Updating a view in plsql cool speed dating names


A table view column is an Oracle specific user-defined type (UDT), and is nested table or varray of a scalar data type.This blog post reviews table view columns, and extends concepts from Oracle Database 11g & My SQL 5.6 Developer Handbook (by the way virtually everything in the book is relevant from My SQL 5.1 forward).The error message states that (you) cannot perform DML on this nested .You can update the table view column value by replacing it with a new collection, and that’s done with a PL/SQL function.This type of function preserves the ordered list in the table view column by finding and replacing an element in the collection.You can find how to join nested tables helpful in understanding the You should note that table view columns are inherently static at creation.You must also update the entire nested table view column when using Oracle SQL.


Answering a reader’s question: How can you sort data inside an Oracle table view column?This blog post shows you how to perform the trick, but for the record I’m not a fan of nested tables.You should also understand that this direction isn’t portable across database implementations.It currently supported fully by the Oracle database and mostly by Postgre SQL database.

It demonstrates how you can use PL/SQL user-defined functions (UDFs) to supplement the SQL semantics for updating nested tables, and then it shows how you can reshuffle (sort) data store the sorted data in table view columns.

Before you implement table view columns, you should answer two design questions and one relational modeling principal.



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