What this query will return:

Select  Extract(Month from 4/20/2007) from dual;

I suspect "dual" is not for PGSQL but Oracle. But I need to run the above
query. What is the replacement of "dual" in PGSQL.


Bart Degryse wrote:
> 
> Please always include the error message you get when something isn't
> working.
>  
> If you defined your table with quoted identifiers (create table
> "StudentFeesPayment" as ...) then try
>   Select max("ReceiptNo") from "StudentFeesPayment" where Extract(Month
> from "ReceiptMonthYear")=4;
> else try
>   Select max(ReceiptNo) from StudentFeesPayment where Extract(Month
> from ReceiptMonthYear)=4;
> 
> 
> 
>>>> "Rohit Khare" <[EMAIL PROTECTED]> 2007-04-20 14:19 >>>
> I am using PGSQL 8.2.3 on Windows XP.
> 
> I have a table called "StudentFeesPayment" with columns "ReceiptNo" and
> "ReceiptMonthYear".
> The column, "ReceiptMonthYear" stores date in the format "yyyy-mm-dd".
> I have to find the max(ReceiptNo) where Month of (ReceiptMonthYear)=4.
> Or whatever month I give. 
> 
> I tried:
> 
> Select max(ReceiptNo) from StudentFeesPayment where
> Extract(Month('ReceiptMonthYear'))=4;
> 
> But it is not working. How to do it?
> 
> 
> 

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