Delete large number of records sql server
WebNov 13, 2024 · Using SqlBulkCopy I can insert a large number of rows in C# into SQL Server which is really very fast. I am in need of a similar thing for delete operations. ... 30K is a small number of rows for sql,i use this to delete milions of rows in huge table. Coluld be some other problem like bad indexing, lock, heap table ecc. Share. WebMar 13, 2013 · So we are going to delete 4,455,360 rows, a little under 10% of the table. Following a similar pattern to the above test, we're …
Delete large number of records sql server
Did you know?
WebMar 30, 2015 · Options to Delete the Data Using TOP Clause Another approach is to use a TOP clause with a DELETE statement to limit the number of rows deleted as shown below. The problem with this approach is that there is no an index on the DueDate which will cause SQL Server to scan the table to find the data. WebAug 17, 2016 · There are no universal method to delete the data effectively. You have to try to use all THREE methods for your table DB design: IN (SELECT ...) EXISTS () INNER JOIN In most cases, for large number of rows, EXISTS and INNER JOIN outperforms IN (SELECT..), and often EXISTS outperforms INNER JOIN Share Improve this answer Follow
WebMar 9, 2010 · The way I am doing this now is to build a giant DELETE statement that looks like this: DELETE from MyRecords WHERE tag = 1 OR tag = 2 OR longTag = 'LongTag1' OR tag = 555 ...where each incoming row has its own 'OR tag = n' or 'OR longTag = 'x'' clause. Then I perform an XML Bulk Load using ISQLXMLBulkLoad to load all the new … WebThis query took 7 minutes and 41 seconds. Sometimes when deleting large amounts of data queries can timeout. As you can see in the examples bellow we have the following times …
WebOn the other hand if you are deleting more than 80-90 Percent of the data, say if you have total of 11 million rows and you want to delete 10 million another way would be to Insert these 1 million rows (records you want to keep) to another staging table. WebMay 27, 2016 · Maybe for SQL Server 2000, but for SQL Server 2008 onwards, it just needs to be DELETE TOP (10000) FROM EligibilityInformation WHERE DateEntered <= DateAdd (day,-31, getdate ()) no self join or sub-query required. Or even, use the @@rowcount "trick" that the Op has already.
WebJan 18, 2006 · The first thing we need to do, however, is setup the table from which we will be deleting a large number of records. Most requests for help in this area come from individuals that are asking...
WebMar 15, 2024 · I am currently working with an application using an Azure hosted SQL server instance. The application data doesn't take up a ton of physical space, however there are a lot of records. There are times … play force arena on computerWebSep 27, 2012 · Is there a better way to DELETE 80 million+ rows from a table? This is my code: WHILE EXISTS (SELECT TOP 1 * FROM large_table) BEGIN WITH LT AS ( SELECT TOP 60000 * FROM large_table ) DELETE FROM LT END This does the job of keeping my transaction logs from becoming too large, but I need to know if there is a … primary sporting developmentWebMay 22, 2015 · Courtesy of @gbn: Bulk Delete on SQL Server 2008. UPDATE. Alternatively, you could try this approach by inserting the records you want to keep in a temp table and then truncate your actual table. Then, transfer back those temp table records into your actual table. play force nowhttp://datamajor.net/how-to-delete-large-number-of-rows-in-sql-server/ primary sports canterbury swimmingWebNov 24, 2015 · If the count of records to delete is much much bigger then records that will remain in the table, i found that simple select into temp table of the records that will … play for at least 6 hoursWebALTER DATABASE DeleteRecord SET RECOVERY SIMPLE; GO BEGIN TRANSACTION -- delete half of the records DELETE dbo.bigTable WHERE Id % 2 = 0; -- rebuild the index because it's fragmented ALTER INDEX ALL ON dbo.bigTable REBUILD; SELECT database_transaction_log_bytes_used FROM sys.dm_tran_database_transactions … playforce vat numberWebMay 25, 2024 · Run a select query to return all the primary key values in the table. Begin a transaction with SQL Server. Send a separate DELETE command for every single row in the table. Ask if you are sure you want … primary sports medicine hss