Hi,
I need to lock a table so that Inserts are prevented as well as deleted and
updates. At present I'm thinking this might do it:
SELECT * FROM myTable WITH(UPLOCK)
but then again I'm not sure whether this will cover the insert case.
Thanks,
Robin
Hi! I've some data in a table, and I want to add these records to another table, but I tried yet with select ... Into ... and I lose all the data from this one. I need to ADD the data from table to table. Any suggestion?
Thx
How can I do in order that a table show all its rows in a page?And if the table can only show a number of rows cause arrive to the end of the page show the table in the next page?
Thanks!
Hi,
I want to lock a table so others cannot lock it but able to read it inside transactions.
The coding I need is something like this: set implicit_transactions on begin transaction select * from table1 with (tablock, holdlock) update table2 set field1 = 'test' commit transaction commit transaction
I have tried the coding above, it won't prevent others from locking table1.
So, I changed the tablock to tablockx to prevent others from locking table1. But this will also prevent others from reading table1. So, how can I lock table1 so others cannot lock it but still able to read it?
Thank you for any help
I am giving the following statement outside the begin tran block in a stored procedure:
select * from table1 with (holdlock) where column1 = @colValue
I have the following two questions regarding above situation:
Being outside the begin tran block, will the select statement cause a lock to be held or it has to be within the begin tran block for the lock to be held?
Will the select statement hold a lock only on the row or rows matching the where clause, or it may lock a page or even the entire table in this situation?
Thanks
How can I instruct SQL Server to keep entire table in memory? ie the memory pages should not be swapped to HD.
View 2 Replies View RelatedI'm a newbie to script writing. I'm trying to write a script to copy alldata from a table to the same table in a 2nd database. Both databases areon the same server and are identical in design. I can do this with DTS butwanted a script I could email to a user to run in Query Analyzer.Example:Copy entire table called 'Customers' in the 'Data01' database totable 'Customers' in the 'Data02' databaseI want to overwrite all data in the destination table.Thanks
View 1 Replies View Related
I have table in my SQL database, I want to copy(or insert) one record(one entire row using primary key, which is auto)
I am thinking something like this
Insert Into Table1 (a, b, c,d,e) values(select a,b,c,d,e from Table1 where Primarykey=1 or any number)
telll me how do I do that
maxs
The problem that I am having is that I am not getting the results from an entire table, just a small subset. The sql command is "Select * from login", which has always implied to me, get everything, to end of table, or, until I tell you to stop. I am getting exactly, 10 items as input, and then it stops. I am including the code below in the hopes that someone can spot what it is that I am doing wrong.
The purpose of the routine is to convert a user login database into a new, expanded format.
TIA, Tom
Imports Common.Utility.Utils
Partial Class UserDatabaseConversion
Inherits System.Web.UI.Page
Dim sqlConn As SqlConnection = getSQLConnection(ConfigurationManager.AppSettings("utilityDbName"))
Dim sqlConnN As SqlConnection = getSQLConnection(ConfigurationManager.AppSettings("utilityDbName"))
Dim sqlStringOld As String = "Select * from login"
Dim sqlStringNew As String = "usp_UT_AddNewUser"
Dim buildCnt As Integer = 0
Dim oldUserCnt As Integer = 0
Dim newUserCnt As Integer = 0
Dim oLocation As String = Nothing
Dim errors As Integer = 0
Dim mesg As String = Nothing
Protected Sub Page_Load(ByVal sender As Object, ByVal e As System.EventArgs) Handles Me.Load
getOldUsers()
End Sub
Sub getOldUsers()
Dim odate As Date = Date.Today
Dim sqlCmdOld As SqlCommand = New SqlCommand()
sqlCmdOld.CommandText = sqlStringOld
sqlCmdOld.CommandType = CommandType.Text
sqlCmdOld.Connection = sqlConn
Dim dbReader As SqlDataReader = Nothing
Try
sqlConn.Open()
dbReader = sqlCmdOld.ExecuteReader()
If dbReader.HasRows Then
Do While dbReader.Read()
oldUserCnt += 1
Select Case IsDBNull(dbReader.Item("reg_date"))
Case True
buildNewUser(dbReader.Item("name"), dbReader.Item("password"), dbReader.Item("email"), dbReader.Item("type"), dbReader.Item("org"), dbReader.Item("occupation"), dbReader.Item("location"), odate)
Case False
buildNewUser(dbReader.Item("name"), dbReader.Item("password"), dbReader.Item("email"), dbReader.Item("type"), dbReader.Item("org"), dbReader.Item("occupation"), dbReader.Item("location"), dbReader.Item("reg_date"))
End Select
Loop
End If
Catch ex As Exception
Finally
sqlConn.Dispose()
End Try
If errors = 0 Then
lblMesg.Text = "Conversion completed succesfully.<br />Users In: " & oldUserCnt & " , Users Out:" & newUserCnt
Else
lblMesg.Text = "Conversion comleted with errors.<br />Users In: " & oldUserCnt & " , Users Out:" & newUserCnt & "<br />"
lblMesg.Text += mesg
End If
End Sub
Sub buildNewUser(ByVal oname As String, ByVal opassword As String, _
ByVal oemail As String, ByVal otype As String, _
ByVal oorg As String, ByVal oocc As String, _
ByVal oloc As String, ByVal oregdate As Date)
Dim sqlCmdNew As SqlCommand = New SqlCommand()
sqlCmdNew.CommandText = sqlStringNew
sqlCmdNew.CommandType = CommandType.StoredProcedure
sqlCmdNew.Connection = sqlConnN
Dim userName As String = Nothing
Dim firstName As String = Nothing
Dim middleName As String = Nothing
Dim lastName As String = Nothing
Dim title As String = Nothing
Dim emailAddress As String = Nothing
Dim passWord As String = Nothing
Dim userType As String = Nothing
Dim org As String = Nothing
Dim occ As String = Nothing
Dim loc As String = Nothing
Dim rdate As Date = Nothing
oLocation = oloc
' user name will be the first part of the email address
emailAddress = oemail
Dim uname() As String = oemail.Split("@")
' extend the length of the user name to at least 5 characters
Select Case uname(0).Length
Case Is > 4
userName = uname(0)
Case Is = 4
userName = uname(0) & "1"
Case Is = 3
userName = uname(0) & "12"
Case Is = 2
userName = uname(0) & "123"
Case Is = 1
userName = uname(0) & "1234"
End Select
' check for suffixes
Dim suffix() As String = oname.Split(",")
Select Case suffix.Length > 1
Case True
title = suffix(1)
End Select
' split names out
Dim names() As String = suffix(0).Split(" ")
' possibly 3 components to the name
Select Case names.Length
Case Is = 1
firstName = names(0)
Case Is = 2
firstName = names(0)
lastName = names(1)
Case Is = 3
firstName = names(0)
middleName = names(1)
lastName = names(2)
End Select
' setup password. must be at least 6 characters.
' if less, extend to 6.
Select Case opassword
Case Is > 5
passWord = opassword
Case Is = 5
passWord = opassword & "1"
Case Is = 4
passWord = opassword & "12"
Case Is = 3
passWord = opassword & "123"
Case Is = 2
passWord = opassword & "1234"
Case Is = 1
passWord = opassword & "12345"
End Select
' user type, organization and occupation
userType = otype
org = oorg
occ = oocc
' registration date
Select Case IsDBNull(oregdate) Or IsNothing(oregdate)
Case True
rdate = Today.Date
Case False
rdate = oregdate
End Select
' try to extract the location
' get the country
Dim country As String = getCountry(oloc)
' get the state
Dim state As String = getState(oloc)
' only thing left is the city
Dim city() As String = oloc.Split(",")
' add parameter values
sqlCmdNew.Parameters.AddWithValue("@NamePrefix", System.DBNull.Value)
sqlCmdNew.Parameters.AddWithValue("@FirstName", replaceSingleQuote(firstName))
Select Case IsNothing(middleName)
Case True
sqlCmdNew.Parameters.AddWithValue("@MiddleName", System.DBNull.Value)
Case False
sqlCmdNew.Parameters.AddWithValue("@MiddleName", replaceSingleQuote(middleName))
End Select
Select Case IsNothing(lastName)
Case True
sqlCmdNew.Parameters.AddWithValue("@LastName", System.DBNull.Value)
Case False
sqlCmdNew.Parameters.AddWithValue("@LastName", replaceSingleQuote(lastName))
End Select
sqlCmdNew.Parameters.AddWithValue("@UserName", replaceSingleQuote(userName))
Select Case IsNothing(title)
Case True
sqlCmdNew.Parameters.AddWithValue("@NameTitle", System.DBNull.Value)
Case False
sqlCmdNew.Parameters.AddWithValue("@NameTitle", title)
End Select
sqlCmdNew.Parameters.AddWithValue("@Password", replaceSingleQuote(passWord))
sqlCmdNew.Parameters.AddWithValue("@EmailAddress", emailAddress)
sqlCmdNew.Parameters.AddWithValue("@PasswordHint", userName)
Select Case isEmpty(org)
Case True
sqlCmdNew.Parameters.AddWithValue("@Organization", System.DBNull.Value)
Case False
sqlCmdNew.Parameters.AddWithValue("@Organization", replaceSingleQuote(org))
End Select
Select Case isEmpty(occ)
Case True
sqlCmdNew.Parameters.AddWithValue("@Occupation", System.DBNull.Value)
Case False
sqlCmdNew.Parameters.AddWithValue("@Occupation", replaceSingleQuote(occ))
End Select
sqlCmdNew.Parameters.AddWithValue("@Address1", System.DBNull.Value)
sqlCmdNew.Parameters.AddWithValue("@Address2", System.DBNull.Value)
Select Case isEmpty(city(0))
Case True
sqlCmdNew.Parameters.AddWithValue("@City", System.DBNull.Value)
Case False
sqlCmdNew.Parameters.AddWithValue("@City", replaceSingleQuote(city(0)))
End Select
sqlCmdNew.Parameters.AddWithValue("@ZipCode", System.DBNull.Value)
sqlCmdNew.Parameters.AddWithValue("@PostalCode", System.DBNull.Value)
Select Case IsNothing(state)
Case True
sqlCmdNew.Parameters.AddWithValue("@State", System.DBNull.Value)
Case False
sqlCmdNew.Parameters.AddWithValue("@State", state)
End Select
sqlCmdNew.Parameters.AddWithValue("@Other", System.DBNull.Value)
Select Case IsNothing(country)
Case True
sqlCmdNew.Parameters.AddWithValue("@Country", System.DBNull.Value)
Case False
sqlCmdNew.Parameters.AddWithValue("@Country", country)
End Select
sqlCmdNew.Parameters.AddWithValue("@GeneralEmail", False)
sqlCmdNew.Parameters.AddWithValue("@FundRaiseEmail", False)
sqlCmdNew.Parameters.AddWithValue("@GeneralUSPSMail", False)
sqlCmdNew.Parameters.AddWithValue("@FundRaiseUSPSMail", False)
sqlCmdNew.Parameters.AddWithValue("@DateAdded", rdate)
sqlCmdNew.Parameters.AddWithValue("@DateUpdated", rdate)
sqlCmdNew.Parameters.AddWithValue("@Active", True)
sqlCmdNew.Parameters.AddWithValue("@UserType", userType)
Dim iRows As Integer = 0
' try to insert the row into the table
Try
sqlConnN.Open()
iRows = sqlCmdNew.ExecuteNonQuery()
If iRows <> 1 Then
errors += 1
mesg += "<br />User: " & firstName & " " & lastName & " was not added.<br />"
End If
newUserCnt += 1
Catch ex As Exception
Dim exMsg As String = ex.Message.ToString()
writeApplicationLog(exMsg, ConfigurationManager.AppSettings("UtilityDBName"))
errors += 1
mesg += "<br />User: " & firstName & " " & lastName & " was not added due to " & exMsg & "<br />"
Finally
sqlConnN.Close()
sqlCmdNew.Dispose()
End Try
End Sub
Function getState(ByVal loc As String) As String
Dim state As String = Nothing
If loc.Contains("NY") Then
state = "NY"
ElseIf loc.Contains("WA") Then
state = "WA"
ElseIf loc.Contains("PA") Then
state = "PA"
ElseIf loc.Contains("AZ") Then
state = "AZ"
ElseIf loc.Contains("MI") Then
state = "MI"
ElseIf loc.Contains("WI") Then
state = "WI"
ElseIf loc.Contains("CT") Then
state = "CT"
ElseIf loc.Contains("NC") Then
state = "NC"
ElseIf loc.Contains("CA") Then
state = "CA"
ElseIf loc.Contains("NY") Then
state = "NJ"
End If
Return state
End Function
Function getCountry(ByVal cntry As String) As String
Dim country As String = "US"
If cntry.Contains("Canada") Then
country = "CA"
End If
Return country
End Function
End Class
Hello,
I have a table that I want to cache. So, if this is my query "SELECT * FROM myTable" that I create the cache from, how can I filter the data?
I really need to cache the whole table, since there are a myriad of different statements being executed against the table, so just caching a specific query won't do.
I've found the best approach to make a question is writing it in code, so how can I do the following:
SELECT ColNames FROM MyTableWhichShouldNowBeCached WHERE whereColumns=someParams.
ColNames and someParams make up for a variation of about to 120 different queries. I use SQL 2005 express edition with advanced services.
Cheers!
/Eskil
Hi Guys!
This SQL statement, though carefully written to delete only selected rows, deletes the entire A_Shift_Times table:
DELETE FROM A_Shift_Times
WHERE EXISTS (
SELECT 1
FROM
Users
WHERE
(A_Shift_Times.time_in >= CONVERT(DATETIME, '2000-05-29 00:00:00', 102)) AND
((Users.User_Password LIKE N'mrr%') OR (Users.User_Password LIKE N'work%')))
What gives? What am I doing wrong here?
Hi everybody,
We are using SQl-2000 Sp2 clustured on two compaq servers
We have to modify our database shema every month.
We are using sp_repladdcolum and sp_repldropcolum to
modify table without snapshot.
Owever I would like to add/delete entire table in shema
database without using snapshot ?
Is it possible ?
How to do ?
Thanks.
Fabio
I convert EBCDIC file to text file at C:orderorder.txt. There are about 1400000 rows. The length of line is 1500.
How to insert entire line into one column of the table? (only one column, named as [LineDetail])
I'm trying to create a query that searches an entire database for keywords inside of the columns for each table within the database. For instance my tables have 2 columns one named ID and the other Permission, I'd like it be able to return all the lines that are associated with that keyword. So if I search "Schedule" it returns all the lines containing that word in it within that database.
View 6 Replies View RelatedI usually go for the largest datafile and then query in-there...But now I need to automate it for several instances... I need to be able with one script quickly retrieve the top 5 largest tables for the entire instance,not by database...
View 3 Replies View RelatedI simply made my script task (or any other task) fail
In my package error handler i have a Exec SQL task - for Stored Proc
SP statement is set in following expression (works fine in design time):
"EXEC [dbo].[us_sp_Insert_STG_FEED_EVENT_LOG] @FEED_ID= " + (DT_WSTR,10) @[User::FEED_ID] + ", @FEED_EVENT_LOG_TYPE_ID = 3, @STARTED_ON = '"+(DT_WSTR,30)@[System::StartTime] +"', @ENDED_ON = NULL, @message = 'Package failed. ErrorCode: "+(DT_WSTR,10)@[System::ErrorCode]+" ErrorMsg: "+@[System::ErrorDescription]+"', @FILES_PROCESSED = '" + @[User::t_ProcessedFiles] + "', @PKG_EXECUTION_ID = '" + @[System::ExecutionInstanceGUID] + "'"
From progress:
Error: The Script returned a failure result.
Task SCR REIL Data failed
OnError - Task SQL Insert Error Msg
Error: A deadlock was detected while trying to lock variable "System::ErrorCode, System::ErrorDescription, System::ExecutionInstanceGUID, System::StartTime, User::FEED_ID, User::t_ProcessedFiles" for read access. A lock could not be acquired after 16 attempts and timed out.
Error: The expression ""EXEC [dbo].[us_sp_Insert_STG_FEED_EVENT_LOG] @FEED_ID= " + (DT_WSTR,10) @[User::FEED_ID] + ", @FEED_EVENT_LOG_TYPE_ID = 3, @STARTED_ON = '"+(DT_WSTR,30)@[System::StartTime] +"', @ENDED_ON = NULL, @message = 'Package failed. ErrorCode: "+(DT_WSTR,10)@[System::ErrorCode]+" ErrorMsg: "+@[System::ErrorDescription]+"', @FILES_PROCESSED = '" + @[User::t_ProcessedFiles] + "', @PKG_EXECUTION_ID = '" + @[System::ExecutionInstanceGUID] + "'"" on property "SqlStatementSource" cannot be evaluated. Modify the expression to be valid.
Warning: The Execution method succeeded, but the number of errors raised (4) reached the maximum allowed (1); resulting in failure. This occurs when the number of errors reaches the number specified in MaximumErrorCount. Change the MaximumErrorCount or fix the errors.
And how did I get 4 errors? - I only set my script task result to failure
Hi,all:
This problem almost drives me crazy, hope I can get some hints from you guyz!!!
Ok, here is the situation:
I wanna only one users 2 modify the data(update) from my page each time, and if at the same time, there are some other users connecting my database through .aspx page, they can only browse the data until the first users finish updating.
It seems I need to implement locking the database, but I am not sure how I am gonna do that using asp.net!!!
Thanx in advance!
hi, i have an application that updates some records in sql tables, and i want to do a web application that updates records in the some database-table(sql) so, my question is how can i lock the row or table so i dont have concurrency problems.tnx in advance.
View 2 Replies View RelatedHello Friends,
I am having a VB application running for the SQL SERVER DB. The VB application is installed on the multiple of PCs in the network. Now when I am trying to fetch the same from all the different PCs simultaneously, its amazingly fast. But the issue comes when I am trying to update the same table (but different rows) from the different PCs simultaneously. The time taken is directly proportaional to the number of users. I am not getting what could be the problem? Can any one suggest me the approch? Is it some related to table / row / page locking? As all the connections are trying to update on the same table. I checked the isolation level. Its default, "READ COMMITTED". Kindly suggest...
