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) disk-based tables, transactions on memory-optimized tables are ...
Applies to: SQL Server Azure SQL Database Azure SQL Managed Instance 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 ...
SQL Server 2014 (12.x) and SQL Server 2016 (13.x) have a limit of 8 indexes per memory-optimized table or table type. Starting with SQL Server 2017 (14.x) and in Azure SQL Database, there is no longer a limit on the number of indexes specific to memory-optimized tables and...
Applies to: SQL Server In-Memory OLTP provides full durability for memory-optimized tables. When a transaction that changed a memory-optimized table commits, SQL Server (as it does for disk-based tables), guarantees that the changes are permanent (will survive a database restart), provided th...
Learn how the query optimizer uses statistics about columns in memory-optimized tables to create query plans that improve query performance for In-Memory OLTP.
sql server 内存用作缓存 sql server内存表 内存优化表(Memory-Optimized Tables)是SQL Server 2014的新特性,目前仅适用于评估版(Evaluation Edition)、开发版(Developer Edition)和企业版(Enterprise Edition)。 本系列专题将从以下 5 个部分探讨内存优化表:...
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...
官网:https://docs.microsoft.com/zh-cn/sql/relational-databases/in-memory-oltp/introduction-to-memory-optimized-tables?view=sql-server-ver15 内存优化表是使用CREATE TABLE (Transact-SQL)创建而成的表。 默认情况下,内存优化表具有完全持久性。与(传统)基于磁盘的表上的事务一样,内存优化表上的事务具有完全...
SQL Server 2016的一项新特性是可以在“内存优化表(Memory Optimized Table)”上添加“列存储索引(Columnstore Index)”。要理解这是什么意思,我们应该首先解释术语列存储索引和内存优化表。 列存储索引是一种按照列而不是行组织数据的索引。每个数据块只存储一个列的数据,最多包含100万行。因此,如果数据为5列1000万...
you can bind multiple databases to the same pool. SQL Server allows binding a database without memory-optimized tables to a resource pool but it has no effect. You may want to bind a database to a named resource pool if, in future, you may want to create memory-optimized tables in the...