Every Oracle error has a number, but exceptions must be handled by name.
So, PL/SQL predefines some common Oracle errors as exceptions.
select count(distinct Count) as num Count, Num as acc Num , Num as unit Num from table A a,table S s where Num is not null and s.fk_id= (select id from table D where sid=Num ) group by Num ,Num ; update (select count(distinct Count) as num Count, Num as acc Num , Num as unit Num from table A a,table S s where Num is not null and s.fk_id= (select id from table D where sid=Num ) group by Num ,Num ) k set Num=Count; I am trying to update unit Num with value of num Count.
The above query is not working when used as a view.
NOTE: If you click F5, the detail is shown to the Script Output tab. As before you'll need to commit the changes to save them to the database. As in the above example, you can update data using the SQL Worksheet, using SQL commands, or you can use the data tab in the table definition and update individual rows. Once again you can update rows easily by using the Data tab interface.
As you did in the previous exercise, click on a table in the Connections Navigator. Notice by clicking on a table different from the previous one worked on, the tab is replaced with the new selected table.
INSERT ALL INTO mytable (column1, column2, column_n) VALUES (?
Notice that once you have updated the record, an asterisk (*) shows next to the record.
As before, click the Commit Changes to update the record in the database.
You will be given questions that you need to solve.
After each exercise, we provide the solution so you can check your answer.