从十进制中删除一些尾随零

Question

I have column decimal(10,5) — VALUE , and column int — PICTURE .

So, I need to round VALUE to PICTURE digits after decimal point.

For example:

• if VALUE = 10.50000 and PICTURE = 2 , I want to get 10.50 ;
• if VALUE = 0.15371 and PICTURE = 3 , I want to get 0.154

If I use just Round() or Cast(Round(...) as nvarchar) , then I have trailing zeros. If I Cast() to float , then I loose zeros.

Is there any solution?

Answer 1

You can use the str() function with trim() :

select trim(str(value, 20, picture))

str() converts a number to a string with the specified length and precision. Sadly, it produces a fixed length string, left padded with spaces. The trim() removes the spaces.