sql convert xml to varchar

DescriptionQuery () method (XML data type)This method is used to query the XML instance.Value () method (XML data type)This method is used to retrieve the value of the SQL type from an XML instance.exist () method (XML data type)T

Sometimes we need to save the data read from the database as XML directly. Here we can achieve this through SQL statements. First, create a table:Code Code highlighting produced by Actipro CodeHighlighter (freeware)http://www.CodeHighlighter.com/-->Use [IP]Go/***** Object: Table [DBO]. [sitedata] script Date: 17:41:11 ******/Set ansi_nulls onGoSet quoted_identifier onGoSet ansi_padding onGoCreate Table [

Read Catalogue Create a test table Insert test data The FOR XML path uses the General usage Custom node Name property of the field as XML We usually need to get a string that is spelled out by a field of multiple rows, and we can use the FOR XML path to handle it; The specific use of the FOR

First, create a table:Copy codeThe Code is as follows:USE [ip]GO/***** Object: Table [dbo]. [SiteData] script Date: 17:41:11 ******/SET ANSI_NULLS ONGOSET QUOTED_IDENTIFIER ONGOSET ANSI_PADDING ONGOCreate table [dbo]. [SiteData] ([Id] [int] IDENTITY (1, 1) not null,[SiteName] [varchar] (50) COLLATE Chinese_PRC_CI_AS not null,[SiteAdd] [varchar] (100) COLLATE Chinese_PRC_CI_AS not null,[BaiduSort] [int] not

In SQL Server, the for XML Path statement can be used to generate XML data for the queried data. Below are some examples of its application. Declare @ temptable table (userid int, username nvarchar (50); insert into @ temptable (userid, username) values (1, 'A') insert into @ temp, username) values (2, 'B') Select userid, username from @ temptable for

change? Do you remember the keyword as that lists the aliases? Yes, that's it! The code is as follows:SELECT Hobbyid as ' MyCode ', hname as ' MyName ' from @hobby for XML PATH (' Myhobby ') So at this point the node name of our column will also be programmed with our custom name Oh! Now that we can customize the nodes and columns of the row, can we build the output that we like? Or look at the code:SELECT ' [' +hname+ '] ' from @hobby for

lists the aliases? Yes, that's it! The code is as follows:SELECT Hobbyid as ' MyCode ', hname as ' MyName ' from @hobby for XML PATH (' Myhobby ')So at this point the node name of our column will also be programmed with our custom name Oh! Now that we can customize the nodes and columns of the row, can we build the output that we like? Or look at the code: SELECT ' [' +hname+ '] ' from @hobby for XML PATH

First set up a table: Copy Code code as follows: Use [IP] Go /****** object: Table [dbo]. [Sitedata] Script Date: 09/11/2010 17:41:11 ******/ SET ANSI_NULLS on Go SET QUOTED_IDENTIFIER ON Go SET ansi_padding on Go CREATE TABLE [dbo]. [Sitedata] ( [ID] [int] IDENTITY (1,1) not NULL, [SiteName] [varchar] (m) COLLATE chinese_prc_ci_as not NULL, [Siteadd] [varchar] (MB)

(openrowset,sp_xml_preparedocument)SQL statements: DECLARE @idoc int DECLARE @xml XML SELECT @xml =bulkcolumn from OPENROWSET (BULK ' F:\360Downloads\Apk\test.xml ', Single_blob) as x SELECT @xml EXEC sp_xml_preparedocument @Idoc OUTPUT , @

)Declare @ xmldata_idint Exec sp_xml_preparedocument @ xmldata_id output, @ xmldata ,'' Select @ customerid = customerid, @ customername = [name] FromOpenxml (@ xmldata_id, '// customer', 2) with (customeridint, [name]Varchar (50 )) Exec sp_xml_removedocument @ xmldata_id Update customer set customer. [name] = isnull (@ customername, customer. [name])Where customer. tblid = @ mermerid This process first declares that the variables we will

EXEC sp_xml_preparedocument @xmldata_id OUTPUT, @xmldata, ' SELECT @customerid = CustomerID, @customername = [name] FromOPENXML (@xmldata_id, '//customer ', 2) with (Customeridint, [name]varchar (50)) EXEC sp_xml_removedocument @xmldata_id UPDATE Customer SET Customer. [Name] = ISNULL (@customername, customer.[ Name])WHERE Customer.tblid = @customerid This process first declares that the variable we are going to use will hold the relevant informatio

your application rarely uses a database to store and retrieve data, the [N]varchar (max) column meets all your needs. Storing data in an XML column can provide additional benefits-the engine checks the data format specification or is valid, and supports fine-grained querying and updating of XML data. Reasons to store XML