using below query
DELETE FROM Table_name
WHERE Date_column < GETDATE() - 30
am able to delete old records morethan 30 days, but i want to results to be saved in file.
before deleting i want to a craete a file and save the to be deleted records.
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.
Im trying to delete duplicate records from the output of the query below, if they also meet certain conditions ie 'different address type' then I would merge the records. From the following query how do I go about achieving one and/or the other from either the output, or as an extension of the query itself?
SELECT
a1z103acno AccountNumber
, a1z103frnm FirstName
, a1z103lanm LastName
, a1z103ornm OrgName
, a3z103adr1 AddressLine1
, A3z103city City
, A3z103st State
[code]...
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).
Assuming I have a table similar to the following:
Auto_ID Account_ID Account_Name Account_Contact Priority
1 3453463 Tire Co Doug 1
2 4363763 Computers Inc Sam 1
3 7857433 Safety First Heather 1
4 2326743 Car Dept Clark 1
5 2342567 Sales Force Amy 1
6 4363763 Computers Inc Jamie 2
7 2326743 Car Dept Jenn 2
I'm trying to delete all duplicate Account_IDs, but only for the highest priority (in this case it would be the lowest number).
I know the following would delete duplicate Account_IDs:
DELETE FROM staging_account
WHERE auto_id NOT IN
(SELECT MAX(auto_id)
FROM staging_account
GROUP BY account_id)
The problem is this doesn't take into account the priority; in the above example I would want to keep auto_ids 2 and 4 because they have a higher priority (1) than auto_ids 6 and 7 (priority 2).
How can I take priority into account and still remove duplicates in this scenario?
This seems simple enough but for some reason, my brain isn't working.
I have a lookup table:
Table A: basically dates every 30 days
1/1/2014
2/3/2014
3/3/2014
4/3/2014
I have Table b that has records and dates created assocated with each record
I want all records that fall between the 1st 30 days to have an additional column that indicates 30
union
records with additional column indicating 60 days that fall between the 30 and 60 day
union
records with additional column indicating 90days that fall between the 60 and 90 day mark.
Is there an easy way to do this?
I need to delete records from a table (Table1) which has a foreign key column in a related table (Table2).
Table1 columns are: table1Id; Name. Table2 columns include Table2.table1Id which is the foreign key to Table1.
What is the syntax to delete records from Table1 using Table1.Name='some name' and remove any records in Table2 that have Table2.table1Id equal to Table1.table1Id?
how to track how many rows updated or deleted per day in a single table and load the information in another table .
View 7 Replies View RelatedI need to delete all records in the TBL_PCL_LENS_DATA table that do not have a corresponding record in the TBL_VERIFICATION table.
Primary Table: TBL_PCL_LENS_DATA
PK: Serial Number
PK: ProcessedDateTime
Child Table: TBL_VERIFICATION
PK: Serial Number
Thanks,
Sean
I have a table that has multiple records as illustrated in the simple list below. The real list is much longer.
MachineA 1/1/2008
MachineA 1/3/2008
MachineB 1/7/2008
MachineB 1/8/2009
MachineB 5/5/2010
MachineA 5/7/2011
MachineA 4/2/2013
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.
Suppose I have 2 table
1)Main
2)History
Main table maintain all the records having columns MAIN_SKU,DEDUCTIBLE_AMT,model_id,catagory,ModifiedDate
IF DEDUCTIBLE_AMT is changes it will place entry in history table ,columns are same with history_id
i want to display distinct main_sku from history table(all columns) with last DEDUCTIBLE_AMT changed from history table
table structure
main table
MAIN_SKUDEDUCTIBLE_amtmodel_idcatagory
1100100phone
2150101phone
3200109smartphone
4100202smartphone
History table
History_idMAIN_SKUDEDUCTIBLE_amtmodel_idcatagoryModifiedDate
11150100phone4/14/2014
21200101phone4/13/2014
34109202smartphone4/14/2014
44101202smartphone4/13/2014
52200101phone4/13/2014
63100109smartphone4/12/2014
I have a table called TBLCataloghi
I have multiple records with colunms codpro and codcat equal
They differ only by a date called catalog.datfin
I'd like to select all rows but with the same codpro,codcat, obtaining ONLY the row with MIN () field datfin
Field datfin is a date..
