Oracle 10g introduces support for the FORALL
syntax with non-consecutive indexes in collections. The INDICES OF
clause allows the FORALL
syntax to be used with sparse collections, while the VALUE OF
clause is used for collections of indexes pointing to other collections. The following are examples of their usage:
DECLARE TYPE t_tab1 IS TABLE OF tab1%ROWTYPE; TYPE t_tab2 IS TABLE OF BINARY_INTEGER; l_tab1 t_tab1 := t_tab1(); l_tab2 t_tab2 := t_tab2(); BEGIN FOR i IN 1 .. 1000 LOOP l_tab1.extend; l_tab1(l_tab1.last).id := i; IF MOD(i, 100) = 0 THEN l_tab2.extend; l_tab2(l_tab2.last) := i; END IF; END LOOP; l_tab1.delete(301); l_tab1.delete(601); l_tab1.delete(901); -- This would fail due to sparse collection. --FORALL i IN l_tab.first .. l_tab.last -- INSERT INTO tab1 VALUES l_tab(i); -- This works fine with sparse collections. FORALL i IN INDICES OF l_tab1 INSERT INTO tab1 VALUES l_tab1(i); -- This works fine for collections of indexes -- pointing to elements of another collection. FORALL i IN VALUES OF l_tab2 INSERT INTO tab1 VALUES l_tab1(i); END; |
Fonte: http://www.oracle-base.com/articles/10g/PlsqlEnhancements10g.php
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