Informix defining an INTERVAL with a parameter

I am doing the following in Informix to delete rows more than 20 seconds old.

delete from sometable where someDateColumn < (current - interval (20) second to second);

However, I want to make the interval configurable in a stored procedure, but I can't do

CREATE PROCEDURE i_hate_informix (prm_timeframe int) DELETE sometable WHERE someDateColumn < (current - interval (prm_timeframe) second to second); END PROCEDURE;


I found the answer myself.

Interval can not be defined dynamically with a variable. But you can use "units second" so my procedure becomes

CREATE PROCEDURE i_hate_informix (prm_timeframe int) DELETE sometable WHERE someDateColumn < (current - prm_timeframe units second); END PROCEDURE;


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