date-comparison

I’m trying to compare two dates in Android but im getting this when I write this SimpleDateFormat sdf = new SimpleDateFormat("ddMMyyyy"); String valid_until = "26052018"; final Date strDate = sdf.parse(valid_until); and if I put the try and catch like this I can’t compare the date because it says I didn't declared strDate . SimpleDateFormat is a concrete class for formatting and parsing dates in a locale-sensitive manner. It allows for formatting (date → text), parsing (text → date), and normalization. Good Approach You should use PROPER Date format. DEMO Date strDate=null; // Declare as

I have a requirement to match two dates and if their month/year are same, i should return true, otherwise false. Based on my search, i found the following solution. Is there any other better way to do this comparison?. Calendar cal1 = Calendar.getInstance(); Calendar cal2 = Calendar.getInstance(); cal1.setTime(date1); cal2.setTime(date2); boolean sameDay = cal1.get(Calendar.YEAR) == cal2.get(Calendar.YEAR) && cal1.get(Calendar.MONTH) == cal2.get(Calendar.MONTH); tl;dr match two dates and if their month/year are same Is there any other better way to do this comparison? Yes, the better way uses

i want to check var check_val in between two time var open_time and var close_time var open_time = "23:30"; var close_time = "06:30"; var check_val ="02:30"; if(Date.parse ( check_val ) > Date.parse ( open_time ) && Date.parse ( check_val ) < Date.parse ( close_time )){ var flag=1; } else { var flag=2 } the result is always else part Date.parse() accepts dates in RFC2822 or ISO8601 formats. In your case, it always returns NaN . Date.parse("23:30"); // NaN Using the appropriate Date format works as expected: var open_time = Date.parse("2011-10-09T23:30"); var close_time = Date.parse("2011-10

My table myTab has the column startDate , which has the datatype "DATE". The data in this column are stored like dd.mm.yyyy . Now I'm trying to get data with this query: SELECT * FROM myTab WHERE startDate like '%01.2015" Somehow it doesn't work and I don't know why. Hope someone can help. To make a text search on the date you would have to convert the date to text. It's more efficient if you calculate the first and last date for what you want to find and get everything between them. That way it's done as numeric comparisons instead of a text pattern match, and it can make use of an index if

I need to compare dates in MySQL ignoring the time portion in a DateTime column. I have tried the following SQL. SELECT * FROM order_table where order_date=date_format('2012-05-03', '%Y-%m-%d'); It doesn't retrieve any row even though there is a date 2012-05-03 10:16:46 in MySQL table. How can the time portion in the DateTime field be ignored while comparing dates in MySQL? Mark Byers You could use the DATE function: SELECT col1, col2, ..., coln FROM order_table WHERE date(order_date) = '2012-05-03' But this is more efficient, if your table is large and you have an index on order date : SELECT