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How do I DELETE a large data table in SQL without logging?
Another option would be using a tablevariable which are not logged. Hence store your readTime >= dateadd(MONTH,-7,GETDATE()) data in a table variable and then truncate the original table and copy back the data from the table variable.
How do I DELETE a row from a large table in SQL?
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.
- Using ROWCOUNT property.
- Using a Cursor.
- Using a While Loop.
- Using GO with a count.
- Generating the DELETE Statements.
- Executing the File using SQLCMD.
What happens when I delete a large number of rows?
Sometimes, when you try to delete a large number of rows from a table the transaction file may grow to the point that you will run out of disk space. In other occasions, when the transaction log growth is limited, the delete can fail with the following message:
How to delete large data of table without log?
This will delete the data in selected partition (s) only and should be the most efficient way to delete data from part of table since it will not create transaction logs and will be done just as fast as regular truncate but without having all the data deleted from the table.
Why is there no space in the transaction log?
To find out why space in the log cannot be reused, see the log_reuse_wait_desc column in sys.databases 1) If you want to delete all rows in the table, consider using TRUNCATE TABLE instead of delete. Truncate will not fill the transaction log. Remember that TRUNCATE will also reset any auto incrementing keys.
How to delete rows from a continuouslu table?
Since ours is a continuouslu updated table we could not follow approach 1 , i.e. usinng unrecoverable option as we would loose rows that are inserted after creating a temp table from the existing one. so What we did is a PL/SQL script commit. This solution really works fast for us.