i have tried "ln.PRODAMOUNT=CONVERT(FLOAT,100)". Its not worked.

also ROUND(ln.PRODAMOUNT,0)=100 its worked.

Thanks. If i change data type on table now, might lose any data?

Yes. I read this feature. I'll look what i can do. Thanks

Of course i thought this simple model. But it's need to some kind of time out model. As GilaMonster said.

I interesting maybe sql provide this kind of model in default.