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When character data that represents only date or only time components is cast to the datetime or smalldatetime data types, the unspecified time component is set to .000, and the unspecified date component is set to 1900-01-01.The optional time zone indicator, Z, is used to make it easier to map XML datetime values that have time zone information to SQL Server datetime values that have no time zone. Other time zones are indicated with HH: MM offset in the or - direction. When you convert to character data from smalldatetime, the styles that include seconds or milliseconds show zeros in these positions.can be one of the values shown in the following table. Beginning with SQL Server 2012, the only styles that are supported when converting from date and time types to datetimeoffset are 0 or 1. yyyy-mm-dd Thh:mi:(no spaces) Note: When the value for milliseconds (mmm) is 0, the millisecond value is not displayed.For example, the value '2012-11-07T.000 is displayed as '2012-11-07T'.yyyy-mm-dd Thh:mi:Z (no spaces) Note: When the value for milliseconds (mmm) is 0, the milliseconds value is not displayed.When you explicitly or implicitly cast the xml data type to a string or binary data type, the content of the xml data type is serialized based on a set of rules.
The following illustration shows all explicit and implicit data type conversions that are allowed for SQL Server system-supplied data types. There is no implicit conversion on assignment from the sql_variant data type, but there is implicit conversion to sql_variant.For more information, see Collation Precedence (Transact-SQL). Business Entity ID First Name Last Name Title Sick Leave --------- ------------- ------- --------` Ken Sanchez NULL * Terri Duffy NULL * Roberto Tamburello NULL * Rob Walters NULL * Gail Erickson Ms.To assign a different collation to the output, apply the COLLATE clause to the result expression of the CAST or CONVERT function. * (5 row(s) affected) SQL Server returns an error message when nonnumeric char, nchar, varchar, or nvarchar data is converted to int, float, numeric, or decimal.For example, the value '2012-11-07T.000 is displayed as '2012-11-07T'mon yyyy hh:mi:ss:mmm AM In this style, mon represents a multi-token Hijri unicode representation of the full month's name.This value does not render correctly on a default US installation of SSMS.