Ex. codpro = 'PIPPO'
codcat = 'MK'
DATFIN = 01/01/2010
codpro = 'PIPPO'
codcat = 'MK'
DATFIN = 10/07/2014
I'd like to read both records but in SELECT obtain only the record with datfin MIN (01-10-2010)
I did the query but i was not able to do nothing of good. I obtain all times both records...
SELECT catalog.codpro AS CodProdotto,
catalog.codcat AS CodiceCatalogo,
MIN(catalog.datfin)
FROM pub.catalog
WHERE catalog.codcat = 'MK'
GROUP BY catalog.codpro,catalog.codcat ,catalog.datfin
:confused: Urgent!!
Hi there. I use MS SQL server. I would like to separate the data from one table to two tables refer to two reference tables and the following conditions:
Let say these two reference tables are called:
Table A & Table B
Group A:
1. Same date in Table A & Table B
2. Same ID in Table A & Table B (ID is not unique)
3. Same name in Table A & Table B (Name is not unique)
Combine all of these three conditions for unique identifier.
I used the following SQL code to separate the required data that match the above conditions to the new table.
(Code)
select a.Project, a.Site, a.S_number, a.Field_ID, a.Method, a.Analyte, a.Result, a.Units,
a.Qualifier, a.Dilution_Factor, a.Reporting_limit, a.Recovery_, a.Matrix, a.CAS_Number, a.Sample_Date,
a.Received_Date, a.Prep_Date, a.Analysis_Date, a.Batch_ID, a.Data_Package_num_SDG, a.Lab_Sample_ID,
a.Lab into APPL_union_exist from APPL_union_update a, Before_01012004_report b
where a.Field_ID = b.[Field Sample] and a.Sample_Date = b.Collected and a.Analyte = b.Analyte
However, I don't know how to delete the data that copied to the new table in original table, or separate that to the new table. Wish someone can help me. Thanks a lot
I need to export the records of a table in xml format.
create table ##prova
( Valuta varchar(2),
Misura float
)
insert into ##prova values ('EU',1000)
insert into ##prova values ('$',2000)
The final result must be something like this:
<root>
<obs id=”0”>
<dim name=”Valuta” value=”EU” />
<dim name=”Misura” value=”1000” />
</obs>
<obs id=”0”>
<dim name=”Valuta” value=”$” />
<dim name=”Misura” value=”2000” />
</obs>
</root>
I have a scenario where ID has three flags.
For example
ID flag1 flag2 flag3
1 0 1 0
2 1 0 0
1 1 0 0
1 0 0 1
2 0 1 0
3 0 1 0
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.
Hello All,
Please show me how to delete duplicate records from a table.
Thanks in Advance
hi,
i have a table in which 100 rows are there . i have duplicate rows. so ho can i remove it . suggest me a command
One can never consent to creep,when one feels an impulse to soar
RAMMOHAN
I uploaded some data about 2 or 3 times and it keep appending it to thetable.Now I want to keep only first duplicate and delete rest of.Suppose part number 123 has been added 3 times so I want to keep only 1record.Thanks
View 1 Replies View RelatedHello Frnds....Can anybody give the answer of this question as How to Delete duplicate records from Table ?
I Know that with check option and also with Unique Constraint we can avoid to enter duplicate records in table but How to delete from table which does not have any constraints ?
Hello, I'm developing application which monitors network packets. The monitoring data are saved into table. Monitoring table maintains the data for fixed quantum time,for example during one 1 hour. So, every minute before or after insert new data, I delete the time-expired data. I doubt that the endless delete operation would results in some problems(increasing index,etc..).
Is this mechanism safe to the dbms?
Aren't there round-robin(?) style table?
Short Question: How do I delete all records from a destination table prior to appending new data to that table?
I am working with a SQL database that was migrated from MS Access. All relationships, primary keys, and identity columns have been set identically to the MS Access database values. The MS Access database is still being used as the database of record until the SQL database is fully functional with front-end, etc.
I want to delete the information stored in all the SQL tables, and then append the MS Access values to the SQL tables. I was able to write delete and append queries in MS Access to correctly transfer data to the SQL tables. However, I would prefer doing this through SSIS because I have several other sources of data to move to a SQL Server database and most of those other sources are not a MS Access database.
Due to relational entegrity settings, I need to delete the records from 8 tables in a specific order. I have tried independent control objects for each of the 8 tables with data flow objects of either "OLE DB Command" or "OLE DB Source" with the SQL command as "Delete From TableName". Results of the debug indicate everything is "green" but no records were deleted fromt the tables.
