CONTINUE is a new featurebroughtin Oracle 11g, but there is a trap or bug need to pay attention, see the following code scrap:
DECLARECURSOR dept_cur ISSELECT deptno,dname,locFROM scott.dept;TYPE dept_tab IS TABLE OF dept_cur%ROWTYPE INDEX BY BINARY_INTEGER;l_dept_tab dept_tab;BEGIN--EXECUTE IMMEDIATE 'ALTER SESSION SET PLSQL_OPTIMIZE_LEVEL = 1';--http://pbarut.blogspot.com/2009/04/caution-for-loop-and-continue-in-oracle.htmldbms_output.put_line('==========OracleVersion=========');FOR ver_rec IN (SELECT bannerFROM v$version)LOOPdbms_output.put_line(ver_rec.banner);END LOOP;--review test datadbms_output.put_line('==========dept_loop0=========');<<dept_loop0>>FOR dept_rec IN dept_curLOOPdbms_output.put_line(dept_rec.deptno || ', ' || dept_rec.dname || ', ' ||dept_rec.loc);END LOOP dept_loop0;--CONTINUE in implicit cursordbms_output.put_line('==========dept_loop1=========');<<dept_loop1>>FOR dept_rec IN dept_curLOOPIF (dept_rec.deptno = '30')THENcontinue dept_loop1;END IF;dbms_output.put_line(dept_rec.deptno || ', ' || dept_rec.dname || ', ' ||dept_rec.loc);END LOOP dept_loop1;--CONTINUE in explicit cursordbms_output.put_line('==========dept_loop2=========');OPEN dept_cur;FETCH dept_cur BULK COLLECTINTO l_dept_tab;CLOSE dept_cur;<<dept_loop2>>FOR i IN 1 .. l_dept_tab.COUNTLOOPIF (l_dept_tab(i).deptno = '30')THENcontinue dept_loop2;END IF;dbms_output.put_line(l_dept_tab(i).deptno || ', ' || l_dept_tab(i).dname || ', ' || l_dept_tab(i).loc);END LOOP dept_loop2;END;
Output:
==========OracleVersion=========Oracle Database 11g Enterprise Edition Release 11.1.0.7.0 - 64bit ProductionPL/SQL Release 11.1.0.7.0 - ProductionCORE11.1.0.7.0ProductionTNS for Solaris: Version 11.1.0.7.0 - ProductionNLSRTL Version 11.1.0.7.0 - Production==========dept_loop0=========10, ACCOUNTING, NEW YORK20, RESEARCH, DALLAS30, SALES, CHICAGO40, OPERATIONS, BOSTON50, name1, loc151, name1, name152, loc1, loc1==========dept_loop1=========10, ACCOUNTING, NEW YORK20, RESEARCH, DALLAS==========dept_loop2=========10, ACCOUNTING, NEW YORK20, RESEARCH, DALLAS40, OPERATIONS, BOSTON50, name1, loc151, name1, name152, loc1, loc1
As you see, CONTINUE didn't work correctly in implicit cursor loop!!! |