Updating multiple columns using forall virgindating com

11-Dec-2017 04:11

But like the rest of Oracle, the features have grown over the years and are a great way to pull data into memory via PL/SQL, manipulate it if desired, and perform DML in a single operation with the FORALL command. CUSTOMERS table to perform a FORALL insert and FORALL merge.The environment for this test is an Oracle 11g R2 Enterprise Edition installation with the default schemas (HR, SH, OE, etc) loaded.Let’s check the differences again to make sure it worked: Success!

Three NAME: TYPE combinations together form a single row in the table and a single set of values in the EXAMPLE%ROWTYPE object.In my opinion the real power of bulk binds comes in its ability to manipulate the collections in memory using standard PL/SQL code and then perform a straight DML to the DB with the results of the object.Regardless, here is the code used to perform the insert: declare 2 type t_customers is table of customers%rowtype; 3 lv_customers_tab t_customers; 4 begin 5 select * bulk collect into lv_customers_tab from customers; 6 forall rec in lv_customers_tab.first ..Methods such as FIRST, LAST, PRIOR, and NEXT are good for traversing the collection while methods such as EXPAND and DELETE are good for manipulation.As you iterate through a collection you can use and modify data with the COLLECTIONNAME(index). And once you’re done working with the collection you can write it as a contiguous chunk of data or as a sparse collection to your target table.

Three NAME: TYPE combinations together form a single row in the table and a single set of values in the EXAMPLE%ROWTYPE object.In my opinion the real power of bulk binds comes in its ability to manipulate the collections in memory using standard PL/SQL code and then perform a straight DML to the DB with the results of the object.Regardless, here is the code used to perform the insert: declare 2 type t_customers is table of customers%rowtype; 3 lv_customers_tab t_customers; 4 begin 5 select * bulk collect into lv_customers_tab from customers; 6 forall rec in lv_customers_tab.first ..Methods such as FIRST, LAST, PRIOR, and NEXT are good for traversing the collection while methods such as EXPAND and DELETE are good for manipulation.As you iterate through a collection you can use and modify data with the COLLECTIONNAME(index). And once you’re done working with the collection you can write it as a contiguous chunk of data or as a sparse collection to your target table.In this PL/SQL we performed the same steps as the INSERT, except we fed the lv_customers_tab object into a MERGE statement.