Data that is recognizable as a date can be converted to datetime, smalldatetime, date, or time. Incorrect month names lead to syntax errors. Dates that fall outside the acceptable range for the datatype lead to arithmetic overflow errors.
When datetime values are converted to smalldatetime, they are rounded to the nearest minute.
When converting date data to a character type, use style numbers 1 through 7 (101 through 107) or 10 through 12 (110 through 112) in Table 2-5 to specify the display format. The default value is 100 (mon dd yyyy hh:miAM (or PM )). If date data is converted to a style that contains a time portion, that time portion reflects the default value of zero.When converting time data to a character type, use style number 8 or 9 (108 or 109) to specify the display format. The default is 100 (mon dd yyyy hh:miAM (or PM)). If time data is converted to a style that contains a date portion, the default date of Jan 1, 1900 is displayed.