But which month it is depends on the language the SQL system believes is being used:. The preceding dmy format says that an example date string of '' would be interpreted to mean the first day of March in the year If instead mdy was specified, then the same '' string would mean the third day of January in And if ymd was specified, there is no guarantee of what the output would be. The numeric value of '' is too large to be a day.
The format's parts are in a sensible sequence of largest unit to smallest. Consequently, this format sorts well. This format is considered to be the international format. It is international because the four digits of the year are unambiguous, and no country on Earth uses the archaic format of ydm. The dmy format does not sort well, but it is a sensible sequence of smallest unit to largest. The United States, and the Federated States of Micronesia, are the only countries that use mdy , which does not sort.
Contents Exit focus mode. Is this page helpful? Please rate your experience Yes No. Any additional feedback? Note Use the time , date , datetime2 and datetimeoffset data types for new work.
In this article. YYYY is four digits from through that represent a year. MM is two digits, ranging from 01 to 12, that represent a month in the specified year. DD is two digits, ranging from 01 to 31 depending on the month, that represent a day of the specified month. You can specify date data with a numeric month specified. If the order doesn't match the setting, the values aren't interpreted as dates. Out-of-order dates may be misinterpreted as out of range or with wrong values.
A four-part year is interpreted as the year. You can specify date data with a month specified as the full month name. For example, April or the month abbreviation of Apr specified in the current language; commas are optional and capitalization is ignored. Here are some guidelines for using alphabetical date formats: 1 Enclose the date and time data in single quotation marks '.
For languages other than English, use N' 2 Characters that are enclosed in brackets are optional. Values greater than or equal to the value of this option are in the century that comes before the cutoff year.
Curiously it depends upon which data type you are assigning it too. It would be fine for date and datetime2 but not for datetime. For the datetime data type and smalldatetime , the language settings affect this. Not exactly what I had in mind!
You might also think you'll be OK if you write a value like 12 Jan January 12 Sounds reasonable, but this one will have an issue with language settings as well. For example, January in French is Janvier. In general you're better off to just avoid any confusion.
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