Updating multiple rows without cursor gaming nerd dating

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TO_CHAR(SQL%ROWCOUNT)); END; / When you need precise control over query processing, you can explicitly declare a cursor in the declarative part of any PL/SQL block, subprogram, or package.You use three commands to control a cursor: You must declare a cursor before referencing it in other statements.PL/SQL also conforms to the current ANSI/ISO SQL standard.In addition to static SQL discussed in this chapter, PL/SQL also supports dynamic SQL, which enables you to execute SQL data definition, data control, and session control statements dynamically.For additional information on assigning values to PL/SQL variables, see "Assigning a SQL Query Result to a PL/SQL Variable".Oracle is transaction oriented; that is, Oracle uses transactions to ensure data integrity.

For additional information, including restrictions, on the use of SQL pseudocolumns, see value of a sequence, the sequence is incremented immediately and permanently, whether you commit or roll back the transaction.

It is important not to allow one operation to succeed while the other fails.

At the end of a transaction that makes database changes, Oracle makes all the changes permanent or undoes them all.

Each fetch retrieves the current row and advances the cursor to the next row in the result set.

You can store each column in a separate variable, or store the entire row in a record that has the appropriate fields, usually declared using DECLARE v_jobid employees.job_id%TYPE; -- variable for job_id v_lastname employees.last_name%TYPE; -- variable for last_name CURSOR c1 IS SELECT last_name, job_id FROM employees WHERE REGEXP_LIKE (job_id, 'S[HT]_CLERK'); v_employees employees%ROWTYPE; -- record variable for row CURSOR c2 is SELECT * FROM employees WHERE REGEXP_LIKE (job_id, '[ACADFIMKSA]_M[ANGR]'); BEGIN OPEN c1; -- open the cursor before fetching LOOP FETCH c1 INTO v_lastname, v_jobid; -- fetches 2 columns into variables EXIT WHEN c1%NOTFOUND; DBMS_OUTPUT.

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