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The following section discusses the scenario of how to use the SQL truncate Table option for data removal for partitioned table How and when to use the SQL truncate table with Partition clause? SQL TRUNCATE TABLE and using WITH PARTITIONS () option enables the mechanism to truncate the data within the defined partition number(s) or a range of partitions. The Partitioning feature has been an Enterprise edition feature, starting from SQL 2005, but for the first time, it has been made available on all the editions of SQL 2016.
However, with SQL Server 2016, some interesting features with the truncate command have been introduced, which serve the purpose of data removal with minimal logging. The data truncation/deletion/reshuffling operations had to rely on partition switching and merge mechanism. Any attempt to restore resulted in dropping of the Partition Function and the Partition Scheme prior to the database backup and restore process this is not the case with SQL 2016. The earlier versions of SQL Server required a lot of extra effort in restoring the database with partitioned tables to a non-Enterprise edition of SQL Server. For instance, if a query is written to use a partition key, then the query execution improves deterioration in performance may be linked to not using the partition key in this case A proper indexing strategy may suffice for some of the performance problems in many such use cases. In most cases, partitioning would not improve performance. If someone complains about slowness of a query, it isn’t necessary that the related tables need to be partitioned. The monthly partition as mentioned in the second point is a good example for this.ĭoes the system involve a huge volume of data loading and reporting? Are user queries frequently getting locked or blocked? If yes, partitioning could be an option to ease the situation, since the Query Optimizer would be able to handle the execution better. This will let the SQL Query Optimizer to decide and select the best plan for query execution.
Partitions are logical mapping of the physical data.
Let’s understand the objective of SQL partitioning, why we need partitioning, and the factors that are vital to decide on a Table Partitioning Strategy. Provide inline comparison of features available in the different editions of SQL 2016ĭiscuss the SQL truncate partition enhancements in SQL 2016ĭemonstrate the SQL truncate table partition use cases Identify the right candidate for table partitioning Truncate a Range with multiple individual partitionsĭefine the importance and the implication of SQL table partitioning The following are the various truncating options available in SQL 2016 One of the biggest challenges for a DBA is to identify the right candidate for table partitioning, as it requires expertise in design and implementation. The idea behind this article is to discuss the importance and the implication of SQL Partition and understand the SQL truncate command partitioning enhancements in SQL 2016