This example creates a database calledMusic. This is the most basic way to create a database using T-SQL. You can also do things like specify where to put the database data files and transaction log files, how much disk space they should use up, how much they're allowed to grow, an...
SQL -- Create a user on a user database mapped to a login.CREATEUSER[job-agent-UMI]FROMLOGIN [job-agent-UMI];-- Grant permissions as necessary to execute your jobs. For example, ALTER and CREATE TABLE:GRANTALTERONSCHEMA::dboTOjob-agent-UMI;GRANTCREATETABLETOjob-agent-UMI; ...
SQL 複製 USE msdb; GO --distribute the publication to subscriber, for example EXECUTE dbo.sp_start_job N'DISTRIBUTOR-PUBLICATION-SnapshotRepl-SUBSCRIBER'; GO 連接訂閱者並查詢複製的資料。 在訂閱者上,執行下列查詢來檢查複寫是否運作正常: SQL 複製 SELECT * FROM [Sales].[dbo].[Customer]; ...
有关创建可用性组的其他 Transact-SQL 代码示例,请参阅 CREATE AVAILABILITY GROUP (Transact-SQL)。 在承载辅助副本的服务器实例上,将辅助副本联接到可用性组。 下面的代码示例将 COMPUTER02 上的辅助副本联接到 MyAG 可用性组。 SQL 复制 -- On the server instance that hosts the secondary replica, -- ...
While I've made many references to using the SUM() function, of course this technique works with any of the other aggregate functions as well, such as MIN() or AVG(). For example, you could return only Orders where the orderAmount is below the average for the product that was ordered...
从SQL中可以看出PIVOT有两个步骤 An aggregate function, which will aggregate if multiple values exist. In the initial SELECT statement that returns product data, there were many duplicate rows. This example uses SUM whenever this occurs, which will add up product quantities if there ...
Starting SQL Server 2008 and above you can use the query_hash functionality to isolate these common patterns. Here is an example of a query which can do that and list one sample query for each ‘pattern’: select * from (select ST.text, ROW_NUMBER() OVER (PARTITION BY query_hash ORDE...
Learn the basics of the In-Memory OLTP performance features of SQL Server and Azure SQL Database with quick explanations and core code samples for developers.
The following example shows the SQL Server syntax that runs a stored procedure or function. [ { EXEC | EXECUTE } ] { [ @return_status = ] { module_name [ ;number ] | @module_name_var } [ [ @parameter = ] { value | @variable [ OUTPUT ] | [ DEFAULT ]...
SQL Server check if ( ROW_NUMBER() OVER(ORDER BY Id) = 1 ) first, it means ( Id = 1001 ) Then check if ( Id = 1002 ) In this order the output will be empty. So we have a paradox. This example shows why we cannot use Window Functions in WHERE clause. You can think more ...