I want to use postgresql to_number(numberString, format_mask)
. My numberString may contain leading zeros (I don't know the actual length of these zeros and the numberString in total). I want to trim these zeros and get the value as number.
I've read about this function here and currently using the format:
select to_number('00005469', '9999999999')
But if the length of '9's is less than the length of the numberString then I can't get the correct number. How can I make this work without writing a long list of '9' in format_mask?
You don't need to_number()
for this. Just cast the string to an integer:
select '00005469'::integer;
or using standard SQL:
select cast('00005469' as integer);