Php t您尚未显示该表的大纲架构/数据。请注意，MCVE中的M是最小值。 SELECT data_id, data_val_id, (SELECT EVAL(SELECT select_part FROM fo

t您尚未显示该表的大纲架构/数据。请注意，MCVE中的M是最小值。

SELECT 
    data_id, 
    data_val_id, 
    (SELECT 
          EVAL(SELECT select_part FROM for_select WHERE data_id=sales_data.data_id)
     FROM
          EVAL(SELECT from_part FROM for_select WHERE data_id=sales_data.data_id)
     WHERE
          EVAL(SELECT where_part FROM for_select WHERE data_id=sales_data.data_id)
          AND
          EVAL(SELECT key_column_name FROM for_select WHERE data_id=sales_data.data_id) = sales_data.data_val_id
     ) AS additional_data
FROM
    sales_data