Making The Value Of One Coloumn The Same For A Large Set Of Data In A Table?
Nov 19, 2007
Hello, Im a very new to SQL server etc, so please bear with me.
I am currently trying to find a quick way of making a large number of database entries within a particular table all have the same value in one particular column.
I have created a query in MS SQL Server Management Studio, which outputs all the entries in a particular table that I want to change. Currently they all have different values in a certain column in this table, and I want them all to have the same value in that column.
we need to decide an architecture for Performance on a web site Search! I wanna use text service of SQL 2005 .But I am worried about the performance .... How should I design the system if I want the best perfomance and scalability ?1.Should I build a seperate coloumn in my every table and merge all the information into one coloumn and full text index that column.2.Put a full text index in all column in the table and use OR clause and reverse rank it for AND clause,using CONTAINSTABLE function.3.Make a different table and put _ID,_TYPE and _VALUE fields and search in that table with less coloumns.4.Seperate the full text database and search in a seperate db so that I can scale better?did anybody have a similiar problem ? Any books on full text search ?
I have been in contact with my Hosting provider who have told me that my website seems to be making a large amount of SQL commands, and locking the tables.
I have a table that is fairly large, and I need to make a change to one of the columns in the table. Namely I need to change the datatype and rename that column. When I try to save the updated table, I keep getting a timeout error that says.
'eligibility (dbo)' table - Unable to create index 'PK_eligibility'. Timeout expired. The timeout period elapsed prior to completion of the operation or the server is not responding.
Any ideas on how to make the table change more efficient or change the timeout period. I need to keep the existing data in the table. I am using sql server managment studio(2005) connected to a sql server 2000 database.
Currently we has a database of size about 300G. Because our backup system failed some time past we were left with a transaction log file which grew to about 160G. However our backups are working again and everything is working fine. My understanding is that now the transaction log file is practically empty but the capacity remains at 160G.
When you delete records the deleted transactions are going to get logged to the transaction file. My understanding is when a backup is done these transactions get discarded out of the transaction file.
could I make use of this relatively large transaction file and start deleting transactions without out actually adding to the transaction file size.
The plan is to delete records from logging tables that are not referenced to by any other table without this increasing the transaction log file.For example over a period of a few weeks we can delete a chunk of records from a table. Then after it has completed a backup we can delete another chunk of records out of this table until we have got the table down to the records that we now need.Will this work?
I am studying indexes and keys. I have a table that has a fixed width of data to be loaded in the first column which is parsed in a view based on data types within the fixed width specifications.
Example column A: (name phone house cost of house,zipcodecountystatecountry) -a view will later split this large varchar string based column b: is the source filename of the data load (varchar 256) ....
a. would there be a benefit of adding a clustered or nonclustered index (if so which/point in direction on why)
b. is there benefit of making one of these two columns a primary key (millions of records) or for adding a 3rd new column as a pk?
c. view: this parses the data in column a so it ends up looking more like "name phone house cost of house zipcode county state country" each having their own column.
-any pros/cons of adding indexes (if so which) to the view instead of the tables or both for once the data is parsed?
The purchased-application mssql 6.5, sp 4 that I am working on has one large table has 13m illion. It the largest table considering thenextlatgest table is only1.75 million rows.
Thew vnedor has made a change to this largest table in recommending changing a data type -- char to varchar. To make this change easier to do, I want to "archive" older data not necessary for the current year or current processing to another table.
What is the best way to do this archiving?
Any information you can provide will be greatly appreciated. Thanks.
I need to delete data from a particular table which has more than half a million records. The data needs to be deleted is more than 200,000 records from the table. What is the best way to delete the data from the table other than importing into a temporary table and performing the same operation?
Let me know if the strategy to be followed is okay.
1. Drop all the triggers 2. Drop all the indexes 3. Write a procedure with a loop setting ROWCOUNT to 1000 and delete the records. ( since if I try to delete all the rows it will give timeout error ) The above procedure will delete 1000 records for each batch inside the loop till it wipes out all the data for the specified condition. 4. Recreate Indexes and Triggers.
Please let me know if there are any other optimal solution.
We have a large table which is very old and not much ppl take care about, recently there is a performance problem from the report need to query to this table. Eventally we find that this table have primary key missing and there is duplicate data which make "alter table add primary key" don't work
Besides the data size of this table require unacceptable time to execute something like "insert into new_table_with_pk from select distinct * from old table"
Do you have any recommendation of fixing this? As the application run on oracle , sybase and sql server, is that cross database approace will work?
I need to update a large table, about 55 million rows, without filling the transaction log, in the shortest time as possible. The goal is to alter the table and change the data type for Text column from VARCHAR(7900) to NVARCHAR(MAX).
Since I cannot do it with an ALTER TABLE statement (it would fill up the transaction log) I'm thinking to:
- rename column Text in Text_OLD - add Text column of type NVARCHAR(MAX) - copy values in batches from Text_OLD to Text
The table is defined like:
create table DATATEXT( rID INTEGER NOT NULL, sID INTEGER NOT NULL, pID INTEGER NOT NULL, cID INTEGER NOT NULL, err TINYINT NOT NULL,
[Code] ....
I've thought about a stored procedure doing this but how to copy values in batch from Text_OLD to Text.
The code I would start with (doing just this part) is the following, but maybe there are more efficient ways to do it, or at least there's a better way to select @startSeq in the WHILE loop (avoiding to select a bunch of 100000 sequences and later selecting the max).
declare @startSeq timestamp declare @lastSeq timestamp select @lastSeq = MAX(sequence) from [DATATEXT] where [Text] is null select @startSeq = MIN(Sequence) FROM [DATATEXT] where [Text]is null BEGIN TRANSACTION T1 WHILE @startSeq < @lastSeq
I'm trying to move my current use of an sql 2000 db to sql 2005.
I need to update a table definition (to change a field to an Identity)
I'm getting a dialog box (in SQL server management studio) on save saying :
'xxxx' table
- Saving Definition Changes to tables with large amounts of data could take a considerable amount of time. While changes are being saved, table data will not be accessible.
I press 'Yes' to the dialog box.
After 35 seconds, I get another dialog box saying:
'xxxx' table
- Unable to modify table.
Timeout expired. The timeout period elapsed prior to completion of the operation or the server is not responding.
Well, the server is responding and I can query that talbe and other, I can add/delete rows to other columns. I can modify other (smaller) tables.
I have a combo box where users select the customer name and can eithergo to the customer's info or open a list of the customer's orders.The RowSource for the combo box was a simple pass-through query:SELECT DISTINCT [Customer ID], [Company Name], [contact name],City,Region FROM Customers ORDER BY Customers.[Company Name];This was working fine until a couple of weeks ago. Now wheneversomeone has the form open, this statement locks the entire Customerstable.I thought a pass-through query was read-only, so how does this do atable lock?I changed the code to an unbound rowsource that asks for input of thefirst few characters first, then uses this SQL statement as therowsource:SELECT [Customer ID], [Company Name], [contact name],City, Region Fromdbo_Customers WHERE [Company Name] like '" & txtInput & "*' ORDER BY[Company Name];This helps, but if someone types only one letter, it could still bepulling a few thousand records and cause a table lock.What is the best way to populate a large combo box? I have too muchdata for the ADODB recordset to use the .AddItem methodI was trying to figure out how to use an ADODB connection, so that Ican make it read-only to eliminate the locking, but I'm striking outon my own.Any ideas would be appreciated.Roy(Using Access 2003 MDB with SQL Server 2000 back end)
I want to make data changes in read_only database , that's why i must set database read_write. While database is at read_write mode, i want to be sure that no one makes change in database.
For this aim, i write the code below, but i suspect that after setting the database read_write, till the setting database single_user ,is it possible get DML script from another user. Is the code below enough for this operation. Or is there another way?
Reminding: Read_only database can not be set single_user mode. That's why, first you must set database read_write.
The code;
use master alter database xxx set read_write with rollback immediate alter database xxx set single_user with rollback immediate
use xxx update tablexxx set columnxxx=yyy use master alter database xxx set read_only with rollback immediate alter database xxx set multi_user with rollback immediate
I have a lot of News. Only i want to get last 10 news and piorty is important for me to change orders of the news. So i add a new coloumn in the table (Piorty int) ...
select top 10 NewsID, Piorty, Title, Spot from News order by 1 desc, 2 asc --
i want to get last 10 news than order by piorty (which piorty is bigger is be thre first) but in this query i just get last 10 news desc the piorty isn't imports even though i would get them order by piorty but last 10 news...
How can i do that ??? Please hellppp ... thnank you verry muchhh ...
I have a scenarios where if I execute select * from tbl it should display the all the records without waiting to release any lock. For example suppose I have one table called tbl and one session is updating one records and not committed yet and in other session if i execute select * from table I can see all the records, for that records it can show me older version. but my select statement should not wait to commit another session and also it should not show the modified data.
