如果在该点之后没有值，则如何去除尾随小数点

Question

I need to strip of the decimal point only if it has no value after the point eg. I100. to I100 , strip. but I100.1 to I100.1 no strip.

I tried with

SELECT rtrim(to_char(100.100, 'FM999999999999999990'), '.') FROM dual

But this doesn't work as expected.

Answer 1

if the value is a string, you do not have to convert it to string once more. Just use the function rtrim

 SELECT rtrim('100.100', '.') FROM dual; 

\n|  RTRIM('100.100','.') | \n|  :------------------- | \n|  100.100 | \n

 SELECT rtrim('100.', '.') FROM dual 

\n|  RTRIM('100.','.') | \n|  :---------------- | \n|  100 | \n

db<>fiddle here