可以批量插入HANA吗？

Question

我想通过批量插入到hana中。目前我使用Java从结果集中逐行插入。是否有一种方法可以一次插入多行？有可能吗？ （我不想只进口批量插入）我搜遍了，找不到任何好的答案。任何帮助表示赞赏？

Answer 1

对于JAVA/JDBC代码，存在所谓的批处理接口。 下面是我用于测试的老例子：

myDBconn.setAutoCommit(false); 

PreparedStatement insStmt = myDBconn 
     .prepareStatement("INSERT INTO EFASHION.SHOP_FACTS_INS_DEMO VALUES" 
       + " (?, ?, ?, ?, ?, ?, ?, ? )"); 

for (int i = 1; i <= LOOPCNT; i++) { 
    myfacts.createNewFact(); // create a JAVA object with new data 

    // prepare the new data for the batch 
    // note that this is a typed assignment. 
    insStmt.setInt(1, i); 
    insStmt.setInt(2, myfacts.article_id); 
    insStmt.setInt(3, myfacts.color_code); 
    insStmt.setInt(4, myfacts.week_id); 
    insStmt.setInt(5, myfacts.shop_id); 
    insStmt.setDouble(6, myfacts.margin); 
    insStmt.setDouble(7, myfacts.amount_sold); 
    insStmt.setInt(8, myfacts.quantity_sold); 

    // add the new data to the batch 
    insStmt.addBatch(); 

    // limit the batch size, to prevent client side out of memory errors. 
    // but DON'T commit yet! 
    // Remember the data in the current batch is kept in client 
    // memory as long as we don't send it to the HANA server 
    if (i % BATCHSIZE == 0) { 
     // executeBatch returns the number of affected rows. 
     // if we want to use this in the application we just keep adding this up 
     affectedRows += insStmt.executeBatch(); 
    } 
} 
// the final batch execution for whatever remained in the 
// last batch 
affectedRows += insStmt.executeBatch(); 

// finally commit 
myDBconn.commit(); 

所有这一切在JDBC实况文件记录，以便它不应该是遵循这一问题。

备注：ARRAY数据类型不支持（无论单准备好的发言，也不是批） - 只是这是你想要做什么情况下...