TSQL将Xml DateTime（xs:DateTime）转换为SQL DateTime

Posted 2021-02-27

This is as small as this can go:
'xs:dateTime(sql:variable("@stringDate"))'
It needs to be a literal string for the Value() function.

Xml Datatype
http://msdn2.microsoft.com/en-us/library/ms189887.aspx

Sql:Variable() Function
http://msdn2.microsoft.com/en-us/library/ms188254.aspx

'xs:dateTime( val )'
http://www.w3schools.com/xpath/xpath_functions.asp#datetime

Xml Datatype Methods
http://msdn2.microsoft.com/en-us/library/ms190798.aspx

DECLARE @stringDate VARCHAR(30);
DECLARE @myXmlDate xml
DECLARE @serializedDate datetime
DECLARE @xQuery VARCHAR(100)
SET @stringDate = '2007-10-03T11:24:07.003+12:00'
SET @myXmlDate = CAST('' AS xml) --Gets an empty Xml datatype
SET @serializedDate = @myXmlDate.value('xs:dateTime(sql:variable("@stringDate"))', 'datetime')
SELECT @serializedDate