replacing expresion in plpgsql - Mailing list pgsql-general

From Juan Pablo L
Subject replacing expresion in plpgsql
Date
Msg-id CABSYDaZGC9ZJydopXjkBzppRZ-wTBiYPMr2MS7NdVAFD3GJf_Q@mail.gmail.com
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Responses Re: replacing expresion in plpgsql  (Andreas Brandl <ml@3.141592654.de>)
List pgsql-general
Hi, i have a function that receives a parameter which represents days:

FUNCTION aaa_recharge_account(expdays integer)

i want to add those days to the CURRENT_DATE, but i do not know how to do it, i have tried several ways to replace that in an expresion like:

newexpdate := CURRENT_TIMESTAMP + interval '$1 days' using expdays;
(newexpdate is declared as timestamp)

and many more but none work, can someone please help me to find out how can i replace that parameter into an expression that i can add to CURRENT_TIMESTAMP or any other way that i can accomplish what i need which is to add that parameter to the current timestamp. thanks!!! 

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