Select Case Sql
In this article we would explore case statement and its various use cases.
Select case sql. Runs one of several groups of statements depending on the value of an expression. Sql 1999 hat case als funktion f261 in core sql aufgenommen und damit verpflichtend gemacht. Select case statement visual basic 07 20 2015.
Führt eine von mehreren gruppen von anweisungen aus abhängig vom wert eines ausdrucks. 4 minutes to read 6. If there is no else part and no conditions are true it returns null.
Syntax select case testexpression case expressionlist statements case else elsestatements end select parts. Der case ausdruck kann nicht verwendet werden um den ablauf bei der ausführung von transact sql anweisungen anweisungsblöcken benutzerdefinierten funktionen und gespeicherten prozeduren zu steuern. If no conditions are true it will return the value in the else clause.
Runs one of several groups of statements depending on the value of an expression. Select case anweisung select case statement. We can use a case statement in select queries along with where order by and group by clause.
So once a condition is true it will stop reading and return the result. Sql server sql server allows for only 10 levels of nesting in case expressions. Case can be used in any statement or clause that allows a valid expression.
For example you can use case in statements such as select update delete and set and in clauses such as select list in where order by and having. The case statement in sql returns a value on a specified condition. It can be used in insert statement as well.
Select case testexpression select case testexpression. The case statement goes through conditions and return a value when the first condition is met like an if then else statement. So once a condition is true it will stop reading and return the result.
Select case anweisung visual basic select case statement visual basic 07 20 2015. The sql case statement the case statement goes through conditions and returns a value when the first condition is met like an if then else statement. De facto alle sql produkten unterstützt diese funktion heutzutage.
Führt eine von mehreren gruppen von anweisungen aus abhängig vom wert eines ausdrucks. Executes one of several groups of statements depending on the value of an expression.
