Search Postgresql Archives
Converting between varchar and float when updating
[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]
I have a table with the following schema:
CREATE TABLE foo (bar VARCHAR(32));
Every bar value has a format like a float, e.g. "2.5". Now I want that value multiplied by two and saved again as varchar. I was hoping to do smth like:
UPDATE foo SET bar = TO_VARCHAR( TO_FLOAT(bar) * 2); -- INCORRECT!!!!
How is that done?
I know that the bar attribute ought to have type FLOAT, but I have to work with this legacy database. And anyway this table will rarely be updated.
[PHP on Windows]
[Find Someone Nice]
[Postgresql & PHP]