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我在mysql中有大量库存数据，格式如下......

  date      symbol    open   high   low    close  volume 
2017-11-07  stockA    8.9    8.92   8.88   8.9     68987
2017-11-08  stockA    8.91   8.95   8.9    8.92    98793
2017-11-09  stockA    8.75   8.88   8.71   8.77    99871
2017-11-07  stockB    18.9   18.92  18.88  18.9    12109
2017-11-08  stockB    18.91  18.95  18.9   18.92   11898
2017-11-09  stockB    18.75  18.88  18.71  18.77   10898
2017-11-07  stockC    3.9    3.92    3.88   3.9    98093
2017-11-08  stockC    3.91   3.95    3.9    3.92  109871 
2017-11-09  stockC    3.75   3.88    3.71   3.77  139405 
...

我正在寻找创建一个表格，将价格类型收集为行，并将数据库中所有股票的类型收集为列：

     date      symbol    open   high   low    close  volume 
    2017-11-07  stockA    8.9    8.92   8.88   8.9     68987
    2017-11-08  stockA    8.91   8.95   8.9    8.92    98793
    2017-11-09  stockA    8.75   8.88   8.71   8.77    99871
    
    2017-11-07  stockB    18.9   18.92  18.88  18.9    12109
    2017-11-08  stockB    18.91  18.95  18.9   18.92   11898
    2017-11-09  stockB    18.75  18.88  18.71  18.77   10898
    
    2017-11-07  stockC    3.9    3.92    3.88   3.9    98093
    2017-11-08  stockC    3.91   3.95    3.9    3.92  109871 
    2017-11-09  stockC    3.75   3.88    3.71   3.77  139405 
    ...
date          type    stockA    stockB   stockC stockD ...
 2017-11-07   open      8.9     18.9     3.9     
 2017-11-08   open      8.92    18.92    3.92
 2017-11-09   open      8.77    18.77    3.77
 2017-11-07   high      8.9     18.92    3.92     
 2017-11-08   high      8.95    18.95    3.95
 2017-11-09   high      8.88    18.88    3.88
 2017-11-07   low       8.88    18.88    3.88     
 2017-11-08   low       8.9     18.9     3.9 
 2017-11-09   low       8.71    18.71    3.71
 2017-11-07   close     8.9     18.9     3.9     
 2017-11-08   close     8.92    18.92    3.92 
 2017-11-09   close     8.77    18.77    3.77

我是 mysql/sql 语法的新手……所以我完全不知道我该如何去做……有没有人做过类似的事情？

感谢所有的链接等。阅读链接后，我尝试使用以下脚本解决问题...不知何故，它引发了 SQL 语法错误（错误代码：1064）。看起来脚本在对前 2 只股票进行排序后停止了，然后出现了不匹配的符号......

SET @sql = NULL;
SELECT 
  GROUP_CONCAT( DISTINCT 
      CONCAT(
        'MAX( if( symbol="',
          symbol,
          '" , open, NULL )) as "',
           symbol, '"' 
         )
      ) INTO @sql
FROM prices ;

SET @sql = CONCAT(' SELECT date, ', @sql, '
          FROM prices');
PREPARE stmt from @sql ;
EXECUTE stmt;
DEALLOCATE PREPARE stmt;

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