Updating current record oracle


09-Jan-2018 16:01

Example Syntax: DECLARE TYPE TAB_TEST IS TABLE OF TEST%ROWTYPE; L_TAB_TEST TAB_TEST; CURSOR C1 IS SELECT * FROM TEST; BEGIN OPEN C1; FETCH C1 BULK COLLECT INTO L_TAB_TEST; CLOSE C1 ; FOR I IN L_TAB_TEST.

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WHERE CURRENT OF & FOR UPDATE The WHERE CURRENT OF clause is used in some UPDATE and DELETE statements.

The WHERE CURRENT OF clause in an UPDATE or DELETE statement states that the most recent row fetched from the table should be updated or deleted.

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So opening a cursor with the "for update skip locked" clause doesn't lock a single row.

statement can be accomplished in one of two ways, primarily depending upon which version of SQL Server you are using.

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Inside a cursor loop, WHERE CURRENT OF allows the current row to be directly updated.CREATE or REPLACE TRIGGER emp_after_update AFTER UPDATE OF empid ON emp FOR EACH ROW DECLARE BEGIN update emp_backup set empid = :new.empid where empid = :old.empid; DBMS_OUTPUT.



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