I have two tables. One table (Table 1) has a column containing commadelaminated email addresses. The other table (Table 2) has a columnwith just one email address in it. I need to perform a query thatjoins the comma delaminated table (Table 1) to Table 2, when the singleemail address in Table 2, is contained in the list of email addressesin (Table 1).I hope this isn't too cryptic, and I know comma delaminated lists arebad, but I can't do anything about that.I need a select statement that can perform this task. Anyone have anysuggestions?
hi. i'm trying to make a report in asp that sums up a whole bunch of statistics. the report is quite lengthy and takes about 2 minutes to load. i thought i would solve that problem by making a table to dump the statistics into instead of calculating the statistics every time the report is viewed. this way, the page would just read the table with the statistics already put in it. these statistics would be updated every day or two so i don't need anything up to the minute.however, i have run into a small problem which is actually updating the information in the table. my new table is called OfficeReport and it looks like this:UserID Stat1 Stat2 Stat3 ...... Stat3223 0 0 0 056 0 0 0 072 0 0 0 0this is a query for one of the statistics i am currently using:SELECT DefendantCase.UserID, COUNT(DefendantCase.UserID) AS CountOfUserID FROM DefendantCase LEFT JOIN UserDescription ON DefendantCase.UserID=UserDescription.UserID WHERE UserDescription.Status=1 AND UserDescription.UserType=1GROUP BY DefendantCase.UserIDif i run this query, this is what i get:UserID CountOfUserID54 2160 1052 294 427 22how can i modify this query so its output updates the same UserID column in the OfficeReport table? Thanks!
I need to make a backup of a table so that if I mess it up I can put the data back to where I started...
I am going to insert some new rows and update values in some existing rows. So before I do this and find out I messed it up...how do I make a copy of Table A as Table B?
I would actually like to make a copy to table B, then run my changes into B, make sure all is correct, and then transfer the revised data from B over to table A replacing its data. What approach would be best here to accomplish this?
hi friends i am new to this forum and to the tech. also , i am reading a csv file and storing the data to the table of sql server 2005 database but the problem is i cannot join both the tables because both the tables doesnot have common cols and ther is no primary key field in any of the coloumn i have tried the sql query but i didn't got the desired output so could anyone help me please see the sql query of mine is like this:
SELECT dbo.table1.country, dbo.table1.code, dbo.table1.rate_min, dbo.table2.start_date_time, dbo.table2.rounded_dur, dbo.table2.cost, dbo.table2.dialed_digits FROM dbo.table1 INNER JOIN dbo.table2 ON dbo.table1.code = SUBSTRING(dbo.table2.dialed_digits, 1, 2) OR dbo.table1.code = SUBSTRING(dbo.table2.dialed_digits, 1, 3) OR dbo.table1.code = SUBSTRING(dbo.table2.dialed_digits, 1, 4) OR dbo.table1.code = SUBSTRING(dbo.table2.dialed_digits, 1, 5) OR dbo.table1.code = SUBSTRING(dbo.table2.dialed_digits, 1, 6)
Requirement: I wanted to create another table based on the column values. For eg: I have to take the employee id and check for what value he has under owns column in the table. I take only 3 values and then these values should go to the newly created columns (owns1, owns2,owns3). if there is no value for any of these columns it should have null values loaded in them. The result of the modification should look like this:->
Note: eventhough employeeid 3 owns more than 3 things we only take 3 of what he owns and populate to above coloumns. In addition to it, the column OWNS will have more than 500 different values in them.
Its kind of urgent and if anyone knows how to , Can you please help me on this. Thanks a lot. -- Ragulan ;)
I have a huge question, it's for my job im doing now. I have a table with the name TWO.dbo.SVC06105. I want to be able to take the word "TWO" and put that into a variable. I know this doesn't look correct, but I want to be able to do something like this:
DECLARE @GPNAME CHAR(100) SET @GPNAME = 'TWO'
SELECT * FROM @GPNAME.dbo.SVC06105
I know the SELECT statement isn't correct, but I hope that you guys understand what i'm trying to do through this example. BTW, I am new to this team so nice to meet you all. L8er
I have one table 'tbUser' having coloumnsUserID,UserName,Category UserID UserName Category 1 Shailaja H 2 Anagha H 3 Raju L 4 Kiran L I want output as UserID UserName HigherCategory LowerCategory 1 Shailaja H 2 Anagha H 3 Raju L 4 Kiran L
I am struck at one point. I am trying to this operation and not able to go further.
1. I have got the dataset to a variable in the control flow.
2. I am looping through the dataset based on a coloumn.
3. Now inside my For each loop i have a dataflow task.
4. In the data flow task i am trying to build a dynamic query using the OLEDB Source and i have selected SQL Command from variable. And the variable build the Query as select * from @othervariable.
Now my question is
Can i send the data of each of the Query resultset to an out put text file using Flat File Connection? If yes pls guide me how? I have tried to create a flat file connection but i am failing how to map the data comming from step 4 dynamically for every query, since every query gives you a different resultset with different coloumns.
We have a legacy database whose data needs to be included in our yet-to-be-built sql 2005 data warehouse. Some of the tables don€™t have any natural candidates for a primary key. (Of course, we also need to add other data to the mix.)
Suppose we load the empty warehouse initially. In following loads we don€™t want to include those records that haven€™t changed from the first load (€œduplicates€?) but we also don€™t want to delete the contents of the entire warehouse because of the load time. Any ideas/best practices how to handle €œincremental updates€? to a warehouse would be appreciated.
I was wondering if anyone has ever written a chart with multiple datasets.
I need to be able to show sales dollars inflow by order date on one line and on the other needs to be sales dollars delivered by delivery date. So the all sections Values, Category groups, and Series Groups in the chart will be from 2 different datasets.
I have tried but it will not allow aggreates in the series groups.
I've seem some good posts similair to this, but I haven't been able to find my exact issue.
I have the following table:
ID Name Location Start End
1 Joe NY 2000 2001
1 Joe CA 2002 2004
1 Joe MA 2005 2008
2 Sue NJ 2003 2004
2 Sue FL 2004 2008
3 Bob CA 1999 2000
3 Bob WA 2001 2004
3 Bob OR 2005 2006
3 Bob MI 2007 2008
As you can see, the Location, Start and End dates can vary for each person and I don't know how many rows a single person might have.
The result I want, is a "pivot like" table.
ID Name Location1 Start1 End1 Location2 Start2 End2 Location3 Start3 End3 Location4 Start4 End4
1 Joe NY 2000 2001 CA 2002 2004 MA 2005 2008
2 Sue NJ 2003 2004 FL 2004 2008
3 Bob CA 1999 2000 WA 2001 2004 OR 2005 2006 MI 2007 2008
I assume I can first do a count of the maximum rows for an individual and that is greatest number of columns I would need. But doing that and trying to figure out the rest has really stumped me.
Any thoughts, ideas and suggestions would be greatly appreciated.
I have a pivot table query I am running and wanted to find out if there was a way to pull in the dates like getdate() - 12 months, getdate() - 11 months, etc. instead of hard coding the dates.
Here is my query
SELECT Client, [4/1/2007 12:00:00 AM] AS Month1, [5/1/2007 12:00:00 AM] AS Month2, [6/1/2007 12:00:00 AM] AS Month3, [7/1/2007 12:00:00 AM] AS Month4, [8/1/2007 12:00:00 AM] AS Month5, [9/1/2007 12:00:00 AM] AS Month6, [10/1/2007 12:00:00 AM] AS Month7, [11/1/2007 12:00:00 AM] AS Month8, [12/1/2007 12:00:00 AM] AS Month9, [1/1/2008 12:00:00 AM] AS Month10, [2/1/2008 12:00:00 AM] AS Month11, [3/1/2008 12:00:00 AM] AS Month12, [4/1/2008 12:00:00 AM] AS Month13, Engineer FROM (SELECT Client, DollarsBilled, SlipDates, Engineer FROM dbo.MonthlyClientBillables) p PIVOT (SUM(DollarsBilled) FOR SlipDates IN ([4/1/2007 12:00:00 AM], [5/1/2007 12:00:00 AM], [6/1/2007 12:00:00 AM], [7/1/2007 12:00:00 AM], [8/1/2007 12:00:00 AM], [9/1/2007 12:00:00 AM], [10/1/2007 12:00:00 AM], [11/1/2007 12:00:00 AM], [12/1/2007 12:00:00 AM], [1/1/2008 12:00:00 AM], [2/1/2008 12:00:00 AM], [3/1/2008 12:00:00 AM], [4/1/2008 12:00:00 AM])) AS pvt
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I'm having a real hard time coming up with a solution to this problem. I created a custom gridview control from Dino Esposito's "Extending Gridview" article which autogenerates a checkbox column that allows for multiple record selection. Once a user checks a box, the entire row gets selected. I added a dropdown list on the top of the page that has only two options, "Yes" or "No". What I'm trying to do is update a boolean column called "contract" (I'm using the Pubs sample database) for all selected rows (via checkboxes checked) depending on whether the user selects "Yes" or "No" from the drop down menu. For example,1) the user selects "No" in the dropdown2) The user checks all rows in the checkbox column for which he wants the all the values"contract" field set to "No"3) The user then clicks on a button called "Submit" and all selected records get updated to "No" under the "contracts" column. The idea is to allow the user to change the boolean values from a field for multiple records. Hence, making individual cells editable is pointless. Anybody have an idea how to go about this?
