decimal-point

My trigger looks like this: begin IF ((NEW.tgebucht >= NEW.tteilnmax) AND (NEW.tgebucht!=0) AND (OLD.tstatus=0)) THEN SET NEW.tstatus = 1; ELSEIF ((NEW.tgebucht < NEW.tteilnmax) AND (OLD.tstatus=1)) THEN SET NEW.tstatus =0; END IF; IF ((0,25*NEW.tteilnmax)>=(NEW.tteilnmax-NEW.tgebucht)) THEN SET NEW.trestplatze =1; END IF; end And I am getting an error like this: Operand should contain 2 column(s) I am not really sure why, I know it is related to second if but I can't configure where, does anyone has an idea what to change? Am I doing something wrong here? Any help would be appreciated. The

I want to convert a string to the tightest possible datatype: int or float. I have two strings: value1="0.80" #this needs to be a float value2="1.00" #this needs to be an integer. How I can determine that value1 should be Float and value2 should be Integer in Python? def isfloat(x): try: a = float(x) except ValueError: return False else: return True def isint(x): try: a = float(x) b = int(a) except ValueError: return False else: return a == b Python float objects have an is_integer method : from ast import literal_eval def parses_to_integer(s): val = literal_eval(s) return isinstance(val, int)

I am using BigDecimal to get some price values. Requirement is something like this, what ever the value we fetch from database, the displayed valued should have 2 decimal points. Eg: fetched value is 1 - should be displayed as 1.00 fetched value is 1.7823 - should be displayed as 1.78 I am using setScale(2, BigDecimal.ROUND_HALF_UP) but still some places, if the data from DB is a whole number then the same is being displayed !! I mean if the value is 0 from DB its displayed as 0 only. I want that to be displayed as 0.00 Thanks BigDecimal is immutable, any operation on it including setScale(2,

I have a whole lot (hundreds of thousands) of rather large (>0.5MB) files, where data are numerical, but with a comma as decimal separator. It's impractical for me to use an external tool like sed "s/,/./g" . When the separator is a dot, I just use textscan(fid, '%f%f%f') , but I see no option to change the decimal separator. How can I read such a file in an efficient manner? Sample line from a file: 5,040000 18,040000 -0,030000 Note: There is a similar question for R , but I use Matlab. With a test script I've found a factor of less than 1.5. My code would look like: tmco = {'NumHeaderLines',

I would like to read and write pi as 3,141592 instead of 3.141592 , as using the comma is common in many European countries. How can I accomplish this with iostream s? In other words cout << 3.141592; should print 3,141592 to standard output. You should use basic_ios::imbue to set the preferred locale. Take a look here: http://www.cplusplus.com/reference/ios/ios_base/imbue/ Locales allow you to use the preferred way by the user, so if a computer in Italy uses comma to separate decimal digits, in the US the dot is still used. Using locales is a Good Practice. But if you want to explicitly force