无法在 Netezza 上执行 executeBatch() - JDBC

Posted 2023-05-08

【中文标题】无法在 Netezza 上执行 executeBatch() - JDBC

【英文标题】：Unable to do a executeBatch() on Netezza - JDBC

【发布时间】：2014-01-13 07:59:47

【问题描述】：

当我尝试在 netezza 上执行 executeBatch() 时出现错误。以下是错误：

org.netezza.error.NzSQLException：错误：更新已取消：尝试使用来自多个连接行的值更新目标行..

请看下面的代码：

String updateDim = "UPDATE DIM_DETAILS set c1 = ? where rep_id = 185 and ar_id = ? and pe_id = ? and se_id = ? and by_id = ?";
stmt3 = conn.prepareStatement(updateDim);

         for (Dim dim : updatedDimList )
             upcount += 1;
             opvalue = BeanUtils.getProperty(dim, dimName.toLowerCase());


             stmt3.setString(1, opvalue);
             stmt3.setString(2, dim.getAr_id());
             stmt3.setString(3, dim.getPe_id());
             stmt3.setString(4, dim.getSe_id());
             stmt3.setString(5, dim.getBy_id());
             stmt3.addBatch();
             //stmt3.executeUpdate();
             //System.out.println("Successfully Updated Rows: "+upcount);

         

         int[] recordsAffected = stmt3.executeBatch();

         conn.commit();

【参考方案1】：

您似乎正在尝试多次更新多行，因为可能存在重复的行。请尝试删除此类重复项。

 Set<String> keys = new HashSet<String>();
 //inside the loop
 if(keys.contains(dim.getAr_id() + "#" + dim.getPe_id() + "#" + dim.getCe_id()))
continue;
 else
keys.add(dim.getAr_id() + "#" + dim.getPe_id() + "#" + dim.getCe_id());