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 . . . .
Hello,
I have been serching for weeks to resolve this problem. I am new to ASP.NET and trying to make the migration from ASP which I have programmed in for years. I am using Microsoft Visual Web Developer 2005 Express Edition and SQL Express Edtion. I have been working through the Microsoft Video Training at http://msdn.microsoft.com/vstudio/express/beginner/learningpath/ and created a web site using Tier 3 Lesson 8 as the model. My new web site which is a simple phone book applicaiton lets me read the table and select the record without any problem. But the update form lets me edit but when I attempt to Apply the update I get the following error.
Server Error in '/Phonebook' Application.
ObjectDataSource 'ObjectDataSource1' could not find a non-generic method 'Update' that has parameters: FirstName, LastName, PhoneNumber, BossGroup, Department, BossPickup, ShowInPhonebook, Type, Original_FirstName, Original_LastName, Original_PhoneNumber, Original_BossGroup, Original_Department, Original_BossPickup, Original_ShowInPhoneBook, Original_Type, Original_ItemID.
Description: An unhundled expception occured during the execution of the current web request. Please review the stack trace for more information about the error and where it originiated in the code.
The Stack Trace basiclly showes the same error as above.
Also, when I attempt to delete the record I do not get an error but the record does not delete.
What is interesting is that I can add a record so I do not believe that it is a security permissions issue. I have the ISS Authinication Method Enable Anonymous Access set on with full control.
If anyone has any insight as to why this is occuring please let me know.
Hi ,
I have a scheduled job which does an text file import in my database . The data gets appended in my table every day from this import job .
Since my table is growing every day , i want to truncate the table after the data has been collected for three months i.e 90 days . The table will be empty and the new data will flow in through the import .
Any thoughts how to do it through query and schedule it ???
Thanks
Hi everyone,
I have a task to create a dts package, which will delete records in a SQL table, which are present on a sheet tab in Excel. I know how to transfer records from Excel to SQL table and vice versa, but not sure how I can delete the records in SQL table, which are present in Excel. Note that there are just 2 columns - one is a key and the other name.
Thank you all in advance,
Saurav
So I've stumbled across an audit table on one of our systems that has reached a hearty 180M rows in size.
The table is a heap (no indexes whatsoever).
Each record has a datetime value indicating when it was created.
I need to delete everything that was created prior to the last 6 months; what is my best plan of attack?
DELETE FROM [SCS_NAV2009R2_PROD].[dbo].[Payroll Ledger Entry]
gives this error
Msg 9002, Level 17, State 4, Line 1
The transaction log for database 'SCS_NAV2009R2_PROD' is full. To find out why space in the log cannot be reused, see the log_reuse_wait_desc column in sys.databases
~ 7,000,000 records
now i have set the log to autogrow and set the max size to 2tb
what else can i do to get this going?
Hi, I would like to delete some records in a table older than a specified date using a stored procedure. Can anyone help?
Thank you,
Cynthia
Hi Everyone,
We have a large test database with million of records for more than company site Code. Sometime we want to refresh the data of that database for one or more site Codes.
In order to do that I have to delete all records of the site code we want to refresh on the test database first then copy a new set of data from production database over. Since we refresh data based on the site code therefore I have to use the Delete command instead of Truncate.
Since this is a huge database with thousand of tables and million of records per table I have a performance issues with delete command. So what would be the best to delete a large number of records without writing any information to database log file?
FYI: The Recovery model of this database is Simple
Regards,
Jdang
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.
SELECTDateYear ,
DateMonth ,
Nbr ,
Nbr1 ,
Nbr2 ,
Datafield1 ,
Datafield2,
[code].....
Is there a way that I can reset the key field to 1 when using DELETE to clear a table?
(Note: if there is a separate command that I could use after the DELETE, that is fine too.)
Thank you for your help with this,
-DJ
I am using a SQL Server Agent jobs that run each morning to update the records in a table to match what they should be for that day. I built them and tested it using a test table called "testtable1". It worked fine. But when I switched over to our production table, it fails saying the table has to be decaled. What would be the difference. The production table has a "@" in front of the name, is that causing issues?
USE [Live_build]
GO
SET ANSI_NULLS ON
GO
SET QUOTED_IDENTIFIER ON
GO
BEGIN
DELETE
FROM @ZIPLIST
INSERT INTO @ZIPLIST
SELECT * FROM tblZip3DSWed;
END