Question

我更新了UPSERT_DELETE_JOB_COUNTERS。现在我认为＆＃34; upsert＆＃34;使用新的Query =）或者你怎么看？

的问候，彼得

`private static final String UPSERT_DELETE_JOB_COUNTERS =
        "UPDATE rating.delete_job_counters SET delete_count = delete_count + ? WHERE fee_group_id = ? AND delete_job_id = ?; "+
        "INSERT INTO  rating.delete_job_counters(delete_job_id, fee_group_id, delete_count ) "+
        "SELECT ?, ? , ? " +
        "WHERE NOT EXISTS (SELECT 1 FROM rating.delete_job_counters  WHERE fee_group_id = ? AND delete_job_id = ?); ";

@Override
public Boolean insertIntoDeleteStatistic(final CachedRowSet deletedEntries,
                                      Long deleteJobId,
                                      Transaction transaction) throws SQLException {
    boolean finish = true;
    if (deletedEntries.size() == 0) {
        return finish;
    }
    final Connection connection = transaction.getConnection();
    final Timer executeTimer = Timer.start("Insert took ");
    try {
        PreparedStatement pstmt = connection.prepareStatement(UPSERT_DELETE_JOB_COUNTERS);
        while (deletedEntries.next()) {
            pstmt.setInt(1, deletedEntries.getInt(2));
            pstmt.setInt(2, deletedEntries.getInt(1));
            pstmt.setLong(3, deleteJobId);
            pstmt.setLong(4, deleteJobId);
            pstmt.setInt(5, deletedEntries.getInt(1));
            pstmt.setInt(6, deletedEntries.getInt(2));
            pstmt.setInt(7, deletedEntries.getInt(1));
            pstmt.setInt(8, deletedEntries.getInt(2));
            pstmt.execute();
        }...

`

Answer 1

您不能将参数化java.sql.PreparedStatement与DO语句一起使用。

为什么不使用INSERT ... ON CONFLICT DO UPDATE（从PostgreSQL 9.5开始提供）？

对于旧版本的PostgreSQL，您可能需要像这个伪代码样本一样编写“无限循环”：

while (1) {
   INSERT ...
   if (insert went ok) break;
   UPDATE ...
   if (update changed one row) break;
}

列索引超出范围：1，列数：0

1 个答案: