Question

我目前正在上Oracle SQL类，并且在SAVEPOINT和ROLLBACK方面遇到问题。据说SAVEPOINT和ROLLBACK语句在vs代码中靠近它们的语法无效，而APEX则表示SAVEPOINT语句是未知的。如果我删除代码周围的语句，似乎可以修复错误，但似乎我应该能够在一个文件中完成整个分配。至少那是他们想要的。我的教授似乎也很沮丧，因此我希望你们能为我提供帮助。仅供参考，我在编码和SQL方面还很陌生。这是我的代码：

       /*These statements create indexes*/
       CREATE INDEX CD_NUMBER_TRACK_LISTINGS_IDX
       ON D_TRACK_LISTINGS(CD_NUMBER);

       CREATE UNIQUE INDEX EMAIL_D_CLIENTS_IDX
       ON D_CLIENTS(EMAIL);

       CREATE INDEX TITLE_ARTIST_D_SONGS_IDX
       ON D_SONGS(TITLE,ARTIST);
       /* transaction statements*/
       SAVEPOINT one;
       DELETE TITLE
       FROM D_SONGS
       WHERE TITLE = "All These Years";
       INSERT INTO D_SONGS(ID, TITLE, DURATION, ARTIST, TYPE_CODE)
       VALUES(60, "Happy Birthday Sunshine", "4 min" , "The Sunsets", 88);
       ROLLBACK TO SAVEPOINT one
       COMMIT;

       SAVEPOINT two;
       INSERT INTO D_CDS
       VALUES (100, "Best of Rock and Roll", "Old Town Records", "2004");
       INSERT INTO D_CDS
       VALUES (99, "Party Music", "Old Town Records", "2004");
       INSERT INTO D_CDS
       VALUES (98, "Holiday Tunes for All Ages", "Tunes are Us", "2004");
       INSERT INTO D_CDS
       VALUES (97, "Celebrate the Day", "R and B Inc.", "2003");
       COMMIT;


       SAVEPOINT three;
       UPDATE D_EVENTS
       SET NAME = "Employee Training";
       ROLLBACK TO SAVEPOINT three;
       /* explain statements*/
      EXPLAIN PLAN   
         SET STATEMENT_ID = 'myPlan'  
         FOR  
         SELECT ID, TITLE, DURATION, ARTIST
         FROM D_SONGS
         WHERE EXISTS
            (SELECT DESCRIPTION
            FROM D_TYPES
            WHERE DESCRIPTION = 'Jazz' OR DESCRIPTION = 'Pop');

Answer 1

回滚语句存在问题。

它必须为rollback to <savepoint name>。不需要SAVEPOINT关键字。

您的情况应该是：

ROLLBACK TO three; -- or one or two

干杯！

Oracle SQL SAVEPOINT问题

1 个答案: