How To Delete All The Data?
Apr 21, 2008
Hi,
I want to delete all the data in all tables.
But I have question for this.
1. I do not know how to loop over all the tables and delete data.
2. the database have database diagram so there are dependency with tables so the delete order is hard to decide.
a solutions is:
I temporarily delete the diagram and I loop all the tables and delete all the data.My question is how to loop over all the tables?
Please give me a idea.
Thanks
Mark
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May 19, 2012
I am using Master Data Service for couple of months now. I can load, update, merge and soft delete data in MDS. Occasionally we even have to hard delete data from MDS. If we keep on soft deleting records in a MDS table eventually there will be huge number of soft deleted records. Is there an easy way to hard delete all the soft deleted records from all MDS tables in a specific Model.
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May 25, 2000
Hello,
This probably has been addressed before but I was unable to get the search to work properly on this site.
I am needing a script/way of deleting all rows from a DB with the exception of one record left for each row that has duplicate column data. Example :
Row 1
Field1 = 12345 Field2 =xxxxx Field 3=yyyyy Field4=zzzzz etc.
Row 2
Field1 = 12345 Field2 =zzzzzz Field 3=xxxxxx Field4=yyyyyy etc.
Row3
Field1 = 12345 Field2 =20202 Field 3=11111 Field4=zzzzz etc.
Row 4
Field1 = 54321 Field2 =xxxxx Field 3=yyyyy Field4=zzzzz etc.
Etc. Etc.
I want to be able to find the duplicates for Field1 and then delete all but 1 of those rows.( I don't care which one I keep just so only one is left.) The data in the other fields may or may not be unique.
I know how to find the duplicates it's just the deleting part I am having problems with. Any help would be much appreciated. Thanks,
Kerry
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Aug 18, 2015
How to purge data in transaction table or we can delete some data and store in separate table in data warehouse?
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Jun 28, 2007
Hello I have a little problem with deleting data from database. I have to tables
Category:
CategoryID,CategoryName,CategoryImageID - collumns
CategoryImage - table
CategoryImageID,CategoryImage - collumns
I have foreign key between Category.CategoryImageID and CategoryImage.CategoryImageID
How can I delete category from Category table.
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Jun 21, 2004
Hi,
i like to delete data. I can read and write into the database. But somehow i cant delete data from my Microsoft SQL Server. Always get error on CanUpdate().
Did i forgto something ???
CODE::::
void CListAllDlg::OnBnClickedDelete()
{
CDatabase db;
CProducts m_pData(&db);
CString m_ListItem="";
int nItem=0;
POSITION pos = m_list_all.GetFirstSelectedItemPosition();
//open Recordset
if(m_pData.Open()==0)
{
AfxMessageBox("Datenbank Verbindung fehlgeschlagen", IDOK);
return;
}
if (MessageBox("Möchten Sie diesen Datensatz wirklich löschen?","Datensatz löschen", MB_YESNO | MB_ICONQUESTION) == IDYES)
{
do
{
m_ListItem = m_list_all.GetItemText(nItem,1);
//delete data
while(!m_pData.IsEOF())
{
//found data then delete
if(strcmp(m_pData.m_articel,m_ListItem)==0)
{
m_pData.Delete(); //delete data in database
m_pData.Update(); //confirm & update database
nItem = m_list_all.GetNextSelectedItem(pos);
m_list_all.DeleteItem(nItem); //delete data in listbox
MessageBox("Datensatz wurde erfolgreich gelöscht","Datensatz löschen", MB_OK);
}
m_pData.MoveNext();
}//end while
}while (pos != NULL);
m_pData.Close();
}//end if
}//end OnBnClickedDelete
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Jan 12, 2004
Hi,
I have two tables.
CREATE TABLE [one] (
[roleno] [int] NOT NULL ,
[schno] [int] NULL ,
CONSTRAINT [PK_one] PRIMARY KEY CLUSTERED
(
[roleno]
) ON [PRIMARY] ,
CONSTRAINT [FK_one_two] FOREIGN KEY
(
[schno]
) REFERENCES [two] (
[schno]
)
) ON [PRIMARY]
GO
CREATE TABLE [two] (
[roleno] [int] NULL ,
[schno] [int] NOT NULL ,
CONSTRAINT [PK_two] PRIMARY KEY CLUSTERED
(
[schno]
) ON [PRIMARY] ,
CONSTRAINT [FK_two_one] FOREIGN KEY
(
[roleno]
) REFERENCES [one] (
[roleno]
)
) ON [PRIMARY]
GO
(I fact i created Primary & Foreign keys after inserting data in both of these tables.)
I want to delete data from these two tables.
How do i do that...Any Ideas?
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Jan 9, 2004
I'm using a DTS package to import a large CSV file. There is a particular column that contains text or numbers. I want to delete the row if that column has a number, I've used IsNumeric in the selection portion of the statement, but can't figure out how to use it as part of my where clause.
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Aug 8, 2000
How can I erase all data from every table in a SQL Server 7.0 database and leave all constraints and relationships in tact? I'm wanting to have just the structure or frame work with no data in any table. There are over 130 tables so I need to automate this. Any Suggestions?
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May 9, 2004
Hi there,
How to delete all the data which are more than week old in the SQL Server?
Thanx
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Apr 7, 2008
I want to reset my application and delete all the data in all tables.
But I have question for this.
1. I do not know how to loop over all the tables and delete data.
2. the database have database diagram so threre are dependency with tables so the delete order is hard to decide.
Please give me a idea.
Thanks
Mark
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Jul 20, 2005
HiI have a SQL2000 server with 128m rows of data. I want to delete about65m of that. So far I have bcp'ed the relevent data out and put theminto another SQL database.We have a small amount of space for our transaction log so I cannotdelete all 65m rows in one go. So far I have been doing them is 0.5mchuncks, but it is extremly slow.Would a faster way be to bcp the data I wan to keep and truncate thetable and bulk import them in again ?What hapnes to log size in when builk import is happening and is thereanother way of doing this ?Thanks for any help
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Nov 6, 2007
hi how to empty a table (delete all the data in it) using sql commands in asp.net 2.o and vb.net 2005please help .thanks
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Feb 3, 2008
Hey everyone,
Currently I have a problem that with a gridview delete command because the database I currently want to delete from is a PK to 1 other table. So how can I delete from that "Membership" table before I use the gridview to delete from the "Events" table? Here is a very shortened version of the tables
Events
EventID (PK)
Membership
MembershipID
EventID (FK)
UserID (FK)
I have to delete ALL the members from the event in the membership table first before I can delete the actual Event...So how can I do that when the gridview only allows you to delete from 1 table, if I understand this correctly.
Here is the sqldatasource delete command as of right now.
DeleteCommand="DELETE FROM [Events_Events] WHERE [EventID] = @original_EventID"
Obviously I am getting a error because of the FK.
Thanks,
Chris
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May 26, 2008
Hi,
How do I delete data which is a Foreign Key in another table?
For example;
string query = "DELETE * from user_details WHERE user_ID = '" +userID.Text+ "';
The user_ID is the Primary Key in the user_details table and also a Foreign Key in other tables.
Thank you. (:
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Mar 11, 2006
The function that is supposed to delete a row, is not working. The function is called, and the windows is refreshed, but the row is not deleted.Can anyone see anything wrong with this code:public static void DeleteBlog(int original_BlogID) { string insertCommand = "DELETE FROM Blog WHERE BlogID = @BlogID"; SqlConnection myConnection = new SqlConnection(Blog.ConnectionString); SqlCommand command = new SqlCommand(insertCommand, myConnection); command.Parameters.Add(new SqlParameter("@BlogID", original_BlogID)); myConnection.Open(); command.ExecuteNonQuery(); myConnection.Close();}
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Aug 27, 2007
This is a SQL 2005 production server.
I have to delete around 51 million rows from a table which has 149 million rows.
Can't use truncate option as the other rows in the table are still needed.
How can I delete the rows without filling up the tempdb ?
If the tempdb fills up I can't bounce the server.
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Jan 12, 2004
I am trying to delete data from a table prior to populating with new data via a trigger if certain critria matches to eliminate duplicates. I have copied the trigger below. The syntax checks ok but I get any error message saying 'Incorrect syntax near 'GO'. 'ALTER TRIGGER' must be the first statement in a query batch' when I try to save.
Can someone tell me if this is possible please.
IF EXISTS (SELECT * FROM hold_complete
WHERE fkey = hold_complete.fkey AND actiontext = 'hold' and Subactiontext = 'pending user')
delete from hold_complete where hold_complete.fkey = fkey
GO
CREATE TRIGGER tr_hold_complete ON CallsHistory
for INSERT AS
SET TRANSACTION ISOLATION LEVEL READ UNCOMMITTED
insert hold_complete
select ins.AddedDT, ins.fkey, ins.actiontext,
ins.subactiontext, con.emailaddress, ca.loggeddt,
(con.forename + ' ' + con.surname) as contactname,
ca.summary, ca.notes,co.coordinator, co.coordinator,getdate(), ca.status,ca.lastsubaction,getdate(),ca.dateopened ,ca.companyname,getdate(),(null),ch.notes
FROM inserted as ins with (nolock)
join calls as ca with (nolock)on
ins.fkey = ca.callid
join contact as con with (nolock) on
ca.contactid = con.contactid
join company as co with (nolock) on
ca.companyid = co.companyid
join callshistory as ch with (nolock) on
ins.historyid = ch.historyid
where ins.actiontext = 'hold' and ins.Subactiontext in ('completed','pending user')
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Sep 24, 2007
Table Strucure - :
TestEven(TestNo,EmpNo,TestDate)
I jst want to write a stored procedure to delete all data which is 2 years old. thank you in adavance.
Hussain
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Feb 6, 2008
Is there a SQL statement that will delete the primary key data and data in the other tables that depend on that primary key?
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Nov 23, 2005
Hello,I read several articles of newsgroup about the bulk delete, and I foundone way is to:-create a temporary table with all constraints of original table-insert rows to be retained into that temp table-drop constraints on original table-drop the original table-rename the temporary tableMy purge is a daily job, and my question is how this work on a heavyload operational database? I mean thousand of records are written intomy tables (the same table that I want to purge some rows from) everysecond. While I am doing the copy to temp table and drop the table whathappens to those operational data?I also realized another way of doing the bulk delete is using BCP:1) BCP out rows to be deleted to an archive file2) BCP out rows to be retained3) Drop indexes and truncate table4) BCP in rows to be retained5) Create indexesAgain the same question: When I'm doing the BCP is there any insertionblocking to my original table? What happens to my rows meantime to beinserted?Does BCP acquire an exclusive lock on the table which prevents anyother insertion?Does any one have an experience with a BCP command for querying out 2million records, and how long will it take?I appreciate your help.
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Jan 8, 2008
I have written code to combine, delete redundant data in my system. The table structure remains the same, except I changed some INTs to TINYINTs.
When I do sp_spaceused, it tells me that number of rows is smaller(which is correct), but the datasize, and index_size is significantly larger AFTER the deletions.
I tried using shrink, but that doesn't seem to change anything.
When I right-click the database, and choose PROPERTIES, it also confirms that the database got significantly larger.
I am confused about how deleting data and changing to TINYINTs could make my database bigger. What would cause this?
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Feb 15, 2007
In SQL Server 2005 SP1 we have a Transactional Replication with only this property in the articles:
Action: Delete data...
Ant this property in the publication:
Don't send schema changes
We have in the foreign keys NOT FOR REPLICATION = NO (Exigir para replicacion = "Si" in Spanish).
