本文以下面XML为例，对三种DML进行说明：declare @XMLVar xml = ' Windows Step By Step Bill Zack 49.99 Developing ADO .NET Andrew Brust 39.93 Windows Cluster Server Stephen Forte 59.99 ' 1.XML.Modify(Insert)语句介绍A.利用as first,at last,before,after四个参数将元素插入指定的位置 set @XMLVar.modify('insert as first into (/catalog[1]/book[1])')set @XMLVar.modify('insert as last into (/catalog[1]/book[1])')set @XMLVar.modify('insert before (/catalog[1]/book[1]/author[1])')set @XMLVar.modify('insert after (/catalog[1]/book[1]/author[1])')SELECT @XMLVar.query('/catalog[1]/book[1]'); 结果集为： 1: 2: 3: Windows Step By Step 4: 5: Bill Zack 6: 7: 49.99 8: 9: B.将多个元素插入文档中 --方法一：利用变量进行插入DECLARE @newFeatures xml;SET @newFeatures = N';one elementsecond element'SET @XMLVar.modify(' )insert sql:variable("@newFeatures")into (/catalog[1]/book[1])'--方法二：直接插入set @XMLVar.modify(')insert (one element,second element)into (/catalog[1]/book[1]/author[1])'SELECT @XMLVar.query('/catalog[1]/book[1]'); 结果集为： 1: 2: Windows Step By Step 3: Bill Zack 4: one element 5: second element 6: 7: 49.99 8: one element 9: second element 10: C.将属性插入文档中 --使用变量插入declare @var nvarchar(10) = '变量插入'set @XMLVar.modify('insert (attribute var {sql:variable("@var")}))into (/catalog[1]/book[1])'--直接插入set @XMLVar.modify('insert (attribute name {"直接插入"}))into (/catalog[1]/book[1]/title[1])'--多值插入set @XMLVar.modify('insert (attribute Id {"多值插入1"},attribute name {"多值插入2"}) )into (/catalog[1]/book[1]/author[1])'SELECT @XMLVar.query('/catalog[1]/book[1]'); 结果集为： 1: 2: Windows Step By Step 3: Bill Zack 4: 49.99 5: D.插入文本节点 set @XMLVar.modify('insert text{"at first"} as first)into (/catalog[1]/book[1])'SELECT @XMLVar.query('/catalog[1]/book[1]'); 结果集为： 1: 2: at first 3: Windows Step By Step 4: Bill Zack 5: 49.99 6: 注意：插入本文同样具体 as first，as last，before，after四种选项，可以参考A中的使用方法 E.插入注释节点 set @XMLVar.modify('insert )before (/catalog[1]/book[1]/title[1])'SELECT @XMLVar.query('/catalog[1]/book[1]'); 结果集为： 1: 2: 3: Windows Step By Step 4: Bill Zack 5: 49.99 6: 注意插入注释节点同样具体 as first，as last，before，after四种选项，可以参考A中的使用方法 F.插入处理指令set @XMLVar.modify('insert 2: Windows Step By Step 3: Bill Zack 4: 49.99this is a 2 step 5: 2.XML.Modify(delete)语句介绍--删除属性set @XMLVar.modify('delete /catalog[1]/book[1]/@category')--删除节点set @XMLVar.modify('delete /catalog[1]/book[1]/title[1]')--删除内容set @XMLVar.modify('delete /catalog[1]/book[1]/author[1]/text()')--全部删除set @XMLVar.modify('delete /catalog[1]/book[2]') SELECT @XMLVar.query('/catalog[1]'); 结果集为： 1: 2: 3: 4: 49.99 5: 6: 7: Windows Cluster Server 8: Stephen Forte 9: 59.99 10: 11: 3.XML.Modify(replace)语句介绍--替换属性set @XMLVar.modify('replace value of(/catalog[1]/book[1]/@category)) with ("替换属性")'--替换内容set @XMLVar.modify('replace value of(/catalog[1]/book[1]/author[1]/text()[1])) with("替换内容")'--条件替换set @XMLVar.modify('replace value of (/catalog[1]/book[2]/@category))with(if(count(/catalog[1]/book)>4) then "条件替换1"else "条件替换2")' SELECT @XMLVar.query('/catalog[1]'); 结果集为：
