T-SQL XQUERY.MODIFY

XML数据操作案例

最新推荐文章于 2020-07-23 09:11:13 发布

最新推荐文章于 2020-07-23 09:11:13 发布 · 139 阅读

本文通过一个具体的案例展示了如何使用SQL语句对XML类型的数据进行增删改操作，并展示了如何查询包含特定关键字的数据。

UPDATE XmlsampleDB.dbo.Arthur
  SET BooksXML.modify('
  insert
  <book name="湘妃剑" />
  into
  /books[1]')
  WHERE 
  region = '台北'

DECLARE @bn NVARCHAR(max) = '剑'
SELECT 
ArthurName,
Region,
CONVERT(NVARCHAR(max),BooksXML.query('
for $s in /books/book
let $n := data($s/@name)
let $p := concat($n,"-")
where $s/@name[contains(.,sql:variable("@bn"))]
order by $p
return $p')) AS BookList
FROM
XmlsampleDB.dbo.Arthur

ArthurNameRegionBookList
金庸香港书剑恩仇录- 碧血剑-
古龙台北三少爷的剑- 多情剑客无情剑- 流星·蝴蝶·剑- 浣花洗剑录- 湘妃剑-
梁羽生香港七剑下天山-

 UPDATE XmlsampleDB.dbo.Arthur
  SET BooksXML.modify('
  delete
  books/book[11]')
  WHERE 
  region = '台北'

DECLARE @bn NVARCHAR(max) = '剑'
SELECT 
ArthurName,
Region,
CONVERT(NVARCHAR(max),BooksXML.query('
for $s in /books/book
let $n := data($s/@name)
let $p := concat($n,"-")
where $s/@name[contains(.,sql:variable("@bn"))]
order by $p
return $p')) AS BookList
FROM
XmlsampleDB.dbo.Arthur

ArthurNameRegionBookList
金庸香港书剑恩仇录- 碧血剑-
古龙台北三少爷的剑- 多情剑客无情剑- 流星·蝴蝶·剑- 浣花洗剑录-
梁羽生香港七剑下天山-

 UPDATE XmlsampleDB.dbo.Arthur
  SET BooksXML.modify('
  replace value of /books[1]/book[11]/@name[1]
  with "长生剑"')
  WHERE 
  region = '台北'

DECLARE @bn NVARCHAR(max) = '剑'
SELECT 
ArthurName,
Region,
CONVERT(NVARCHAR(max),BooksXML.query('
for $s in /books/book
let $n := data($s/@name)
let $p := concat($n,"-")
where $s/@name[contains(.,sql:variable("@bn"))]
order by $p
return $p')) AS BookList
FROM
XmlsampleDB.dbo.Arthur

ArthurNameRegionBookList
金庸香港书剑恩仇录- 碧血剑-
古龙台北三少爷的剑- 多情剑客无情剑- 流星·蝴蝶·剑- 浣花洗剑录- 长生剑-
梁羽生香港七剑下天山-