Updating record through cursor professional singles dating uk
I can even shorten things further and write CREATE PROCEDURE process_employee ( employee_id_in IN omag_employees.employee_id%TYPE) IS l_employee omag_employees%ROWTYPE; BEGIN SELECT * INTO l_employee FROM omag_employees WHERE employee_id = employee_id_in; END; The SELECT * syntax tells Oracle Database to fetch all the columns in the table.
I can also use %ROWTYPE to declare a record that has the same structure as a SELECT statement in a cursor.
It’s rare, in fact, that the data with which you are working is just a single value, so records and other composite datatypes are likely to figure prominently in your PL/SQL programs.
This article explores how you declare records, populate them with rows from a table, and even insert or change an entire row in a table by using a record.
Because only one exception can be raised at a time in a session, it doesn’t make any sense to allow you to check for two (or more) exceptions in a single handler.
The most common form of an INSERT statement is where column_list is the list of columns that will be populated on insert and expression_list is the list of expressions that will be assigned to their respective columns.A much better approach is to fetch that row of data into a record, and the best way to declare that record is as follows: CREATE PROCEDURE process_employee ( employee_id_in IN omag_employees.employee_id%TYPE) IS l_employee omag_employees%ROWTYPE; BEGIN SELECT employee_id, last_name, salary INTO l_employee FROM omag_employees WHERE employee_id = employee_id_in; END; When this procedure is compiled, PL/SQL looks up the structure of the omag_employees table and defines a record that has a field for each column in the table, with the same name and datatype.By using %ROWTYPE to declare the record, I also tell Oracle Database that this procedure the omag_employees table.Suppose I want to write a program to display the last names of all employees.An elegant and simple way to do this in PL/SQL is to take advantage of the cursor FOR loop (which I discussed in part 2 of this PL/SQL 101 series).
You can also, however, assign values directly to individual fields or even to the record as a whole by using the PL/SQL assignment operator (:=).