我从具有使用T-SQL的XML列的表中选择。我想选择某种类型的节点,并为每个节点创建一行。
例如,假设我要从 人员 表中进行选择。该表具有用于 地址 的XML列。XML的格式类似于以下格式:
<address> <street>Street 1</street> <city>City 1</city> <state>State 1</state> <zipcode>Zip Code 1</zipcode> </address> <address> <street>Street 2</street> <city>City 2</city> <state>State 2</state> <zipcode>Zip Code 2</zipcode> </address>
我如何获得这样的结果:
名称 听听听听听听听听听 市 听听听听听听听听听 国家
乔·贝克|西雅图WA
乔·贝克|塔科马| WA
弗雷德·琼斯温哥华
这是您的解决方案:
/* TEST TABLE */ DECLARE @PEOPLE AS TABLE ([Name] VARCHAR(20), [Address] XML ) INSERT INTO @PEOPLE SELECT 'Joel', '<address> <street>Street 1</street> <city>City 1</city> <state>State 1</state> <zipcode>Zip Code 1</zipcode> </address> <address> <street>Street 2</street> <city>City 2</city> <state>State 2</state> <zipcode>Zip Code 2</zipcode> </address>' UNION ALL SELECT 'Kim', '<address> <street>Street 3</street> <city>City 3</city> <state>State 3</state> <zipcode>Zip Code 3</zipcode> </address>' SELECT * FROM @PEOPLE -- BUILD XML DECLARE @x XML SELECT @x = ( SELECT [Name] , [Address].query(' for $a in //address return <address street="{$a/street}" city="{$a/city}" state="{$a/state}" zipcode="{$a/zipcode}" /> ') FROM @PEOPLE AS people FOR XML AUTO ) -- RESULTS SELECT [Name] = T.Item.value('../@Name', 'varchar(20)'), street = T.Item.value('@street' , 'varchar(20)'), city = T.Item.value('@city' , 'varchar(20)'), state = T.Item.value('@state' , 'varchar(20)'), zipcode = T.Item.value('@zipcode', 'varchar(20)') FROM @x.nodes('//people/address') AS T(Item) /* OUTPUT*/ Name | street | city | state | zipcode ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ Joel | Street 1 | City 1 | State 1 | Zip Code 1 Joel | Street 2 | City 2 | State 2 | Zip Code 2 Kim | Street 3 | City 3 | State 3 | Zip Code 3