What happens if updating cursor did not fetch any records 599 online dating asian girls underground pdf

Posted by / 22-Aug-2020 05:56

What happens if updating cursor did not fetch any records

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.

See Chapter 7, "Performing SQL Operations with Native Dynamic SQL".

CREATE TABLE employees_temp AS SELECT employee_id, first_name, last_name FROM employees; DECLARE emp_id employees_temp.employee_id%TYPE; emp_first_name employees_temp.first_name%TYPE; emp_last_name employees_temp.last_name%TYPE; BEGIN INSERT INTO employees_temp VALUES(299, 'Bob', 'Henry'); UPDATE employees_temp SET first_name = 'Robert' WHERE employee_id = 299; DELETE FROM employees_temp WHERE employee_id = 299 RETURNING first_name, last_name INTO emp_first_name, emp_last_name; COMMIT; DBMS_OUTPUT.

They are also created when a SELECT statement that returns just one row is executed.

Oracle is transaction oriented; that is, Oracle uses transactions to ensure data integrity.

Even though the cursor stores multiple records, only one record can be processed at a time, which is called as current row.

When you fetch a row the current row position moves to next row.

Will I run out of Sort area size or TEMP space ( The Select is with 3-4 Group By clauses).

I had run it about 2 months back and it completed in 3 hours. Tom, You Say ""instrument" their code with calls to dbms_application_info " Can you please explain how to do it?

what happens if updating cursor did not fetch any records-65what happens if updating cursor did not fetch any records-27what happens if updating cursor did not fetch any records-23

There are one column in each table, call id, to link them. --For incremental/New data----- insert into A select * from B where column_name NOT IN (select column_name from B); --For Edited Data------- cursore C_AB select * from B minus select * from A For R in C_AB loop Update A set....where ... this shows how I would approach getting the first two columns -- just add the other 2 and use merge to keep filling temp -- and then update the join: [email protected] -1 5 group by urefitem ) b 6 on (temp.urefitem = b.urefitem) 7 when matched then update set amount = b.sum_total 8 when not matched then insert (urefitem,amount) values ( b.urefitem, b.sum_total) 9 / 398 rows merged. using a cursor means you are back to "slow=very_true" you already WERE updating on a bulk basis??? But when I run the following query, it takes up 50% of CPU. tab A has these columns: id, cycle, pop tab B has these columns: id, cycle, site_id,rel_cd,groupid update tab A a set pop= (select count(*) from tab B b where b.id=and a.cycle = b.cycle and b.site_id=44 and b.rel_cd in('code1','code2','code3') and b.groupid='123') where pop is null and id in(select id from tab B); call count cpu elapsed disk query current rows ------- ------ -------- ---------- ---------- ---------- ---------- ---------- Parse 1 0.00 0.00 0 0 0 0 Execute 2 496.35 499.54 7530955 9902630 76532 11444 Fetch 0 0.00 0.00 0 0 0 0 ------- ------ -------- ---------- ---------- ---------- ---------- ---------- total 3 496.35 499.54 7530955 9902630 76532 11444 Misses in library cache during parse: 0 Optimizer goal: CHOOSE Parsing user id: 305 Rows Row Source Operation ------- --------------------------------------------------- 1 UPDATE tab A 11445 MERGE JOIN 5942 VIEW VW_NSO_1 5942 SORT UNIQUE 31227 TABLE ACCESS FULL tab B 17385 SORT JOIN 12601 TABLE ACCESS FULL tab A Now my questions are: 1. We have several such updates that creates the same problems on the server from time to time and I would appreciate some guidance to resolve this.

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