We have one problem and one doubt:
The problem is that when the sincronization goes wrong the table in the suscriptor is empty !!!!!. It seems that goes wrong because the foreign keys. The question is = Is necessary that NOT FOR REPLICATION = YES in all the tables?, we don't want any check in the sincronization.
Why the destiny tables appears empty?. Is very dangerous.
Thanks.
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Feb 23, 2008
Hello,
I would like to delete all data from an excel sheet except the headers row.
Is there any way to do this using Openrowset with JET or something like that?
Thanks
Philippe
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Oct 22, 2007
my table structure is
id field1
1 i am from india
2 i am from usa
3 i am from delhi
So i want to remove common data from field1 , means after run the query table should be like
id field1
1 india
2 usa
3 delhi
thanks in advance
saumitra tamrakar
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Jul 26, 2007
i am using asp.net vb, i have 2 table show as below if i want to delete the forumid 1 row,then how would i delete the topic table who belong to the forumid 1.
how would 1 do it if i am using gridview
Forum table
Forumid | Forumname
1 | hi
2 | me
Topic table
Topicid | Forumid | Topicname
1 | 1 | yo
2 | 1 | everyone
3 | 1 | google
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Sep 6, 2013
how to find who delete/Truncate the data from table ,because i don't have any trigger on the table.
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Nov 5, 2013
i have to delete data from a table which is older than 2 weeks, how can i use a cursor to do it.
I will have to place the query in a SQL job and run that weekly once
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Apr 22, 2015
I am using SQL 2012 SE. I have 2 databases say A and B with same structure and relationships. There are 65 tables in each database. A is already replicating data to database C for 35 tables. Now I need to move data from A to B which is greater than getdate()-1 everyday for all the tables and once the move is done I need to delete this data from A. And the same thing the next day and everyday. Since this is for 65 tables its challenging to identify the insert order. Once the insert order is identified the delete order will be the reverse of it.
Is there a tool or any SP that could generate the insert order script? The generate scripts data only is generating the entire data and these databases are almost 400GB. Some tables have 200Mil+ rows. So it takes forever.
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Oct 10, 2007
Hi all,
How to update a particular value in xml file which was loaded into sql server 2005 database
which is of xml-type
How to DELETE a particular value in xml file which was loaded into sql server 2005 database
which is of xml-type
how to INSERT a particular value in xml file which was loaded into sql server 2005 database
which is of xml-type
update XmlCatalog1 set Document1.modify('delete /X12_U1_837/X12_Q1_837/header/ISA//ISA_Authorization_Information_Qualifier') where id=2
----------
The error which i am getting is
XML Validation: Invalid content. Expected element(s):ISA_Authorization_Information_Qualifier where element 'ISA_Authorization_Information' was specified. Location: /*:X12_U1_837[1]/*:X12_Q1_837[1]/*:header[1]/*:ISA[1]/*:ISA_Authorization_Information[1]
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Jul 23, 2005
I encounter one weird problem, I have a database with around 7 GB ...when I delete a bunch of data from it, it suppose to reduce thedatabase file size, but weirdly, the file size increase to 8 GB.Wondering why. Is it suppose to be like that?Is it the architecture is designed to work like that?Is there any way for me to reduce the database file size?Thanks.Peter CCH
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Nov 11, 2005
When running the following SQL statements, I get the same results.Though I need to count only -30 days. Both statements below alsoconsider the time of the day as well, which is not desiredDELETE FROM MNT_RWHERE MNT_R.TIMESTAMP < GETDATE()- 30DELETE FROM MNT_RWHERE MNT_R.TIMESTAMP < DATEADD(d, -30, GETDATE())Here is the format of the values in columnMNT_R.TIMESTAMP2005-08-09 06:06:44.5772005-08-09 06:06:46.8102005-08-09 06:06:49.060So, since data are inserted into the MNT_R table every few seconds, mydelete statement will delete different number of rows, according to thetime of the day it runs.Can you please post a SQL query that will not give me this headache?thanx a lot all
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