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The SQL EXCEPT operator takes the distinct rows of one query and returns the rows that do not appear in a second result set. For purposes of row elimination and duplicate removal, the EXCEPT operator does not distinguish between NULLs. The EXCEPT ALL operator does not remove duplicates, but if a row appears X times in the first query and Y ...
SQL allows triggers to fire on updates to specific columns; As of version 9.0 of PostgreSQL this feature is also implemented in PostgreSQL. The standard allows the execution of a number of SQL statements other than SELECT, INSERT, UPDATE, such as CREATE TABLE as the triggered action. This can be done through creating a stored procedure or ...
SQL Server Agent is a component of Microsoft SQL Server which schedules jobs and handles other automated tasks. [1] It runs as a Windows service so it can start automatically when the system boots or it can be started manually.
SQL Server Management Objects (SMO) are .NET objects introduced by Microsoft as of Microsoft SQL Server 2005, designed to allow for easy and simple programmatic management of Microsoft SQL Server. [1] Using SMO, .NET programmers can design applications similar in functionality to Microsoft's SQL Server Management Studio.
SELECT * FROM (SELECT ROW_NUMBER OVER (ORDER BY sort_key ASC) AS row_number, columns FROM tablename) AS foo WHERE row_number <= 10 ROW_NUMBER can be non-deterministic : if sort_key is not unique, each time you run the query it is possible to get different row numbers assigned to any rows where sort_key is the same.
Transact-SQL is central to using Microsoft SQL Server. All applications that communicate with an instance of SQL Server do so by sending Transact-SQL statements to the server, regardless of the user interface of the application. Stored procedures in SQL Server are executable server-side routines. The advantage of stored procedures is the ...
Reporting Services was first released in 2004 as an add-on to SQL Server 2000. Subsequent versions have been: Second version with SQL Server 2005 in November 2005; Third as part of SQL Server 2008 R2 in April 2010; Fourth version as part of SQL Server 2012 in March 2012; Fifth version as part of SQL Server 2014 in March 2014
SQL Server 2008 also makes the databases available via Windows PowerShell providers and management functionality available as Cmdlets, so that the server and all the running instances can be managed from Windows PowerShell. [26] The final SQL Server 2008 service pack (10.00.6000, Service Pack 4) was released on September 30, 2014. [27]