Sql server updating existing xml data using replace function dating table manners

Posted by / 08-Jul-2019 09:08

Sql server updating existing xml data using replace function

The XML Data type has definite uses, but the way of interrogating, retrieving, and manipulating the values of properties and attributes within XML have been so foreign to the SQL language as to be somewhat of a barrier to their use.

SELECT OBJECT_VALUE FROM purchaseorder WHERE XMLExists('/Purchase Order[Special Instructions="Expedite"]' PASSING OBJECT_VALUE); OBJECT_VALUE -------------------------------------------------------------------- casts its first argument to the scalar SQL data type specified by its second argument.

So far we’ve looked at how to parse existing JSON objects and how to create new JSON objects.

Today I want to look at the easy ways to modify JSON objects as well as the (mostly) easy ways to delete elements from a JSON object. I have been impressed with all of the new JSON functionality in SQL Server 2016 except for the deletion of array elements.

The introduction of the xml data type, with its own set of methods for processing xml data, made it possible for SQL Server developers to create columns and variables of the type xml.

Deanna Dicken examines the modify() method, which provides for data manipulation of the XML data stored in the xml data type via XML DML statements.

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The first argument is a SQL expression that is evaluated.