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How to do minimal logging with INSERT statement?
A single INSERT…SELECT statement using FastLoadContext may fully log some rows while minimally logging others. Rows are inserted one at a time by the Index Insert operator and fully logged in the following cases:
What does minimal logging mean in SQL Server?
Remember that minimal logging means that SQL Server does not log each row insertion individually. Instead, only changes to metadata and allocation structures are logged. Changing from 897 to 898 rows enables minimal logging for this specific table.
Are there any index inserts that can be logged?
Without FastLoadContext, the only index inserts that can be minimally logged are those into an empty clustered index without secondary indexes, as covered in part two of this series. The minimal logging conditions for unindexed heap tables were covered in part one.
How many rows do you need for minimal logging?
The physical size of the row will increase by 14 bytes (from 60 bytes to 74), but the threshold for minimal logging remains unchanged at 898 rows. 898 rows meets the first requirement for more than 250 rows.
How to minimally log bulk load inserts in SQL Server?
By: Greg Robidoux | Updated: 2018-08-01 | Comments (6) | Related: More > Import and Export One of the advantages of using the Bulk-Logged recovery model is to minimally log bulk load commands, but still have other transactions fully logged.
Why is there minimal logging in bulk import?
Large data imports can cause the transaction log to fill rapidly if the full recovery model is used. In contrast, under the simple recovery model or bulk-logged recovery model, minimal logging of bulk-import operations reduces the possibility that a bulk-import operation will fill the log space.
How to do minimal logging in SQL Server?
Paul White is an independent SQL Server consultant specializing in performance tuning, execution plans, and the query optimizer. This post provides new information about the preconditions for minimally logged bulk load when using INSERT…SELECT into indexed tables.