Create a database Create a table Insert and update data in a table Show 3 more Applies to: SQL Server Azure SQL Database Azure SQL Managed Instance Analytics Platform System (PDW) SQL database in Microsoft Fabric Note The Get Started Querying with Transact-SQL learning path provides mor...
One workaround is to create a user-defined "after insert" trigger on the OlapQueryLog table in your relational database to duplicate the newly inserted rows into your own table. This table can be manually maintained as you w...
One workaround is to create a user-defined "after insert" trigger on the OlapQueryLog table in your relational database to duplicate the newly inserted rows into your own table. This table can be manually maintained as you want. For example: create trigger SaveQueryLog on OlapQueryLog after...
In this quickstart, you learn how to use the MSSQL extension for Visual Studio Code to connect to a database, whether it's running locally, in a container, or in the cloud. Then you learn how to use Transact-SQL (T-SQL) statements to cr...
Nested queries (use one in another) Feature-rich API to operate with SQL queries SQL query parser SQL analyzer API to create and modify user queries SQL formatter/beautifier Build friendly environment to work with SQL queries and data Organize Database schema tree ...
Create a new .NET project Insert code to query the database in Azure SQL Database Run the code Related content Applies to: Azure SQL Database Azure SQL Managed Instance Azure Synapse AnalyticsIn this quickstart, you'll use .NET and C# code to connect to a database. You'll then run...
Create a database Create a table in your new database Insert rows into your new table Query the new table and view the results Use the query window table to verify your connection properties This article covers connecting and querying an instance of SQL Server. For Azure SQL, seeConnect and...
In this quickstart, you learn how to use the MSSQL extension for Visual Studio Code to connect to a database, whether it's running locally, in a container, or in the cloud. Then you learn how to use Transact-SQL (T-SQL) statements to create a database, define a table, insert data...
MemSQL的架构类似一个MPP(SQL Server PDW),有两种role : aggregator node + leaf node ,table data按分片存储在leaf node中,包括hash/broadcast两种分布 aggregator node是client入口,做parse+optimize+planning, 完成优化后将计划拆分成若干subplan分发到各个leaf node,leaf node负责数据存储和subplan执行。
其他:CALL/CREATE EXTENSION/EXPLAIN/GRANT/SECURITY LABEL/等 聚合周期内,同聚合主键第一个Query的查询的类型。 duration integer 查询的耗时(ms)。 duration代表SQL的总耗时,包含: Optimization Cost:生成执行计划的耗时,耗时较高通常是因为SQL较复杂。 Start Query Cost:Query启动时间,耗时较高通常是因为在等锁或...