Thanks in advance........
Rahul Jha
Hi Gurus,
How can we know that particular table is locked.
Thanks,
ServerTeam
Hai to all,
I want to lock a patricular table during my transaction is this possible, for Example
Create sp() as
BEGIN
Lock Table
Do Some work
Relaese the Lock
END
like this.
Is there any way to lock tables in SQL Server?
View 2 Replies View RelatedHi,If I run an insert statement from the query analyzer and then try toopen the table from enterprise manager then it takes long time to openthe table. But this problem dissapears when i put the statement insideBegin/End Transaction statement.Any idea why this is happening?Thank in advance.Taw.
View 1 Replies View RelatedWhich lock type or isolation level should I use to be sure that no onewill read or write or do anything with the table I'm using?Code block should look something like this:lock tableread value from tablechange value to new_valueupdate table set value = new_valuerelease lockWhile I'm changing the value absolutly no one should be able to readfrom the table.
View 7 Replies View RelatedHow do I do a simple table lock?
Thanks,
MeTitus
Hi Friends
In my server i am getting this error how can i slove this error
could u people any body please help me
error:
Table Lock Wait Time Per Second is 867.3330
milliseconds per second, which exceeds threshold of 10
milliseconds per second."
Thanks
subu
Hi,
How can I see which table is locked up by some particular process?
I know that I can view paricular spid from 'current activity'. But is there any way I can see which table is the center of problem?
I really appreciate your help..
Hi,
I am working on a project which need to produce a sequential certificate number, Everytime I need a new certificate number, I need to find out what is the max number in the database and then the new certificate number just max+1.
But how can I block another
transaction to check what is max certi. number while this transaction is in the middle of writing the new certificate number(max+1) into database . Does ADLockOptimistic work in this case? Here is the code:
My database sql 2000.
cmdTemp.CommandText="Select max(certificateNumber) from product_table where certificateNumber<> 8888888"
set cert_info=Server.CreateObject("ADODB.RecordSet")
cert_info.Open cmdTemp, , AdOpenKeySet, adLockOptimistic
If Not cert_info.EOF then
certnumber=cert_info(0)+1
End if
cert_info.close
set cert_info=nothing
How can i give a table wise exclusive lock in MSSQL Server ?
I got the description but, How can I apply this ?
The sql :
LOCK TABLE <tablename> IN EXCLUSIVE MODE
is not working.
Is there any query/method to do this ?
Please help ...
thanks
About Exclusive locks
--------------------
Exclusive (X) locks are used for data modification operations, such as UPDATE, INSERT, or DELETE.
Other transactions cannot read or modify data locked with an Exclusive (X) lock. If a Shared (S) exists, other transactions cannot acquire an Exclusive (X) lock.
--------------------
I need to update a row but keep a lock on the table (so no one else can update it) while I do run some more code. In Oracle, it always locks whatever you update until you hit commit, but sql server works opposite. How do I tell it not to commit a statement, or how would I explicitly get a lock and then release it later?
View 4 Replies View RelatedI need confirmation from you SQL Server experts out there. Please let me know if the following works. Thanks!
This stored procedure gets a value and increments by 1, but while it does this, I want to lock the table so no other processes can read the same value between the UPDATE and SELECT (of course, this may only happen in a fraction of a second, but I anticipate that we will have thousands of concurrent users). I need to manually increment this column because an identity column is not appropriate in this case.
BEGIN TRANSACTION
UPDATE forum WITH (TABLOCKX)
SET forum_last_used_msg_id = forum_last_used_msg_id + 1
WHERE forum_id = @forum_id
SELECT @new_id = forum_last_used_msg_id
FROM forum
WHERE forum_id = @forum_id
COMMIT TRANSACTION
I have a query like this
SELECT TOP 1 * FROM ITAM_RAMS_STAGING
not getting value...seems like lock associated with that table
how to remove the lock if exists
I have multiple applications which can potentially update the same trigger simultaneously. Each application:
(1) Reads the contents of the current trigger
(2) Creates a new trigger based on the current contents
(3) Drops the trigger
(4) Creates the new trigger
I need to insure that once one application begins step (1), then no other application can start step (1) until step (4) has completed.
Any ideas on how this can be done? Some databases have a concept of locking tables explicitly, so for them, I can do:
(0) lock table foo;
(1) - (4)
(5) unlock table foo;
Is there such a concept in mysql or is there another way of accomplishing this?
Thanks,
Eric