T-SQL (SS2K8) :: Renumbering Remaining Records In A Table After Some Records Deleted
Dec 3, 2014
I have a table with about half a million records, each representing a patient in my county.
Each record has a field (RRank) which basically sorts the patients as to how "unwell" they are according to a previously-applied algorithm. The most unwell patient has an RRank of 1, the next-most unwell has RRank=2 etc.
I have just deleted several hundred records (which relate to patients now deceased) from the table, thereby leaving gaps in the RRank sequence. I want to renumber the remaining recs to get rid of the gaps.
I can see what I want to accomplish by using ROW_NUMBER, thus:
SELECT ROW_NUMBER() Over (ORDER BY RRank) as RecNumber, RRank
FROM RPL
ORDER BY RRank
I see the numbers in the RecNumber column falling behind the RRank as I scan down the results
My question is: How to convert this into an UPDATE statement? I had hoped that I could do something like:
UPDATE RISC_PatientList_TEMP
SET RRank = ROW_NUMBER() Over (ORDER BY RRank);
but the system informs that window functions will only work on SELECT (which UPDATE isn't) or ORDER BY (which I can't legally add).
Is there a way to check who has deleted records from my SQL tables? I asked because I notice records keep disappearing from my tables recently for no reason. The DB is only accessible by a few IT staff. Business users have no direct access to it so they can't do any harm and there is no application that update these record missing tables.
I don't need to know the exact records that have been removed. I need info on who has made a deletion activity on which table, date and time is good enough.
It happened accidently that we deleted records from a table in SQL server 2005 DB. We never took a full backup of the DB till then. Is there any way that we can recover the deleted records. Logs files are still present. ( *mdf and *ldf ).
Can any one tell me ..is there any restriction on the total number of records that can be added to a table ( SQL Server 2005) .Because .. i added 100 records to a table through my program..but i was able to c ..only the last 20 records which is being inserted..can any one tellme any way to increase the total number of records..
pls..help me..solution is required immediately.........
I need to pull records from single table such that I get a subset defined like this:
( acctcode = 'xh364' and product = 'T&E' )
And return all of the rest of the records:
( acctcode = '%' and product = '%' )
Can I do this within a WHERE clause, or will this require CASE / ELSE? There will be other specific acctcode/product rules that will be added later. I could do this with a UNION, but I need to avoid that if possible.
I am having a hard time understanding triggers. My goal is to put a trigger on table x where records are UPDATED or DELETED. When this trigger fires I need to take the record ID and put the ID modified record into table y with the date modified. so basically logging the recordid changed with the getDate()
I don't quite understand how to get the rowid of the modified record.
How to delete records from multiple tables if main table’s entity is deleted as constraints is applied on all..There is this main table called Organization or TblOrganization.and this organization have branches which are in Brach table called tblBranch and this branch have multiple applications let say tblApplication and these application are used by multiple users called tblUsers.What I want is: when I delete the Organization All branches, application and users related to it must be deleted also.How I can apply that on a button click in asp.net web forms..Right now this is my delete function which is very simple
Public void Delete(int? id){ var str=”DELETE FROM tblOrganization WHERE organizationId=”+ id ; } And My tables LOOK LIKE this CREATE TABLE tblOrganization ( OrganizationId int, OrganizationName varchar(255)
I need to query to return a result for each unique machine with the latest date. The example result below would be returned because they have the latest date.
MachineA 5/7/2011 MachineB 5/5/2010
Select Distinct would almost do it, but I need each unique machine that has the latest date.
Now I want the records having flag2=1 only.. I.e ID=3 has flag2=1 where as ID = 1 and 2 has flag1 and flag3 =1 along with flag2=1. I don't want ID=1 and 2.
I can't make ID unique or primary. I tried with case when statements but it I am somehow missing the basic logic.
I have 2 tables in a 1: n relation. How can i get a select statement that the field in the n-relation with outputs, separated by a semicolon; Example: One person have many Job Titles
Table1 (tblPerson) Table2 (tblTitles) 1, "John", "Miller", "Employee; Admin; Consultant" 2, "Joan", "Stevens", "Employee, Software Engineer, Consultant" and so on .... 1 in select statement:
any useful SQL Queries that might be used to identify lists of potential duplicate records in a table?
For example I have Client Database that includes a table dbo.Clients. This table contains various columns which could be used to identify possible duplicate records, such as Surname | Forenames | DateOfBirth | NINumber | PostalCode etc. . The data contained in these columns is not always exactly the same due to differences caused by user data entry; so some records may have missing data from some of the columns and there could be spelling differences too. Like the following examples:
1 | Smith | John Raymond | NULL | NI990946B | SW12 8TQ 2 | Smith | John | 06/03/1967 | NULL | SW12 8TQ 3 | Smith | Jon Raymond | 06/03/1967 | NI 99 09 46 B | SW12 8TQ
The problem is that whilst it is easy for a human being to review these 3 entries and conclude that they are most likely the same Client entered in to the database 3 times; I cannot find a reliable way of identifying them using a SQL Query.
I've considered using some sort of concatenation to a new column, minus white space and then using a "WHERE column_name LIKE pattern" query, but so far I can't get anything to work well enough. Fuzzy Logic maybe?
the results would produce a grid something like this for the example above:
ID | Surname | Forenames | DuplicateID | DupSurname | DupForenames 1 | Smith | John Raymond | 2 | Smith | John 1 | Smith | John Raymond | 3 | Smith | Jon Raymond 9 | Brown | Peter David | 343 | Brown | Pete D next batch of duplicates etc etc . . . .
I have a table that I need to do some computations on all the data but first I need to remove the duplicate records and insert the results into a destination table. Here's the example below. My table has 3.1 million rows. I have tried using the DISTINCT and the GROUP BY but both ways to select the data takes about half a minute to run. I'm wondering if there is a way to increase performance. Users are ok with this time since the process runs overnight but improving it won't hurt. I do have a clustered index on these fields but that doesn't seem to improve any.
I have around 3 tables having around 20 to 30gb of data. My table A related to table B by a FK and same way table B related to table C by FK. I would like to delete all rows satisfying certain condition from table A and all corresponding related records from table B and C. I have created a query to delete the grandchild first, followed by child table and finally parent. I have used inner join in my delete query. As you all know, inner join delete operations, are going to be extremely resource Intensive especially on bigger tables.
What is the best approach to delete all these rows? There are many constraints, triggers on these tables. Also, there might be some FK relations to other tables as well.
Ok, I'm really new at this, but I am looking for a way to automatically insert new records into tables. I have one primary table with a primary key id that is automatically generated on insert and 3 other tables that have foreign keys pointing to the primary key. Is there a way to automatically create new records in the foreign tables that will have the new id? Would this be a job for a trigger, stored procedure? I admit I haven't studied up on those yet--I am learning things as I need them. Thanks.
Table2 contains fields Group, Name,Category, Dimension (Group and Name are not in Table1)
So basically I need to read the records in Table1 using Groupid and each time there is a Groupid then select records from Table2 where Table2.Category in (Select Catergory from Table1) and Table2.Dimension in (Select Dimension from Table1)
In Table1 There might be 10 Groupid records all of which are different.
I am trying to write a query that will retrieve all students of a particular class and also any rows in HomeworkLogLine if they exist (but return null if there is no row). I thought this should be a relatively simple LEFT join but I've tried every possible combination of joins but it's not working.
SELECT Student.StudentSurname + ', ' + Student.StudentForename AS Fullname, HomeworkLogLine.HomeworkLogLineTimestamp, HomeworkLog.HomeworkLogDescription, ROW_NUMBER() OVER (PARTITION BY HomeworkLogLine.HomeworkLogLineStudentID ORDER BY
[Code] ...
It's only returning two rows (the students where they have a row in the HomeworkLogLine table).
I have a situation where deleting old records is blocking updating latest records on highly transactional table and getting timeout errors from application.
In details, I have one table called Tran_table1 in OLTP database. This Tran_table1 is highly transactional table, it will receive data for insert/update continuously
While archiving 2 years old records from Tran_table1 into Tran_table1_archive in batches(using DELETE OUTPUT INTO clause), if there is any UPDATEs on Tran_table1,these updates are getting blocked and result is timeout errors in application.
Is there any SQL Server hints to avoid blocking ..
I am using this code to delete records from a table in the database that has two fields (both are primary keys) I am not getting any error, but nothing gets deleted. Thanks for the help. Code:protected void btnRemove_Click(object sender, EventArgs e) {
I want to know what to do to recover the deleted records on a specific table. Unfortunately, the dba was unable to activate Trace feature and I am not familiar in using the transaction logs to retrieve data.
Does anybody know if SQL 2000 has a tool to roll back (udelete) records? Let's say Payroll dept deletes 500 records by mistake... I know of 2 products that do that (Computer Assoc. - Unicenter Log Analyzer and Red Matrix Techmologies' SQL Audit 1.7 - but I have never used them. Any comments? Thanks for your help.
I'm running a DB using MSDE (2000) that is interfaced by 2 differentades running on PCs with Access 2000 Runtime. One of the ADEs is apackage accounting system that is very solid and stable, the other isa custom application that I wrote (much less solid and stable). Thecustom app only deals with a select few tables in the database, andthe table in question is not one of those.With alarming regularity(daily), records are getting deleted out of aparticular table. I've set up a couple of dummy records in the tableand put a delete trigger on the table that creates record in a 'log'table that tells me the user and the time that the records aredeleted.The deletion (all records in the table) always occurs during businesshours (never over the weekend or at night) and the user responsiblevaries among 3 or 4 different users. 2 of those users don't even haverights to that table, so I'm really confused how those logins couldcause a delete on the table they don't have access to!??!As far as I can tell, this is only happening to this particular table( I hope!).Is there a way that I can get more information on the process ormachine or anything else that is behind the deletion?
I am trying to use SSIS to upsize Visual FoxPro data. The data is in free tables. I'm using the VFP OLE DB provider in a connection pointed at a folder. When I click on preview, I see the right data--deleted records are not included. However, when I run the package, the deleted records are sent to SQL Server 2005. I can pack all the tables prior to executing the package as a work around, but I would think I shouldn't have to. I don't see any way to detect which records are marked for deletion in the data flow. I've tried to specify in the connection string Deleted=Yes, but to no good effect. Also, as I mentioned, when I preview the data, the deleted records are not included, so the connection seems to work properly . Steps to reproduce: In VFP:
CREATE TABLE Test (Field1 N(1))
INSERT INTO Test (Field1) VALUES (1)
INSERT INTO Test (Field1) VALUES (2)
GO TOP IN Test
DELETE
In SQL Server:
CREATE TABLE Test (Field1 Numeric(1))
In Visual Studio SSIS:
Create connection object using VFPOleDB provider pointed to the folder with the Test.DBF.
Create a connection object to SQL Server 2005 pointed to the database with the test table.
Create a DataFlow task with the OLE DB Source and the SQL Server destination. When you preview the Source object you will see just one record, but when you execute the package, you see 2 records transferred and 2 records are actually in SQL Server. Seems like a bug.
