To do this look at Marc Gravell's answer:įastMember from NuGet: IEnumerable data =. don't forget to take care of connection - I omit this part for clearnessīut if you really need to use SqlBulkCopy you need to convert your objects of class URL to DataTable. string insertQuery = "insert into TUrls(address, name) (URL url in listOfUrls) List, then just loop through all URL from list and insert them to database, e.g. Except if you'll be needed to repeat this operation many times. I want to import data from SQL Server 2008 to Excel 2007 through ASP.Net 4.0 Tool with the help of C#.net coding.Since you need to load just from 10 to 50 urls there's obviously no need to use SqlBulkCopy - it's for thousands of inserts. The biggest thing you will need to worry about is security to make sure each component has the permissions needed to read and import the data. NET, but you can take the same exact concepts in this tip and use the SQL commands to import the data. I have not tried it in Azure, but it should work the same way.ĭoes this also apply to Azure SQL Database? I know we don't have the ability to change the recovery model from FULL there, yet we're throttled on log writes.īack To Top - I am sure there are several other ways to do this via. It appears that the conditions required for "efficient logging" in full recovery is similar to the conditions required for minimal logging in simple/bulk logged recovery. What you're seeing in some scenarios in the full recovery model is "efficient logging", which is the logging of the contents of a page (as opposed to row-by-row logging). ![]() For INSERT INTO You use the TABLOCK hint as shown below with the INSERT INTO command. Minimal logging refers to the logging of page allocations metadata. In order to allow minimally logging bulk inserts, you need to use the table lock hint as shown below for the various commands. One thing that is technically inaccurate: there is no possiblity of "minimal logging" in full recovery model. I think this is the best documentation to date, and something that should be on MSDN. Copying data by using the SQL Server import and export wizard In the Choose a data source step, connect to a source database. If you want to look at the transaction log entries, you can use these queriesįirst of all, great thorough article documenting all the different scenarios/conditions needed to achieve minimal logging. Note: the count of the log rows for the second insert includes the log rows fromīoth the first and second insert. To test where the tableĪlready has data, I just reran the insert again and checked the number log entries. These are the results I got from the above tests. WHERE AllocUnitName LIKE 'dbo.testTable%' get count of rows in transaction log for this object SELECT TOP 100000 a.id, a.id, a.name FROM sys.sysobjects a CROSS JOIN sys.sysobjects b CROSS JOIN sys.sysobjects c insert 100K rows of random data from system tables You use the TABLOCK hint as shown below with the INSERT INTO command.ĬREATE TABLE dbo.testTable (id int, id2 int, content varchar(200) )ĬREATE CLUSTERED INDEX ON. Hint as shown below for the various commands. In order to allow minimally logging bulk inserts, you need to use the table lock Note: the items that are highlighted are the differences between the recovery If the database is in the FULL recovery model, these are how things are logged. WITH (TABLOCK) the data pages wereįully logged, but for BCP and BULK INSERT they were not. NOTE: When doing a test using INSERT INTO. If the database is in the SIMPLE or BULK_LOGGED recovery model, these are how Databases in Simple and Bulk-Logged Recovery ![]() The Bulk insert also has the advantage of loading the data BATCHSIZE wise. Bulk insert allows us to import the CSV file and insert all the data from the file. But if you want to multiple rows into the database table, then we use the SQL bulk insert. The following chart shows you when and how things will be logged in the transaction Normal insert statements will only insert one row at a time into the database. Before copying, I have created an empty table with the same structure (equivalent data types) like. There are two operations that get logged, data page updates and index page updates. I need to copy a large SAP table (28 columns with mostly nvarchar, 100 mio records) from a SQL Server into a PostgreSQL database as fast as possible every day (delta update is not possible) using Python. log was filled before the bulk copy is complete.
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