Question

朋友我正在使用合并语法更新并在表中插入值

MERGE INTO iq_dnr b
   USING (SELECT *
            FROM iq_dnr
           WHERE co_series = 'IO' AND CATEGORY = 9 AND dnr_from = 13567362) a
   ON (    a.co_series = b.co_series
       AND a.CATEGORY = b.CATEGORY
       AND a.dnr_from = b.dnr_from)
   WHEN MATCHED THEN
      UPDATE
         SET b.dnr_to = 0001
   WHEN NOT MATCHED THEN
      INSERT (co_series, CATEGORY, dnr_from, dnr_to)
      VALUES ('IO', 9, 13567362, 00001)

我想询问是否可以像在上面的查询中一样检查并插入一个表中。知道问题是我能够成功更新表但我无法插入值。 plss帮帮我

Answer 1

尝试使用DUAL，它可能会解决您的问题：

MERGE INTO iq_dnr b
   USING (SELECT 'IO' co_series,
                  9 CATEGORY,
                  13567362 dnr_from
            FROM dual) a
   ON (    a.co_series = b.co_series
       AND a.CATEGORY = b.CATEGORY
       AND a.dnr_from = b.dnr_from)
   WHEN MATCHED THEN
      UPDATE
         SET b.dnr_to = 0001
   WHEN NOT MATCHED THEN
      INSERT (co_series, CATEGORY, dnr_from, dnr_to)
      VALUES ('IO', 9, 13567362, 00001)

使用上面的DUAL可以确保它返回一些能让MERGE语句保持工作的东西......

合并错误（无法插入值）

1 个答案: