|Oracle® Database SQL Language Reference
11g Release 2 (11.2)
|PDF · Mobi · ePub|
INSERTXMLCHILDBEFORE inserts one or more collection elements as children of target parent elements. The insertion for each target occurs immediately before a specified existing collection element. The existing XML document that is the target of the insertion can be schema-based or non-schema-based.
XMLType_instance identifies the XML data that is the target of the insertion.
XPath_string locates the parent elements within target-data; child-data is inserted under each parent element.
child_expr is a relative XPath 1.0 expression that locates the existing child that will follow the inserted child-data. It must name a child element of the element indicated by parent-xpath, and it can include a predicate.
value_expr is the XMLType child element data to insert. Each top-level element node in this argument must have the same data type as the element indicated by child_expr.
namespace_string specifies the namespace for the parent elements, existing child element, and child element XML data to be inserted.
See Also:Oracle XML DB Developer's Guide for more information about this function
The following example is similar to that for
INSERTCHILDXML, but it adds a third
/Owner node before the
/Owner node added in the other example. The output of the query has been formatted for readability.
UPDATE warehouses SET warehouse_spec = INSERTCHILDXMLBEFORE(warehouse_spec, '/Warehouse/Building', 'Owner', XMLType('<Owner>ThirdOwner</Owner>')) WHERE warehouse_id = 3; SELECT warehouse_name, EXTRACT(warehouse_spec, '/Warehouse/Building/Owner') "Owners" FROM warehouses WHERE warehouse_id = 3; WAREHOUSE_NAME Owners ----------------------------------- ------------------------------ New Jersey <Owner>GrandCo</Owner> <Owner>ThirdOwner</Owner> <Owner>LesserCo</Owner>