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oracle Óαê

1.       Óαê: ÈÝÆ÷£¬´æ´¢SQLÓï¾äÓ°ÏìÐÐÊý¡£
2.       ÓαêÀàÐÍ: ÒþʽÓα꣬ÏÔʾÓα꣬REFÓαꡣÆäÖУ¬ÒþʽÓαêºÍÏÔʾÓαêÊôÓÚ¾²Ì¬Óα꣨ÔËÐÐǰ½«ÓαêÓëSQLÓï¾ä¹ØÁª£©,REFÓαêÊôÓÚ¶¯Ì¬Óαê(ÔËÐÐʱ½«ÓαêÓëSQLÓï¾ä¹ØÁª)¡£
3.       ÒþʽÓαê: DMLÓï¾ä¶ÔÓ¦µÄÓα꣬ÓÉOracle×Ô¶¯¹ÜÀí£¬Ò²³ÆSQLÓαꡣ£¨ËùÓеÄDML²Ù×÷¶¼±»OracleÄÚ²¿½âÎöΪһ¸öcursorÃûΪSQLµÄÒþʽÓα꣩
--      ÒþʽÓαêµÄÊôÐÔÓУº
--     %FOUND – SQL Óï¾äÓ°ÏìÁËÒ»Ðлò¶àÐÐʱΪ TRUE
--    %NOTFOUND – SQL Óï¾äûÓÐÓ°ÏìÈκÎÐÐʱΪTRUE
--    %ROWCOUNT – SQL Óï¾äÓ°ÏìµÄÐÐÊý
--    %ISOPEN - ÓαêÊÇ·ñ´ò¿ª£¬Ê¼ÖÕΪFALSE
declare aid a.name%type:='liaomin';  --a.name¼´±íaµÄname×Ö¶Î ÕâÑù¶¨Òå¿ÉÒÔ²»ÐèÒªÖªµÀÀàÐÍ
begin
    update a set name='liaomin1' where name=aid;
    --ÒþʽÓαêÔÚÖ´ÐÐÉÏÃæÓï¾ä¾ÍÒѾ­Í£Ö¹ ËùÓÐÕâÀïÊDz»ÖªµÀÊÇ·ñ´ò¿ªµÄ
    if(SQL%isopen) then
        dbms_output.put_line('´ò¿ªÓαê');
    end if;
    --ÒþÊ¿ÓαêµÄÐÅÏ¢¶¼ÔÚSQL±äÁ¿ÖÐ Èç¹ûupdateµÄÊý¾ÝÓжàÌõ¼Ç¼ SQL¾ÍÖ¸Ïò×îºóÒ»Ìõ
    if(SQL%notfound) then
        dbms_output.put_line('ûÓÐ');
    end if;
    if(SQL%found) then
        dbms_output.put_line('ÕÒµ½');
    end if;
end;
ÏÔʾÓαê²Ù×÷:
                  (1)ÉùÃ÷Óα꣨¹ØÁªSQLÓï¾ä£©    cursor+ÓαêÃû is/as sqlÓï¾ä
                  (2)´ò¿ªÓαִ꣨ÐÐSQLÓï¾ä£¬Ìî³äÓα꣩    open+ÓαêÃû
                 


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