Question

我在将数据透视表查询导出到“ .csv”时遇到问题。该查询工作正常，但是当我尝试导出它时出现错误。

这是我的PHP导出代码：

<?php

if(isset($_POST["export"]))
{
  $connect = mysqli_connect("localhost", "root", "", "borok");
  header('Content-Type: text/csv; charset=utf-8');
  header('Content-Disposition: attachment; filename=borok.csv');
  $output = fopen("php://output", "w");
  fputcsv($output, array('user_id', 'wine_id', 'pontszam'));
  $query = "SELECT
GROUP_CONCAT(DISTINCT
  CONCAT(
    'ifnull(SUM(case when wine_id = ''',
    wine_id,
    ''' then pontszam end),0) AS `',
    wine_id, '`'
  )
) INTO @sql
 FROM
  ertekel;
  SET @sql = CONCAT('SELECT user_id, ', @sql, ' 
              FROM ertekel 
               GROUP BY user_id');

 PREPARE stmt FROM @sql;
 EXECUTE stmt;
 DEALLOCATE PREPARE stmt;";
  $result = mysqli_query($connect, $query);
  while($row = mysqli_fetch_assoc($result))
  {
    fputcsv($output, $row);
  }
  fclose($output);
  }

我想要这样的导出表：

|                |   wine_id1        |   wine_id2            |   wine_id3       |
-----------------------------------------------------------------------------
|    user_id1    |       78          |       0               |       77          |
|    user_id2    |       0           |       11              |       81          |
|    user_id3    |       44          |       66              |       66          |
-----------------------------------------------------------------------------

当我尝试导出表时，出现此错误：

您的SQL语法有错误；检查与您的MariaDB服务器版本相对应的手册以获取在'SET @sql = CONCAT（'SELECT user_id'@sql'FROM ertekel

我该怎么办？

如何使用按钮将数据透视表导出到.csv

0 个答案: