Question

"MERGE INTO NT_PROPERTY ntProp USING ( "  +
                            "SELECT * FROM NT_PROPERTY ) " +
                            "VALUES " +
                                    "('minDPTObjectId'," + minDPTObjectId + ", 'Starting DPT Object Id') " +
                                    "('maxDPTObjectId', " + maxDPTObjectId + ", 'Ending DPT Object Id') " +
                            "vt (NAME, VALUE, NOTE) " +
                            "ON ( ntProp.NAME = vt.NAME ) " +
                            "WHEN MATCHED THEN " +
                            "UPDATE SET VALUE = vt.VALUE "+
                            "WHEN NOT MATCHED THEN " +
                            "INSERT (NAME, VALUE, NOTE) VALUES (vt.NAME, vt.VALUE, vt.NOTE)";

好吧，我收到了一个缺少ON关键字的错误，并且根本没有任何线索，还有其他方法可以让它不那么笨拙

非常感谢帮助。

Answer 1

问题是您的MERGE语法不正确。您的陈述采用以下形式：

MERGE INTO nt_property ntprop
  USING (SELECT * FROM nt_property)
    VALUES (...)
    vt (...)
  ON (ntprop.name = vt.name)
WHEN MATCHED THEN
  UPDATE ...
WHEN NOT MATCHED THEN
  INSERT ...;

但它应该是以下形式：

MERGE INTO target_table tgt_alias
  USING source_table_or_subquery src_alias
    ON (<JOIN conditions>)
WHEN MATCHED THEN
  UPDATE ...
WHEN NOT MATCHED THEN
  INSERT ...;

为什么VALUES和vt条款之间有using和on条款？那是不正确的语法。此外，虽然您可以在select * from tablename子句中使用using，但您可以直接使用表名，因为您选择了所有列和所有行。

Answer 2

  MERGE INTO NT_PROPERTY D  
      USING (SELECT * FROM DUAL ) S  
      ON (D.NAME = 'minDPTObjectId')  
      WHEN MATCHED THEN UPDATE SET D.VALUE =   '1234' 
      WHEN NOT MATCHED THEN INSERT (NAME, VALUE, NOTE) 
      VALUES ('maxDPTObjectId', '1111', 'Ending DPT Object Id') ;

SQL MERGE将值更新或插入到同一个表中

2 个答案: