Row-Level Security in Memory-Optimized Tables Scenarios See Also Applies to: SQL Server Azure SQL Database Azure SQL Managed Instance Memory-optimized tables are created using CREATE TABLE (Transact-SQL). Memory-optimized tables are fully durable by default, and, like transactions on (traditional...
Applies to: SQL Server Azure SQL Database Azure SQL Managed InstanceAll memory-optimized tables must have at least one index, because it is the indexes that connect the rows together. On a memory-optimized table, every index is also memory-optimized. There are several ways in which an...
This article describes all the aspects of transactions that are specific to memory-optimized tables and natively compiled stored procedures. The transaction isolation levels in SQL Server apply differently to memory-optimized tables versus disk-based tables, and the underlying mechanisms are different. An...
SQL Server Query Processing for Disk-Based Tables Interpreted Transact-SQL Access to Memory-Optimized Tables Natively Compiled Stored Procedures Show 2 more Applies to: SQL Server Azure SQL Database Azure SQL Managed Instance In-Memory OLTP introduces memory-optimized tables a...
SQL Server 2014 CTP1 introduced hash indexes for memory-optimized tables. Hash indexes are very efficient for point lookups, when you know exactly the value you are looking for. However, they do not perform well if you need a range of value, for example a da...
A computer with enough memory to hold the data in memory-optimized tables. Memory-optimized data must not use more than 80% of the maximum server memory. 也就是不要超过整个INSTANCE内存的80%,但是数据库的增长有时候是无法预料的啊。下面开始我的测试: ...
内存优化表(Memory-Optimized Table,简称MOT)使用乐观策略(optimistic approach)实现事务的并发控制,在读取MOT时,使用多行版本化(Multi-Row versioning)创建数据快照,读操作不会对数据加锁,因此,读写操作不会相互阻塞。写操作会申请行级锁,如果两个事务尝试更新同一数据行,SQL Server检测到写-写冲突,产生错误(Error ...
When you insert data into memory-optimized tables in Microsoft SQL Server 2016, checkpoint file pairs of the memory-optimized tables may grow continuously. This eventually consumes far too much disk space. If you query the sys....
If a database has memory-optimized tables that were created in an earlier version of SQL Server or under a lower compatibility level than 130, the statistics need to be updated manually once to enable automatic update going forward.To enable automatic update of statistics for memory-optimized ...
Interpreted Transact-SQL access to memory-optimized tables is referred to as interop access. Starting with SQL Server 2016 (13.x), queries in interpreted Transact-SQL can scan memory-optimized tables in parallel, instead of just in serial mode. Memory-optimized table...