope you remember me. Because it is after all purpose that binds us all together...purpose...it is inevitable Mr.Madhivanan.
Hi,I need to delete rows from my user tables dependant upon there nonexistence from another table:delete studentwhere student_id not in (select student_id from tblStudent)The reasons is convoluted, simplest explanation is that our operationalsystem allows the change of business keys. This wreaks havoc in thedata warehouse.So, I'm look for help on how I can delete rows from tables that have acolumn STUDENT_ID. I'd like the script to search for the tables, thenperform the delete.I don't know where information about user tables are stored, nor how toloop through the results to do the delete.Any Ideas are appreciated.
View 2 Replies View Relatedhi.I've seen ways to delete duplicate rows.Can someone give me some sql to do this?I have a table with varchar table_name_start, varchar column_name,varchar table_name_end;it has rows like this:table1 col1 table2table1 col2 table 3table2 col1 table1I'd lke to delete the rows if they exist with the names swappedaround, i.e. like above since the first and third share a column nameand the table_name_start/end matches the others table_name_end/start,I'd like to delete one and leave the other.I'm scratching my head trying to figure this out.thanks
View 6 Replies View Related