| DATEADD( datepart, count, datetime )
Returns a datetime produced by adding several date parts to a datetime. The datepart can be one of year, quarter, month, week, day, hour, minute, or second. For example, the following example adds two months,
resulting in the value 2006-07-02 00:00:00.0:
| DATEPART( datepart, date )
Returns the value of part of a datetime value. The datepart can be one of year, quarter, month, week, day, dayofyear, weekday,
hour, minute, or second. For example, the following example gets the month May as a number, resulting in the value 5:
| DATETIME( string )
|| Converts a string value to a datetime. The string must have the format 'yyyy-mm-dd hh:nn:ss'.
| LENGTH( string )
|| Returns the number of characters in a string.
| SUBSTRING( string, start, length )
|| Returns a substring of a string. The start is the start position of the substring to return, in characters. The length is the length of the substring to return, in characters.