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SQL Server-XML-Lesson 3-Using the XML type, and the methods query(), value(), exist(), modify() | SQL courses

In this video We explore the powerful methods: query(), value(), exist(), and modify().

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Title: SQL Server-XML-Lesson 3-Using the XML type, and the methods query(), value(), exist(), modify()

Duration:  16 minutes

Summary: We start this video with the discussion of the xml type. We created a table with an xml column. Then we inserted and updated some data in this column. Then we explore the powerful methods: query(), value(), exist(), and modify(). Query() takes an XPath expression and returns the data matching the expression. Value() takes an XPath expression as the first parameter, and the type expected as the second parameter. It returns the value that matched the expression. Exist(), as the name implies returns 0 (there is no value matching the expression) or 1(there is a value matching the expression). Finally modify() inserts some xml data after (or before) a matching set.

Methodology of the development of example: Good coding standard and simplified design to illustrate the key points.

Technology Used: XML and SQL Server 2008

Keywords: XML, table, identity, insert, null, query(), value(), exist(), modify().



Senior Software Engineer with experience in C#, JavaScript, jQuery, Knockout JS, Kendo UI, HTML5, and SQL Server. Ayad has more than 20 years experience in technical training and teaching. Contributor to MrBool for about 7 years.

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