TheCASE expressionis used to build IF … THEN … ELSE statements into your Microsoft SQL Server T-SQL code. CASE is used within a SQL statement, such as SELECT or UPDATE. Don’t mistake CASE for theIF ELSEcontrol of flow construct, which is used to evaluate the conditional execution of ...
Syntax for SQL Server, Azure SQL Database and Azure Synapse Analytics. syntaxsql -- Simple CASE expression:CASEinput_expressionWHENwhen_expressionTHENresult_expression[ ...n ] [ELSEelse_result_expression]END-- Searched CASE expression:CASEWHENBoolean_expressionTHENresult_expression[ ...n ] [ELSEels...
Note that when running a CASE expression against a linked server, the optimizer on the other side may expand this to a nested CASE expression and cause this issue, even though it’s not what you wrote; seethis examplefrom Paul White. Summary The CASE expression is powerful, but has some ...
Applies to:SQL ServerAzure SQL DatabaseAzure SQL Managed Instance Creates a user-defined function (UDF), which is a Transact-SQL or common language runtime (CLR) routine. A user-defined function accepts parameters, performs an action such as a complex calculation, and returns the result of ...
Examples The following example sets Trace Flag 3205 on for all sessions at the server level by using DBCC TRACEON. SQL Copy DBCC TRACEON (3205, -1); You can enable all plan-affecting hotfixes controlled by trace flags 4199 and 4137 for a particular query. SQL Copy SELECT x FROM ...
Posted byMadhivananat8:14 PMNo comments: Share to Pinterest Labels:Transact SQL T-SQL Nested Case Statement in SQL Server This article is a continuation ofSQL Server CASE Statement and CASE WHEN Examples. Today we will learn about Nested Case Statement in SQL Server....
Examples Trace flags Related content Applies to: SQL Server Azure SQL Managed Instance Trace flags are used to set specific server characteristics or to alter a particular behavior. For example, Trace Flag 3226 is a commonly used startup trace flag that suppresses successful backup messages in ...
A word on Assembler examples I picked four short SQL Server functions, in gently increasing level of complexity, to illustrate stack frames, finished with the prologue of a bigger function. When you dump functions in Windbg using the uf command, e.g. uf sqllang!CSecContextToken::GetImpersonati...
examples used in this article uses the Pubs database that comes as a sample database when you install SQL Server. If you need to rebuild the Pubs database, follow the steps to install a fresh copy : Run the osql command prompt utility and detach the Pubs database from SQL Server by us...
Applies to: SQL Server 2012 (11.x) and later versions, and Azure SQL Database. Some of the previous examples executed EXECUTE dbo.uspGetEmployeeManagers 6; which returned seven columns. The following example demonstrates using the WITH RESULT SET syntax to change the names and data types of ...