Re: Query On Case structure

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От Haller Christoph
Тема Re: Query On Case structure
Дата
Msg-id 200110230815.KAA29258@rodos
обсуждение исходный текст
Ответ на Query On Case structure  ("Dinesh Parikh" <dineshp@newgen.co.in>)
Список pgsql-sql
> 
> Hi All,
> Can we create a query to find different values based on different criteria =
> from a table using case structure. For example
> Select Into :DBComment        Case When localComment Is Null Then Comment             When localComment = '123' Then
'NumericComment'             Else 'String Comment'        Endfrom PDBUserWhere UserIndex = 23;
 
> 
> Using such type of structure can we evaluate multiple values. e.g
> Select DBComment , DBName,         Case When localComment Is Null Then Comment             When localComment = '123'
Then'Numeric Comment'             Else 'String Comment'        End,        Case When localName Is Null Then UserName
        When localName = 'SuperUser' Then 'Supervisor'             Else 'NormalUser'        Endfrom PDBUserWhere
UserIndex= 23;
 
> 
> 
> Is this possible. If yes then How is it.
> Any help/suggestion may be benificial.
> 
> Regards
> Dinesh Parikh
> NSTL New Delhi
> 
Looks fine to me. What do you want by asking "If yes then How is it." 
Run the query and have a look on the result. 
Regards, Christoph 


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