Can VARCHAR be used for dates?
The VARCHAR version is culture specific. You can’t easily sort the dates.
How does SQL store datetime?
According to SQL Server documentation, the database engine stores a DATETIME value as two integers. The first integer represents the day and the second integer represents the time.
What does datetime do in SQL?
In SQL, datetime date data type is used for values that contain both date and time. Microsoft defines it as a date combined with a time of day with fractional seconds that is based on a 24-hour clock. SQL specifically, has many data types that combine both the date and time representations making things more complex.
How date is stored in stored in database?
Use SimpleDateFormat. parse() to parse your date string into a Date object and store that or the getTime() of that in the database. Here’s an example of parsing the date: String pattern = “MM/dd/yyyy”; SimpleDateFormat format = new SimpleDateFormat(pattern); Date date = format.
Is it better to use varchar or datetime?
The VARCHAR version is culture specific. You can’t easily sort the dates. It is difficult to change the format if you want to later. It is unconventional, which will make it harder for other developers to understand. In many environments, using VARCHAR will use more storage space.
What happens when you convert time to date in SQL Server?
When you convert to date and time data types, SQL Server rejects all values it cannot recognize as dates or times. For information about using the CAST and CONVERT functions with date and time data, see CAST and CONVERT (Transact-SQL) This section describes what occurs when other date and time data types are converted to the datetime2 data type.
Is it possible to change the format of varchar?
The VARCHAR version is culture specific. You can’t easily sort the dates. It is difficult to change the format if you want to later. It is unconventional, which will make it harder for other developers to understand.
Can you subtract days from the varchar column?
You can’t easily add / subtract days to the VARCHAR version. It is harder to extract just month / year. There is nothing stopping you putting non-date data in the VARCHAR column in the database. The VARCHAR version is culture specific.